Renault Clio Workshop Repair Manual
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Renault Clio Workshop Repair Manual

Automatic transmission
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See also: Handbook , Owner's Manual
Workshop repair manual
AUTOMATIC TRANSMISSION
Type
MB1
MB3
MJ1
MJ3
ML1
Cancels and replaces Workshop Manual M.R. T.A.M., Part Number : 77 11 088 275
77 11 193 528
"The repair methods given by the manufacturer in this
document are based on the technical specifications
current when it was prepared.
The methods may be modified as a result of changes
introduced by the manufacturer in the production of
the various component units and accessories from which
his vehicles are constructed."
Range
Renault 5
Extra
Renault 9/11
Renault 19
Clio
Twingo
Renault 5
Renault 9/11
Renault 19
Renault 18
Renault Fuego
Renault 18
Renault Fuego
Renault 20
Renault 21
Renault 25
Renault Trafic
And N.T. N 1275 - 1599 - 1769 - 1770 - 2061
C
RENAULT 1997
All copyrights reserved by Renault.
Copying or translating, in part or in full, of this
document or use of the service part reference
numbering system is forbidden without the prior
written authority of Renault.
Edition Anglaise

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  • Page 1: Automatic Transmission

    77 11 193 528 Edition Anglaise "The repair methods given by the manufacturer in this All copyrights reserved by Renault. document are based on the technical specifications Copying or translating, in part or in full, of this current when it was prepared.

  • Page 2: Table Of Contents

    Contents Page Page AUTOMATIC TRANSMISSION Diagram 23-1 Fault finding- Introduction 23-132 Using 23-3 Vehicles concerned 23-133 Identification 23-4 Gear change thresholds 23-7 F F F F I I I I C C C C H H H H E E E E N N N N Gear ratios 23-11 General...

  • Page 3: Diagram

    AUTOMATIC TRANSMISSION Diagram This diagram represents an automatic transmission T T T T y y y y p p p p e e e e M M M M B B B B DI2325 23-1...

  • Page 4: Di2328 Automatic Transmission Diagram

    AUTOMATIC TRANSMISSION Diagram This diagram represents an automatic transmission T T T T y y y y p p p p e e e e M M M M J J J J DI2328 23-2...

  • Page 5: Using

    AUTOMATIC TRANSMISSION Using D D D D R R R R I I I I V V V V I I I I N N N N G G G G As the automatic transmission is lubricated under pressure, lubrication only occurs if the engine is running.

  • Page 6: Identification

    AUTOMATIC TRANSMISSION Identification The identification plate indicates: at A the type of automatic transmission, at B the type suffix, at C the fabrication number, at D the manufacturing factory. M M M M B B B B - - - - M M M M J J J J TYPE XXX - XX TYPE XXX XX...
  • Page 7 AUTOMATIC TRANSMISSION Identification Speedo No. of Type of Final drive pressure Computer Vehicle Suffix Step-down gear ratio drive planet A.T. ratio* (in bar number ratio wheels 0.1 bar) L 423 B/C 373 15/58 25/23 21/19 L 426 16/57 29/24 21/19 B 376 16/57 29/24...
  • Page 8 AUTOMATIC TRANSMISSION Identification Step-down gear ratio Speedo No. of Type of pressure Computer Vehicle Suffix Final drive ratio drive planet A.T. Step down Differential step (in bar number ratio wheels mechanisms down 0.1 bar) B 297 9/32 25/23 Elec. B 297 9/32 25/23 7/19...

  • Page 9: Gear Change Thresholds

    AUTOMATIC TRANSMISSION Gear change thresholds B403 - C403 L423 - B373 - C373 (Switzerland) Pedal Pedal position position No load No load Full load Full load (The kickdown switch is integrated into the (The kickdown switch is integrated into the computer).
  • Page 10 AUTOMATIC TRANSMISSION Gear change thresholds L48K - L483 - L489 - L/K 48A B/C 373/573 Pedal Pedal position position No load No load Full load Full load Kickdown (The kickdown switch is integrated into the computer). X X X X 5 5 5 5 7 7 7 7 B B B B / / / / T T T T Pedal Pedal position...
  • Page 11 AUTOMATIC TRANSMISSION Gear change thresholds 1343 - 1353 - 1363 B53B - C53B - L53B Pedal Pedal position position No load No load Full load Full load Kickdown Kickdown 1343 - 1353 - 1363 (Argentina) B537 - C537 - L537 Pedal Pedal position...

  • Page 12: Gear Change Thresholds

    AUTOMATIC TRANSMISSION Gear change thresholds Pedal position No load Full load Kickdown (The kickdown switch is integrated into the computer). The figures in the tables indicate the theoretical average gear change speeds (actual time speed). These figures may vary depending on the ac- cepted tolerance limits on the component units and tyres fitted.

  • Page 13: Gear Ratios

    AUTOMATIC TRANSMISSION Gear ratios For vehicles B53A - C53A - L53A - B537 - C537 - L537 Gear ratio Reverse Gear reduction Gear reduction + stepdown 2.069 1.241 0.828 1.655 Overall reduction 7.999 4.799 3.199 6.399 Speed in km/h per 1000 rpm. * 12.937 21.562 32.343...
  • Page 14 AUTOMATIC TRANSMISSION Gear ratios For vehicles C06 Gear ratio Reverse Gear reduction Gear reduction + stepdown 2.069 1.241 0.827 1.655 Overall reduction Speed in km/h per 1000 rpm. 12.52 20.87 31.31 15.656 Tyres: 155/70 R 13. For vehicles F40 Gear ratio Reverse Gear reduction Gear reduction + stepdown...

  • Page 15: Specifications

    AUTOMATIC TRANSMISSION Specifications R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T I I I I N N N N S S S S T T T T R R R R U U U U C C C C T T T T I I I I O O O O N N N N S S S S •...

  • Page 16: Maintenance

    AUTOMATIC TRANSMISSION Maintenance M M M M B B B B ..M M M M J J J J automatic transmissions have a single oil level and a single oil grade for all sections (converter, final drive, gear section).
  • Page 17 AUTOMATIC TRANSMISSION Maintenance D D D D R R R R A A A A I I I I N N N N - - - - R R R R E E E E F F F F I I I I L L L L L L L L ML, MB and MJ gear sections The oil must be drained when the engine is cold and with dipstick and plugs (A) removed.
  • Page 18 AUTOMATIC TRANSMISSION Maintenance The oil is refilled via the dipstick tube. Fit plug (C). Use a funnel fitted with a 15/100 mesh filter to The oil is refilled through plug (B) and the oil trap any impurities in the oil. should be level with the bottom of the aperture of plug (B).
  • Page 19 AUTOMATIC TRANSMISSION Maintenance C C C C O O O O N N N N F F F F O O O O R R R R M M M M I I I I T T T T Y Y Y Y O O O O F F F F T T T T H H H H E E E E D D D D I I I I P P P P S S S S T T T T I I I I C C C C K K K K I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : in order to ensure that the oil level is correct, you must check the conformity of the dipstick .
  • Page 20 AUTOMATIC TRANSMISSION Maintenance 1344 - 1354 Yellow (1) L = 240 mm Grey (2) L/K 48A (deeper sump) L = 247 mm Red (2) MB3 003 L = 243 mm Yellow (2) MB1 023 L = 334 mm Light grey (2) MB1 033 L = 338 mm C373...
  • Page 21 AUTOMATIC TRANSMISSION Maintenance 88860R 91193R1 23-19...

  • Page 22: Number Of Discs

    AUTOMATIC TRANSMISSION Identification Identification of pistons F1 - F2 DI2331 DI2332 A A A A ..T T T T ..Dimension F1 (x in mm) Dimension F2 (y in mm) 25.7 0.35 62.4 21.8 0.35 58.4...
  • Page 23 AUTOMATIC TRANSMISSION Operation of the transmission O O O O P P P P E E E E R R R R A A A A T T T T I I I I N N N N G G G G C C C C O O O O M M M M P P P P O O O O N N N N E E E E N N N N T T T T S S S S DI2333 A Park wheel 23-21...

  • Page 24: Transmission Operation

    AUTOMATIC TRANSMISSION Operation of the transmission O O O O P P P P E E E E R R R R A A A A T T T T I I I I N N N N G G G G C C C C O O O O M M M M P P P P O O O O N N N N E E E E N N N N T T T T S S S S Lever position 2 2 2 2 n n n n d d d d G G G G E E E E A A A A R R R R H H H H O O O O L L L L D D D D...
  • Page 25 AUTOMATIC TRANSMISSION Cross section and tightening torques (in daN.m) M M M M B B B B A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N 86293-1R * Bolts coated with "...
  • Page 26 AUTOMATIC TRANSMISSION Cross section and tightening torques (in daN.m) M M M M J J J J A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N Differential cover plate: 2 85615R...
  • Page 27 AUTOMATIC TRANSMISSION Cross section and tightening torques(in daN.m) M M M M L L L L A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N DI2334 Gear train housing bolts on spacer housing...
  • Page 28 AUTOMATIC TRANSMISSION Cross section and tightening torques (in daN.m) M M M M L L L L A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N DI2335 * Pre-coated with "...

  • Page 29: Strainer

    AUTOMATIC TRANSMISSION Strainer The strainer filters the oil and ensures that the automatic transmission operates correctly. Tightening torques (in daN.m) Distributor bolt (strainer bolt) Sump bolts R R R R E E E E M M M M O O O O V V V V A A A A L L L L Drain the oil and remove: the sump (for vehicles fitted with M M M M B B B B A A A A U U U U T T T T O O O O - - - -...
  • Page 30 AUTOMATIC TRANSMISSION Strainer Original fitment Second fitment (check assembly direction) M M M M B B B B - - - - M M M M J J J J 88163-2S 88163-5S With sump. With sump and three magnets*. 88162-1S 88162-3S * Direction for fitting magnets: ribbed side against plate.
  • Page 31 AUTOMATIC TRANSMISSION Strainer fitment (except MB1 600/601) Strainer B with D or E N N N N O O O O T T T T E E E E : : : : The deeper type of sump must be fitted with a modified strainer and dipstick (see "Dip- stick conformity"...
  • Page 32 AUTOMATIC TRANSMISSION Strainer As for the following transmissions: • MJ3 761/762/800 and 801 for L483 - L489 - L L L L 4 4 4 4 8 8 8 8 K K K K - - - - L L L L / / / / K K K K 4 4 4 4 8 8 8 8 A A A A C C C C O O O O R R R R R R R R E E E E C C C C T T T T B B B B 2 2 2 2 9 9 9 9 B B B B •...
  • Page 33 AUTOMATIC TRANSMISSION Strainer 88163-3S With its sump and four magnets*. 88162-4S * Direction for fitting magnets: ribbed side against plate 23-31...

  • Page 34: Hydraulic Distributor

    AUTOMATIC TRANSMISSION Hydraulic distributor The hydraulic distributor delivers (or discharges) oil to (or from) the clutches and brakes in accordance with the solenoid valve feed. C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G Tightening torques (in daN.m) Check that the sequence valves (6) and (7) slide Distributor bolts...
  • Page 35 AUTOMATIC TRANSMISSION Hydraulic distributor Original fitment: The stop screw (B) is used to prevent the manually operated valve (14) slipping at the end of its tra- vel. 88168R Adjust stop screw (B): 88163-2R put selector quadrant in "Park", slacken the lock nut and bring screw (B) to wi- After tightening bolts (1) and(2), fit the new strai- thin 1 mm of the manually operated valve, ner (fitting direction shown in diagram) together...

  • Page 36: Hydraulic Distributor

    AUTOMATIC TRANSMISSION Hydraulic distributor R R R R E E E E M M M M O O O O V V V V A A A A L L L L - - - - R R R R E E E E F F F F I I I I T T T T T T T T I I I I N N N N G G G G 85526R Pressure limiting valve ball (VLP) Pressure limiting valve spring (medium size) (VLP)
  • Page 37 AUTOMATIC TRANSMISSION Hydraulic distributor Removal must be performed in a clean, dust-free location. R R R R E E E E M M M M O O O O V V V V A A A A L L L L Remove in succession the 2 bolts securing the cov- er plate (13).
  • Page 38 AUTOMATIC TRANSMISSION Hydraulic distributor H H H H Y Y Y Y D D D D R R R R A A A A U U U U L L L L I I I I C C C C D D D D I I I I S S S S T T T T R R R R I I I I B B B B U U U U T T T T O O O O R R R R P P P P L L L L A A A A T T T T E E E E 3) Perform the following: (Modification) clean the plate,...

  • Page 39: Solenoid Valves

    AUTOMATIC TRANSMISSION Solenoid valves Tightening torques (in daN.m) Distributor bolts Sump bolts Cover plate bolts (retains solenoid valves) R R R R E E E E M M M M O O O O V V V V A A A A L L L L R R R R E E E E F F F F I I I I T T T T T T T T I I I I N N N N G G G G The hydraulic distributor must be removed in or- Lubricate the solenoid valves and fit the solenoid...
  • Page 40 AUTOMATIC TRANSMISSION Speedometer drive shaft seal (MJ - ML) R R R R E E E E P P P P L L L L A A A A C C C C I I I I N N N N G G G G S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 41 AUTOMATIC TRANSMISSION Speedometer drive pinion (MB) R R R R E E E E P P P P L L L L A A A A C C C C I I I I N N N N G G G G Loosen the pinion with a screwdriver and recover C C C C A A A A S S S S E E E E : : : : Only the speedometer drive pinion or...
  • Page 42 AUTOMATIC TRANSMISSION Speedometer drive pinion (J) R R R R E E E E P P P P L L L L A A A A C C C C I I I I N N N N G G G G Depending on the type of vehicle, release or re- move the steering mechanism to gain access to the inspection plate (40).

  • Page 43: Differential Seal (Mb)

    AUTOMATIC TRANSMISSION Differential seal (MB) R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.

  • Page 44: Differential Seal (Mj)

    AUTOMATIC TRANSMISSION Differential seal (MJ) R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 45 AUTOMATIC TRANSMISSION Differential seal and lock nut (ML) R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.

  • Page 46: Converter

    As from 1985, on M M M M B B B B automatic transmissions, the VERTO diameter 216 converter has been replaced by a RENAULT diameter 227 converter. Replacing the torque converter involves: replacing the drive plate, replacing the pump, turbine and stator shafts.
  • Page 47 AUTOMATIC TRANSMISSION Converter N N N N O O O O T T T T E E E E : : : : O O O O N N N N L L L L Y Y Y Y T T T T H H H H E E E E R R R R E E E E C C C C O O O O M M M M M M M M E E E E N N N N D D D D E E E E D D D D O O O O I I I I L L L L M M M M U U U U S S S S T T T T B B B B E E E E U U U U S S S S E E E E D D D D I I I I N N N N T T T T H H H H E E E E T T T T O O O O R R R R Q Q Q Q U U U U E E E E C C C C O O O O N N N N V V V V E E E E R R R R T T T T E E E E R R R R .

  • Page 48: Drive Plate

    AUTOMATIC TRANSMISSION Drive plate A A A A T T T T T T T T E E E E N N N N T T T T I I I I O O O O N N N N : : : : Both the torque converter and the drive plate have a mark on them.
  • Page 49 AUTOMATIC TRANSMISSION Drive plate C C C C H H H H E E E E C C C C K K K K that the locating dowels are present on the engine and starter, Place a support, fitted with a dial gauge, on one that the ignition sensor target on the drive of the cylinder block mounting holes.

  • Page 50: Stator Shaft

    AUTOMATIC TRANSMISSION Stator shaft The stator shaft can be removed from the conver- ter housing. To do this, after opening the final drive housing, remove the bolts (A) and extract the shaft. When refitting, ensure that the paper seal (B) is fitted and that the O-ring (C) is in good condition.

  • Page 51: Converter Seal

    AUTOMATIC TRANSMISSION Converter seal S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 52 AUTOMATIC TRANSMISSION Converter seal S S S S P P P P E E E E C C C C I I I I A A A A L L L L N N N N O O O O T T T T E E E E S S S S Refitting N N N N O O O O T T T T E E E E : : : : depending on when the MB automatic...
  • Page 53 AUTOMATIC TRANSMISSION Converter seal MJ automatic transmission ML automatic transmission Removal Removal When the converter has been removed, remove When the converter has been removed, remove the seal (use a tool without any mould seams so the seal using a chisel or an extracting tool. that the casing bore is not damaged).

  • Page 54: Gear Section Casing

    AUTOMATIC TRANSMISSION Gear section casing N N N N E E E E E E E E D D D D L L L L E E E E T T T T H H H H R R R R U U U U S S S S T T T T R R R R A A A A C C C C E E E E S S S S A A A A N N N N D D D D W W W W A A A A S S S S H H H H E E E E R R R R S S S S Needle thrust race between the drive hub and...
  • Page 55 AUTOMATIC TRANSMISSION Gear section casing S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 56 AUTOMATIC TRANSMISSION Gear section casing Leave spacer (E) and shim (K) on the output shaft. DI2337 the sump, the strainer and retrieve its seal (J), all the distributor bolts except bolt (A). 85744R 85596R1 When removing bolt (A), take care not to let the following drop: 88207R the manually operated valve (MV),...
  • Page 57 AUTOMATIC TRANSMISSION Gear section casing Remove clip (A) and pull on connector (T). the circlip (20) and assembly (17 - 16 - 15 - 13), 85661R Remove: (28) - (27). DI2338 N N N N O O O O T T T T E E E E : : : : to remove the lever (30), put it in 1st gear "hold"...
  • Page 58 AUTOMATIC TRANSMISSION Gear section casing the assembly E1 - E2, (10) using the turbine shaft (39) (assembly (10) cannot be repaired), 85525-2R circlip (9) and from (8 to 5), 86069G the bell housing of E2 (14) and (37-11), DI2360 DI2359 23-56...
  • Page 59 AUTOMATIC TRANSMISSION Gear section casing the cup (4), the piston (3) using tool B. Vi. 952 Mark the face (chamfer A) of the oil pump outer or a locally manufactured tool (see "Special pinion and remove (2). tooling" section). N N N N O O O O T T T T E E E E : : : : on some versions, the faces are reversible.
  • Page 60 AUTOMATIC TRANSMISSION Gear section casing 86470 86496 86497 86469 86497G Blow compressed air into the oil cooler inlet and return pipes (A and B). After cleaning, lubricate the parts immediately with recommended oil. 23-58...
  • Page 61 AUTOMATIC TRANSMISSION Gear section casing C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G D D D D R R R R I I I I V V V V E E E E H H H H U U U U B B B B - - - - S S S S E E E E A A A A L L L L I I I I N N N N G G G G R R R R I I I I N N N N G G G G S S S S ( ( ( ( 5 5 5 5 ) ) ) ) •...
  • Page 62 AUTOMATIC TRANSMISSION Gear section casing B B B B R R R R A A A A K K K K E E E E S S S S ( ( ( ( 7 7 7 7 ) ) ) ) ( ( ( ( 1 1 1 1 3 3 3 3 ) ) ) ) On E1 - E2, check the condition of: •...
  • Page 63 AUTOMATIC TRANSMISSION Gear section casing R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L Y Y Y Y B B B B R R R R A A A A K K K K E E E E F F F F 2 2 2 2 IMPORTANT: there are several different ways of fitting the circlip.
  • Page 64 AUTOMATIC TRANSMISSION Gear section casing A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G B B B B R R R R A A A A K K K K E E E E F F F F 2 2 2 2 C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E O O O O P P P P E E E E R R R R A A A A T T T T I I I I O O O O N N N N This is adjusted using a spacer shim (C) which is Ensure that the piston is working properly by...
  • Page 65 AUTOMATIC TRANSMISSION Gear section casing S S S S T T T T R R R R E E E E N N N N G G G G T T T T H H H H E E E E N N N N E E E E D D D D F F F F O O O O R R R R W W W W A A A A R R R R D D D D G G G G E E E E A A A A R R R R T T T T R R R R A A A A I I I I N N N N O O O O N N N N M M M M B B B B - - - - M M M M J J J J T T T T Y Y Y Y P P P P E E E E A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N There is a strengthened forward gear train with 3 planet wheels as well as an E1 - E2 clutch assembly which can be identified by three roll pins (A) on the forward gear train and a distance of 27 mm between the crown wheel (B) and cup (C) of E1 on E1 - E2.
  • Page 66 AUTOMATIC TRANSMISSION Gear section casing Clip the turbine shaft in the E E E E 1 1 1 1 - - - - E E E E 2 2 2 2 assembly and B B B B R R R R A A A A K K K K E E E E F F F F 1 1 1 1 fit: 88963-1R A - Oil the seals and fit them progressively onto...
  • Page 67 AUTOMATIC TRANSMISSION Gear section casing I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : Circlip (20), part number: C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E O O O O P P P P E E E E R R R R A A A A T T T T I I I I O O O O N N N N 77 04 002...
  • Page 68 AUTOMATIC TRANSMISSION Gear section casing A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G T T T T H H H H E E E E R R R R E E E E V V V V E E E E R R R R S S S S E E E E G G G G E E E E A A A A R R R R T T T T R R R R A A A A I I I I N N N N The aim of the adjustment is to restrict the dis- placement of the reverse gear train by determin- ing the thickness of the plastic shim (19).
  • Page 69 AUTOMATIC TRANSMISSION Gear section casing 2 - On the park wheel (21) Measure the dimension C. 86021R Calculate the thickness E of shim (19). J J J J T T T T = = = = X X X X + + + + C C C C The total clearance is equal to: The thickness of the shim is equal to: E = JT - 0.4 Example:...
  • Page 70 AUTOMATIC TRANSMISSION Gear section casing Fit plastic shim, (19) whose thickness has already R R R R E E E E F F F F I I I I T T T T T T T T I I I I N N N N G G G G been determined and park wheel (21).
  • Page 71 AUTOMATIC TRANSMISSION Gear section casing Fit clip (E) to the sealed connector (T) and connect A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G T T T T H H H H E E E E E E E E N N N N D D D D F F F F L L L L O O O O A A A A T T T T The end float is the operating clearance of the gear section of the automatic transmission.
  • Page 72 AUTOMATIC TRANSMISSION Gear section casing 1 - Gear section casing end 2 - Final drive housing end The park wheel (21) must be fitted correctly (With The shims must be removed and the paper seal in the notch in the plastic washer (19) in place). place.
  • Page 73 AUTOMATIC TRANSMISSION Gear section casing Position the paper seal. 3 - Calculating the thickness of the shim (K). Fit tool B. Vi.715 and measure: The clearance (L) is equal to: the dimension of the tool (H). the dimension (D) measured between the L = G - E spacer (2) and the tool.
  • Page 74 AUTOMATIC TRANSMISSION Gear section casing F F F F I I I I T T T T T T T T I I I I N N N N G G G G T T T T H H H H E E E E G G G G E E E E A A A A R R R R S S S S E E E E C C C C T T T T I I I I O O O O N N N N C C C C A A A A S S S S I I I I N N N N G G G G T T T T O O O O T T T T H H H H E E E E F F F F I I I I N N N N A A A A L L L L D D D D R R R R I I I I V V V V E E E E C C C C A A A A S S S S I I I I N N N N G G G G Refit: the spacer (2) (except on MB).

  • Page 75: Final Drive Assembly (Mb)

    AUTOMATIC TRANSMISSION Final drive assembly (MB) S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 76 AUTOMATIC TRANSMISSION Final drive assembly (MB) On the press: Insert a small bar inside the housing and place it flat against the bearing (R). Place a piece of wood under the differential crown wheel to support it. On the press, apply a load using an extension tube Place a spacer bar (C) between the casing and the and extract the bearing (R).
  • Page 77 AUTOMATIC TRANSMISSION Final drive assembly (MB) Extract the bearing using an extractor (example Stator shaft which can be dismantled: F F F F A A A A C C C C O O O O M M M M U U U U 4 4 4 4 9 9 9 9 Use tool F F F F A A A A C C C C O O O O M M M M U U U U 4 4 4 4 0 0 0 0 - - - - U U U U 5 5 5 5 0 0 0 0 and extract the...
  • Page 78 I I I I D D D D E E E E N N N N T T T T I I I I F F F F I I I I C C C C A A A A T T T T I I I I O O O O N N N N Stator shaft which can be dismantled Stator shaft which cannot be dismantled Assembly with Assembly with Renault diameter 227 converter Verto diameter 216 converter 89263R 89264S Pump shaft length .
  • Page 79 AUTOMATIC TRANSMISSION Final drive assembly (MB) • Differential DI2363 Remove 23 or 37, 38, 39. Clamp the casing (15) in a vice fitted with soft jaws and remove parts 22 to 16. Attach the washers (17) to their respective planet wheels (18). C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E C C C C O O O O M M M M P P P P O O O O N N N N E E E E N N N N T T T T S S S S Check the condition of: the teeth,...
  • Page 80 AUTOMATIC TRANSMISSION Final drive assembly (MB) S S S S E E E E P P P P A A A A R R R R A A A A T T T T O O O O R R R R H H H H O O O O U U U U S S S S I I I I N N N N G G G G DI2347 Remove: Output shaft (13)
  • Page 81 AUTOMATIC TRANSMISSION Final drive assembly (MB) R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L Y Y Y Y T T T T O O O O R R R R Q Q Q Q U U U U E E E E C C C C O O O O N N N N V V V V E E E E R R R R T T T T E E E E R R R R A A A A N N N N D D D D D D D D I I I I F F F F F F F F E E E E R R R R E E E E N N N N T T T T I I I I A A A A L L L L C C C C A A A A S S S S I I I I N N N N G G G G Fitting the differential and its bearings C C C C R R R R O O O O W W W W N N N N W W W W H H H H E E E E E E E E L L L L W W W W I I I I T T T T H H H H O O O O U U U U T T T T S S S S H H H H O O O O U U U U L L L L D D D D E E E E R R R R...
  • Page 82 AUTOMATIC TRANSMISSION Final drive assembly (MB) Press on the bearing, with the press, using a shoul- REASSEMBLY dered bar or sleeve with a diameter of diameter 125 minimum and diameter 128 maximum to press on the outer bearing ring. 86374R2 Differential bearings 86317-1R1 Bearing (26).
  • Page 83 AUTOMATIC TRANSMISSION Final drive assembly (MB) Output bearing shaft (34). Fitting the differential in the casing. N N N N E E E E V V V V E E E E R R R R U U U U S S S S E E E E T T T T H H H H E E E E C C C C O O O O N N N N V V V V E E E E R R R R T T T T E E E E R R R R C C C C A A A A S S S S I I I I N N N N G G G G A A A A S S S S A A A A S S S S U U U U P P P P - - - - In all assemblies where washers (40) are required P P P P O O O O R R R R T T T T (see page 137), place them in front of the spring...
  • Page 84 AUTOMATIC TRANSMISSION Final drive assembly (MB) On the press: Seal (28) is refitted using tool B. Vi. 945 which consists of: Place a wooden block under the crown wheel. a seal protector (A), Ensure that the circlip is the correct thickness a tool used for fitting the seal (B).
  • Page 85 AUTOMATIC TRANSMISSION Final drive assembly (MB) S S S S E E E E P P P P A A A A R R R R A A A A T T T T O O O O R R R R H H H H O O O O U U U U S S S S I I I I N N N N G G G G 86374R4 Shaft bearing bearings (2) and (8) using tool B.
  • Page 86 AUTOMATIC TRANSMISSION Final drive assembly (MB) C C C C O O O O U U U U P P P P L L L L I I I I N N N N G G G G T T T T H H H H E E E E S S S S E E E E P P P P A A A A R R R R A A A A T T T T O O O O R R R R H H H H O O O O U U U U S S S S I I I I N N N N G G G G T T T T O O O O T T T T H H H H E E E E Output shaft (13) C C C C O O O O N N N N V V V V E E E E R R R R T T T T E E E E R R R R A A A A N N N N D D D D D D D D I I I I F F F F F F F F E E E E R R R R E E E E N N N N T T T T I I I I A A A A L L L L C C C C A A A A S S S S I I I I N N N N G G G G On (13), fit pinion (11) aligning the mark on the...
  • Page 87 AUTOMATIC TRANSMISSION Final drive assembly (MB) Lubricate the seal and fit it on the separator hou- sing (14). Tighten the bolts to a torque of 2.5 daN.m. See the relevant section for fitting the converter seal. See the previous chapter for fitting the gear sec- tion casing on the separator housing.

  • Page 88: Final Drive Assembly (Mj)

    AUTOMATIC TRANSMISSION Final drive assembly (MJ) R R R R E E E E M M M M O O O O V V V V A A A A L L L L S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D Mot.
  • Page 89 AUTOMATIC TRANSMISSION Final drive assembly (MJ) 85851R6 the inspection cover (40) and its seal (42), take Extract the bearing (7) and the washer (8) from care not to lose spacers (41), depending on (39). version. Lock the final drive pinion (20) using tool B. Vi. Break off notches (A) on (12) and recover them.
  • Page 90 AUTOMATIC TRANSMISSION Final drive assembly (MJ) Remove: From the final drive casing, remove: the final drive pinion outer bearing track rings the baffle (23), using a copper hammer, the seal (22) using a diameter 41 mm sleeve. the needle race (43) from the output shaft using an extractor such as a F F F F A A A A C C C C O O O O M M M M U U U U 4 4 4 4 0 0 0 0 - - - - U U U U 5 5 5 5 1 1 1 1 B B B B...
  • Page 91 AUTOMATIC TRANSMISSION Final drive assembly (MJ) D D D D I I I I F F F F F F F F E E E E R R R R E E E E N N N N T T T T I I I I A A A A L L L L Differential with 2 planet wheels Remove two of the bolts securing the crown Remove the roll pin holding the planet wheel...
  • Page 92 AUTOMATIC TRANSMISSION Final drive assembly (MJ) Break the band ring (24) with a cold chisel and se- Differential with 4 planet wheels (with band ring) parate the various parts. Break the band ring (24) with a cold chisel and separate the various parts. 85851R3 Differential with 4 planet wheels (with roll pin and band ring)
  • Page 93 AUTOMATIC TRANSMISSION Final drive assembly (MJ) R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L Y Y Y Y Checking the parts Check the condition of: the teeth,...
  • Page 94 AUTOMATIC TRANSMISSION Final drive assembly (MJ) When the bearings are refitted on the press, take the cover plate to the differential casing and care not to change them over since they do not tighten to a torque of 2 daN.m. have the same internal diameter.
  • Page 95 AUTOMATIC TRANSMISSION Final drive assembly (MJ) R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L I I I I N N N N G G G G T T T T H H H H E E E E F F F F I I I I N N N N A A A A L L L L D D D D R R R R I I I I V V V V E E E E P P P P I I I I N N N N I I I I O O O O N N N N Fit tool B.
  • Page 96 AUTOMATIC TRANSMISSION Final drive assembly (MJ) F F F F I I I I N N N N A A A A L L L L D D D D R R R R I I I I V V V V E E E E P P P P I I I I N N N N I I I I O O O O N N N N P P P P R R R R E E E E L L L L O O O O A A A A D D D D The final drive pinion preload is adjusted without the differential in place.
  • Page 97 AUTOMATIC TRANSMISSION Final drive assembly (MJ) Fitting the output shaft (39) 85851R4 In the final drive fit: the needle bearing (43) on the press, the spring ring (15). Place pinion (9) in the final drive (shoulder at con- verter end). At the same time, thread onto the output shaft (39), the step-down gear (9) and the speedometer drive wheel (11) (with the notch towards the con-...
  • Page 98 AUTOMATIC TRANSMISSION Final drive assembly (MJ) Speedometer drive pinion Differential and its seals Fit a new speedometer drive pinion (12) and its These are reassembled when the differential bear- shaft (13). ing and final drive pinion preloads have been ad- justed.
  • Page 99 AUTOMATIC TRANSMISSION Final drive assembly (MJ) Method: - Cover plate end: Fit sleeve C to the sunwheel, fit the seal to the sleeve and position the seal using tool A. Final drive casing end: Proceed in the same way but use tool B to fit the seal.

  • Page 100: Final Drive Assembly (Ml)

    AUTOMATIC TRANSMISSION Final drive assembly (ML) M M M M A A A A T T T T C C C C H H H H I I I I N N N N G G G G P P P P A A A A R R R R T T T T S S S S The final drive pinion and crown wheel.
  • Page 101 AUTOMATIC TRANSMISSION Final drive assembly (ML) S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B.
  • Page 102 AUTOMATIC TRANSMISSION Final drive assembly (ML) S S S S T T T T E E E E P P P P - - - - D D D D O O O O W W W W N N N N C C C C A A A A S S S S I I I I N N N N G G G G Remove: the output shaft and its pinion, Remove:...
  • Page 103 AUTOMATIC TRANSMISSION Final drive assembly (ML) the lip seal (23) using tool B. Vi. 465. Using an extractor, extract the bearing 88208R1 84443S Dismantling the final drive pinion (20) Dismantling the step-down drive shaft (12) Unlock the nut (24) and remove it using B. Vi. 903. Remove parts 12 to 17 (13 and 15 using the press).
  • Page 104 AUTOMATIC TRANSMISSION Final drive assembly (ML) T T T T O O O O R R R R Q Q Q Q U U U U E E E E C C C C O O O O N N N N V V V V E E E E R R R R T T T T E E E E R R R R / / / / F F F F I I I I N N N N A A A A L L L L D D D D R R R R I I I I V V V V E E E E C C C C A A A A S S S S I I I I N N N N G G G G A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G - - - - R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L Y Y Y Y R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L I I I I N N N N G G G G T T T T H H H H E E E E S S S S H H H H A A A A F F F F T T T T S S S S Final drive pinion (20)
  • Page 105 AUTOMATIC TRANSMISSION Final drive assembly (ML) N N N N O O O O T T T T E E E E : : : : check the condition of the O-ring (28) on Output shaft (8) the stator shaft and oil it (see next page). Refitting (see M.R.
  • Page 106 AUTOMATIC TRANSMISSION Final drive assembly (ML) Assemble the casing and the crown wheel using R R R R E E E E A A A A S S S S S S S S E E E E M M M M B B B B L L L L I I I I N N N N G G G G T T T T H H H H E E E E S S S S T T T T E E E E P P P P - - - - D D D D O O O O W W W W N N N N C C C C A A A A S S S S I I I I N N N N G G G G three bolts.
  • Page 107 AUTOMATIC TRANSMISSION Final drive assembly (ML) the needle bearing (7) on the press, fitting di- Before coupling the step-down casing to the mension 37 mm, converter/final drive casing, check that the loca- ting dowel (A) is in position and coat the faces of L L L L o o o o c c c c t t t t i i i i t t t t e e e e F F F F O O O O R R R R M M M M A A A A J J J J O O O O I I I I N N N N T T T T the casings with "...
  • Page 108 AUTOMATIC TRANSMISSION Final drive assembly (ML) the bearing (10) using tool B. Vi. 947, A A A A T T T T T T T T E E E E N N N N T T T T I I I I O O O O N N N N : : : : all bolts mounting the separator the bearing (2) inserting a piece of strap-iron housing must be coated with "Loctite...

  • Page 109: Exploded View

    AUTOMATIC TRANSMISSION Exploded view D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N Mechanism housing End float adjusting shim Oil pump...
  • Page 110 AUTOMATIC TRANSMISSION Exploded view D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N Circlip Ball bearing Step-down gear on secondary shaft Roller bearing Secondary shaft Torque converter and differential casing...
  • Page 111 AUTOMATIC TRANSMISSION Exploded view - gear mechanisms D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N 85525R1 23-109...
  • Page 112 AUTOMATIC TRANSMISSION Exploded view - final drive (MJ) D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N 85525R2 * Parts not on a differential with two planet wheels.
  • Page 113 AUTOMATIC TRANSMISSION Exploded view - final drive (MB) D D D D I I I I A A A A G G G G R R R R A A A A M M M M N N N N 86374-1R6 23-111...

  • Page 114: Computer And Wiring

    AUTOMATIC TRANSMISSION Computer and wiring Original fitment (XR fiche N 1) 85651-1R3 Vehicle speed sensor Fault warning light Load potentiometer Fault warning light connector and XR25 9 and 14 Solenoid pilot valves connection 4 and 7 Six track connector 10 and 11 Load potentiometer connector Multifunction switch Computer 6 and 12...
  • Page 115 AUTOMATIC TRANSMISSION Computer and wiring fitment (XR fiche N 24) 85651-1R4 Vehicle speed sensor Fault warning light connector 9 and 14 Load potentiometer Fault warning light connector and XR25 Solenoid pilot valves connection 4 and 7 Six track connector 10 and 11 Load potentiometer connector Multifunction switch Computer 6 and 12...
  • Page 116 AUTOMATIC TRANSMISSION Computer and wiring fitment (XR fiche N 26) 85651-2R1 Vehicle speed sensor Fault warning light Connection between injection compu- 9A and 14A Fault warning light connector and dia- ter and automatic transmission gnostic socket Solenoid pilot valves 10 and 11 Intercomputer connector Six track connector Computer 4 and 7...
  • Page 117 AUTOMATIC TRANSMISSION Computer and wiring To install these computers on these vehicles, the Wiring modification after replacing MB1 automa- tic transmission connection wiring (1) has to be separated from the computer and the existing wiring on the A modification to the wiring on L42, B57, C37 vehicle used.

  • Page 118: Kickdown

    AUTOMATIC TRANSMISSION Kickdown C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G Located at the end of the accelerator pedal travel, this earths a circuit of the computer which, in cer- tain cases, changes down to a lower gear.

  • Page 119: Computer

    AUTOMATIC TRANSMISSION Computer R R R R E E E E M M M M O O O O V V V V A A A A L L L L - - - - R R R R E E E E F F F F I I I I T T T T T T T T I I I I N N N N G G G G The computer controls the earthing of the sole- noid pilot valve as a function of the peripheral in- formation and checks that all the electrical com-...
  • Page 120 AUTOMATIC TRANSMISSION Computer R R R R E E E E F F F F I I I I T T T T T T T T I I I I N N N N G G G G Check for the presence of the O-rings (T) on the speed sensor and the multifunction switch.

  • Page 121: Multifunction Switch

    AUTOMATIC TRANSMISSION Multifunction switch R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T Computer side strip back 65 mm of protective sleeve, This operation consists of cutting the wire con-...
  • Page 122 AUTOMATIC TRANSMISSION Multifunction switch When refitting the wires in the connector ensure F F F F I I I I T T T T T T T T I I I I N N N N G G G G the same colours wires are connected opposite each other.

  • Page 123: Multifunction Switch

    AUTOMATIC TRANSMISSION Multifunction switch b) Replacing a multifunction switch with earth wire. There is no earth wire (E) on the computer feed connector. REMEMBER TO REFIT THE EARTH WIRE ON THE AUTOMATIC TRANSMISSION HOUSING (see page 23-119 ) IN BOTH CASES (G). O O O O P P P P E E E E R R R R A A A A T T T T I I I I N N N N G G G G D D D D I I I I A A A A G G G G R R R R A A A A M M M M O O O O F F F F T T T T H H H H E E E E M M M M U U U U L L L L T T T T I I I I F F F F U U U U N N N N C C C C T T T T I I I I O O O O N N N N S S S S W W W W I I I I T T T T C C C C H H H H 91617R...

  • Page 124: Speed Sensor

    AUTOMATIC TRANSMISSION Speed sensor R R R R E E E E P P P P L L L L A A A A C C C C E E E E M M M M E E E E N N N N T T T T strip both wires by 5 mm, put a seal on each wire, This operation consists of cutting the wire linking...

  • Page 125: Speed Sensor

    AUTOMATIC TRANSMISSION Speed sensor Before refitting, check for the presence of the O- ring (T). 85651-2R2 23-123...

  • Page 126: Oil Pressure

    AUTOMATIC TRANSMISSION Oil pressure Setting the oil pressure correctly ensures good quality gear changes and increases the life length of the automatic transmission (mechanism part). S S S S P P P P E E E E C C C C I I I I A A A A L L L L T T T T O O O O O O O O L L L L I I I I N N N N G G G G R R R R E E E E Q Q Q Q U U U U I I I I R R R R E E E E D D D D B B B B .
  • Page 127 AUTOMATIC TRANSMISSION Oil pressure A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G A tool can be made to make this operation easier.

  • Page 128: Vacuum Capsule

    AUTOMATIC TRANSMISSION Vacuum capsule The vacuum capsule modulates the oil pressure as a function of engine load. C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G R R R R E E E E M M M M O O O O V V V V A A A A L L L L Engine switched off.

  • Page 129: Special Tooling

    AUTOMATIC TRANSMISSION Special tooling Methods Part Illustration Description reference number B. Vi. 28-01 00 01 227 301 Extractor with interchangeable jaws 71625S1 68997-1S1 Set of 3 drifts for fitting 5 mm roll pins. B. Vi. 31-01 00 01 259 401 Drift for fitting 4 and 10 mm roll pins.
  • Page 130 AUTOMATIC TRANSMISSION Special tooling Methods Part Illustration Description reference number B. Vi. 883 00 00 088 300 Tool for fitting differential band ring. 84912S1 B. Vi. 902-01 00 00 090 201 Tool for fitting circlips 84519-1S B. Vi. 903 00 00 090 300 Ring spanner for final drive pinion nut 84819S1 Tool for replacing speedometer drive shaft...
  • Page 131 AUTOMATIC TRANSMISSION Special tooling Methods Part Illustration Description reference number Tool for fitting differential seal B. Vi. 951 00 00 095 100 86104-1S B. Vi. 952 Locally made tool in accordance with drawing on page 23-131 Tool for measuring the preload in the final B.
  • Page 132 AUTOMATIC TRANSMISSION Special tooling Methods Part Illustration Description reference number Mot. 587 00 00 058 700 Tool for extracting seals. 77669S1 23-130...
  • Page 133 AUTOMATIC TRANSMISSION Special tooling B. Vi. 715 11939R B. Vi. 952 11938R 23-131...

  • Page 134: Fault Finding- Introduction

    AUTOMATIC TRANSMISSION Fault finding - Introduction H H H H O O O O W W W W T T T T O O O O U U U U S S S S E E E E T T T T H H H H E E E E D D D D O O O O C C C C U U U U M M M M E E E E N N N N T T T T 2 2 2 2 n n n n d d d d P P P P A A A A R R R R T T T T : : : : T T T T .
  • Page 135 AUTOMATIC TRANSMISSION Vehicles involved The following table will give you the number of the fault finding fiche to use as a function of: the vehicle type, the engine type, the automatic transmission type, the "old generation" computer reference, the "new generation" computer refe- rence.

  • Page 136: Vehicles Concerned

    AUTOMATIC TRANSMISSION Vehicles concerned 23-134...
  • Page 137 AUTOMATIC TRANSMISSION Vehicles concerned 23-135...
  • Page 138 AUTOMATIC TRANSMISSION Vehicles concerned 23-136...

  • Page 139: General

    AUTOMATIC TRANSMISSION Fiche n 1 General T T T T H H H H I I I I S S S S P P P P A A A A R R R R T T T T D D D D E E E E A A A A L L L L S S S S W W W W I I I I T T T T H H H H V V V V E E E E H H H H I I I I C C C C L L L L E E E E S S S S F F F F I I I I T T T T T T T T E E E E D D D D A A A A S S S S S S S S T T T T A A A A N N N N D D D D A A A A R R R R D D D D W W W W I I I I T T T T H H H H A A A A N N N N "...
  • Page 140 AUTOMATIC TRANSMISSION Fiche n 1 General E E E E S S S S T T T T A A A A B B B B L L L L I I I I S S S S H H H H I I I I N N N N G G G G T T T T H H H H E E E E C C C C O O O O N N N N N N N N E E E E C C C C T T T T I I I I O O O O N N N N B B B B E E E E T T T T W W W W E E E E E E E E N N N N T T T T H H H H E E E E C C C C O O O O M M M M P P P P U U U U T T T T E E E E R R R R A A A A N N N N D D D D T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 In order to be able to make the connection bet- ween the computer and the XR25, you must have...
  • Page 141 AUTOMATIC TRANSMISSION Fiche n 1 General U U U U S S S S I I I I N N N N G G G G T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 The XR25 is essential for all faults on the automa- tic transmission, regardless of the origin of the problems.

  • Page 142: Xr25 Fiche

    AUTOMATIC TRANSMISSION Fiche n 1 XR25 fiche FI21601 - Bargraphs on a red background represent a fault. - Bargraphs on a white background represent a status. 23-140...

  • Page 143: Meaning Of The Bargraphs

    AUTOMATIC TRANSMISSION Fiche n 1 Meaning of the bargraphs D D D D I I I I S S S S P P P P L L L L A A A A Y Y Y Y a a a a n n n n d d d d M M M M E E E E A A A A N N N N I I I I N N N N G G G G O O O O F F F F T T T T H H H H E E E E B B B B A A A A R R R R G G G G R R R R A A A A P P P P H H H H S S S S I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : The information given below is only valid for computers found in the "Vehicles involved"...
  • Page 144 AUTOMATIC TRANSMISSION Fiche n 1 Meaning of the bargraphs T T T T E E E E S S S S T T T T N N N N Engine off, ignition on Bargraphs 4 and 5 represent the position of the gear selector lever as a function of the information supplied by the multifunction switch.

  • Page 145: Adjusting The Load Potentiometer

    AUTOMATIC TRANSMISSION Fiche n 1 Adjusting the load potentiometer Connect connector (L) of the adaptor lead (18) to connector (10) of the load potentiometer. Do not enter the automatic transmission code. On the keypad enter: Adjustments are performed at full load. On the upper part of the bargraphs: - the bargraph located in the left hand column is moving...

  • Page 146: Fault Finding Using Bargraph Illumination

    AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination FAULT FINDING CHART TO BE USED FROM THE BARGRAPHS Page ONE OF THE BARGRAPH INDICATES A FAULT Bargraph 0 RH extinguished or lack of communication with the computer Bargraph 1 RH illuminated: Solenoid valve faults Bargraph 2 RH illuminated: Faults on vehicle speed information Bargraph 3 RH illuminated: Load potentiometer fault Bargraphs 4/5 RH illuminated: Coherence fault between the lever position...
  • Page 147 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination BARGRAPH 0 RH EXTINGUISHED OR NO COMMUNICATION WITH THE COMPUTER Check that the battery voltage is > 10.5 V. Check that the fuse of the automatic Success transmission is not blown. After these checks, does the fault persist? Check the 2 track connector connecting the diagnostic socket and the computer is...
  • Page 148 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination Fault on solenoid pilot valve(s). BARGRAPH 1 RH ILLUMINATED: This solenoid pilot valve fault may be stored due to the drop in supply voltage (5 volts) of the load potentiometer supplied by the automatic transmission computer. In the event of a short circuit between tracks B and C of the load potentiometer, the 1st fault considered by the computer will be a solenoid valve fault.
  • Page 149 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination BARGRAPH 2 RH ILLUMINATED: Fault on vehicle speed information After a road test, if the warning light is still illuminated without having turned off the ignition, replace the vehicle speed sensor. Refer to the replacing instructions in MR T.A.M.. If the fault persists, replace the computer.
  • Page 150 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination BARGRAPH 3 RH ILLUMINATED: Load potentiometer fault Check that the potentiometer is correctly connected to the harness and check the condition of the wiring. Check the 5 volt feed to the potentiometer: Is there a voltage of 4.5 0.5 volts on track B of the potentiometer connector (C on the Trafic)? Replace the computer if the wiring between...
  • Page 151 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination Coherence fault between BARGRAPH 4/5 RH ILLUMINATED: the lever position and the XR25 display. Ignition off, disconnect the 6 track connector from the computer. Is track C on the wiring side isolated from earth? Check the insulation of the line between the starter motor relay and track C of the automatic transmission computer connector and the insulation of the line...
  • Page 152 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination Operating check of the BARGRAPH 6 RH ILLUMINATED: kickdown switch (for vehicles with kickdown) or starting authorisation check in P/N for vehicles without kickdown. V V V V E E E E H H H H I I I I C C C C L L L L E E E E S S S S F F F F I I I I T T T T T T T T E E E E D D D D W W W W I I I I T T T T H H H H A A A A K K K K I I I I C C C C K K K K D D D D O O O O W W W W N N N N S S S S W W W W I I I I T T T T C C C C H H H H A) Bargraph 6 illuminated on RH at no load Vehicles with open contact kickdown switch: No earth on track D of the computer.
  • Page 153 AUTOMATIC TRANSMISSION Fiche n 1 Fault finding using bargraph illumination Operating check BARGRAPH 6 RH ILLUMINATED (cont): of the kickdown switch (for vehicles with kickdown) or starting authorisation check in P/N for vehicles without kickdown. B) Bargraph 6 extinguished in the Full Load position Vehicles with open contact kickdown switch: Earth still present on track D of the computer.
  • Page 154 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 T T T T H H H H E E E E T T T T E E E E S S S S T T T T K K K K I I I I T T T T B B B B ..V V V V i i i i ..9 9 9 9 5 5 5 5 8 8 8 8 O O O O N N N N L L L L Y Y Y Y D D D D E E E E T T T T E E E E C C C C T T T T S S S S F F F F A A A A U U U U L L L L T T T T S S S S O O O O F F F F E E E E L L L L E E E E C C C C T T T T R R R R I I I I C C C C A A A A L L L L O O O O R R R R E E E E L L L L E E E E C C C C T T T T R R R R O O O O N N N N I I I I C C C C O O O O R R R R I I I I G G G G I I I I N N N N 86424R + FEED TO...
  • Page 155 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 D D D D E E E E S S S S C C C C R R R R I I I I P P P P T T T T I I I I O O O O N N N N O O O O F F F F T T T T H H H H E E E E K K K K I I I I T T T T Z Z Z Z O O O O N N N N E E E E A A A A : : : : Z Z Z Z O O O O N N N N E E E E D D D D : : : : used for checking transmissions of type...
  • Page 156 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 I I I I N N N N T T T T E E E E R R R R P P P P R R R R E E E E T T T T A A A A T T T T I I I I O O O O N N N N O O O O F F F F T T T T H H H H E E E E A A A A U U U U T T T T O O O O M M M M A A A A T T T T I I I I C C C C T T T T R R R R A A A A N N N N S S S S M M M M I I I I S S S S S S S S I I I I O O O O N N N N W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T The computer (13) has a system for self checking the electrical components which is shown by the fault warn- ing light (8) on the instrument panel.
  • Page 157 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 U U U U T T T T I I I I L L L L I I I I S S S S A A A A T T T T I I I I O O O O N N N N C C C C O O O O N N N N N N N N E E E E C C C C T T T T I I I I O O O O N N N N C C C C O O O O N N N N N N N N E E E E C C C C T T T T I I I I O O O O N N N N C C C C O O O O N N N N D D D D I I I I T T T T I I I I O O O O N N N N Z Z Z Z O O O O N N N N E E E E A A A A 1) Connect the plugs (14) to the battery.
  • Page 158 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 G G G G E E E E N N N N E E E E R R R R A A A A L L L L F F F F A A A A U U U U L L L L T T T T F F F F I I I I N N N N D D D D I I I I N N N N G G G G A A A A F F F F T T T T E E E E R R R R R R R R O O O O A A A A D D D D T T T T E E E E S S S S T T T T - - - - V V V V E E E E H H H H I I I I C C C C L L L L E E E E S S S S T T T T A A A A T T T T I I I I O O O O N N N N A A A A R R R R Y Y Y Y - - - - I I I I G G G G N N N N I I I I T T T T I I I I O O O O N N N N O O O O N N N N ( ( ( ( E E E E N N N N G G G G I I I I N N N N E E E E R R R R U U U U N N N N N N N N I I I I N N N N G G G G ) ) ) ) Light status...
  • Page 159 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 S S S S P P P P E E E E C C C C I I I I F F F F I I I I C C C C F F F F A A A A U U U U L L L L T T T T F F F F I I I I N N N N D D D D I I I I N N N N G G G G a) Identification of the earth I - The fault warning light (8) on the instrument version:...
  • Page 160 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 b) Checking version: Take the following measurement using an ohm- meter Measuring Result Fault finding point 0 to 0.5 CORRECT E and earth OTHER INCORRECT See 1 Check: the continuity of wire G, the earths.
  • Page 161 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 version: Disconnect the 6 track connector and isolate the computer from the vehicle earth (do not let it touch the vehi- cle bodywork). Take the following measurement using an ohmmeter: 85851 76241 86381G...
  • Page 162 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 II - The "DIAG" light and lights 1 to 6 extinguished (on the B. Vi. 958), regardless of the lever position. Vehicle behaviour: remains in 3rd or random gear changes, reverse normal and warning light illuminated (normal or intermittently).
  • Page 163 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 T T T T O O O O D D D D I I I I S S S S P P P P L L L L A A A A Y Y Y Y A A A A R R R R E E E E T T T T U U U U R R R R N N N N T T T T O O O O A A A A N N N N O O O O R R R R M M M M A A A A L L L L F F F F E E E E E E E E D D D D b) Repairs: V V V V O O O O L L L L T T T T A A A A G G G G E E E E .
  • Page 164 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 S S S S P P P P E E E E C C C C I I I I F F F F I I I I C C C C F F F F A A A A U U U U L L L L T T T T F F F F I I I I N N N N D D D D I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) III - If the instrument panel warning light illuminates intermittently when driving 1) Refer to section"COMPUTER, general instructions"...
  • Page 165 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 F F F F A A A A U U U U L L L L T T T T F F F F I I I I N N N N D D D D I I I I N N N N G G G G O O O O N N N N T T T T H H H H E E E E H H H H Y Y Y Y D D D D R R R R A A A A U U U U L L L L I I I I C C C C F F F F U U U U N N N N C C C C T T T T I I I I O O O O N N N N In order to view the electrical operation of the solenoid valves, part 4139-4141 of B.
  • Page 166 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 F F F F A A A A U U U U L L L L T T T T F F F F I I I I N N N N D D D D I I I I N N N N G G G G O O O O F F F F T T T T H H H H E E E E H H H H Y Y Y Y D D D D R R R R A A A A U U U U L L L L I I I I C C C C F F F F U U U U N N N N C C C C T T T T I I I I O O O O N N N N ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) 3) Assembly on vehicle Disconnect (8) and (12) and fit connector (1) to (8) and (2) to (12).
  • Page 167 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G - - - - A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G T T T T H H H H E E E E L L L L O O O O A A A A D D D D P P P P O O O O T T T T E E E E N N N N T T T T I I I I O O O O M M M M E E E E T T T T E E E E R R R R Check that the accelerator cable and kickdown are correctly adjusted beforehand.
  • Page 168 AUTOMATIC TRANSMISSION Fault finding - Test kit B. Vi. 958 C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G - - - - A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G T T T T H H H H E E E E L L L L O O O O A A A A D D D D P P P P O O O O T T T T E E E E N N N N T T T T I I I I O O O O M M M M E E E E T T T T E E E E R R R R ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) 3 3 3 3 - - - - S S S S P P P P E E E E C C C C I I I I F F F F I I I I C C C C C C C C A A A A S S S S E E E E •...
  • Page 169 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors S S S S I I I I X X X X T T T T R R R R A A A A C C C C K K K K C C C C O O O O N N N N N N N N E E E E C C C C T T T T O O O O R R R R C C C C H H H H E E E E C C C C K K K K U U U U S S S S I I I I N N N N G G G G A A A A N N N N O O O O H H H H M M M M M M M M E E E E T T T T E E E E R R R R - - - - V V V V O O O O L L L L T T T T M M M M E E E E T T T T E E E E R R R R Measuring Measuring point...
  • Page 170 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors S S S S I I I I X X X X T T T T R R R R A A A A C C C C K K K K C C C C O O O O N N N N N N N N E E E E C C C C T T T T O O O O R R R R ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) C C C C H H H H E E E E C C C C K K K K W W W W I I I I T T T T H H H H T T T T H H H H E E E E B B B B .
  • Page 171 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors Multifunction switch Disconnect the 6 track connector and check on the computer side with an ohmmeter or the B. Vi. 958 zone B, having disconnected the battery beforehand. During the test, check that the ignition is off and that the computer is isolated from the vehicle earth (do not touch the bodywork of the vehicle).
  • Page 172 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E L L L L O O O O A A A A D D D D P P P P O O O O T T T T E E E E N N N N T T T T I I I I O O O O M M M M E E E E T T T T E E E E R R R R ( ( ( ( w w w w i i i i t t t t h h h h a a a a n n n n C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E T T T T H H H H R R R R E E E E E E E E T T T T R R R R A A A A C C C C K K K K C C C C O O O O N N N N N N N N E E E E C C C C T T T T O O O O R R R R ( ( ( ( 1 1 1 1 1 1 1 1 ) ) ) ) ohmmeter) F F F F E E E E E E E E D D D D I I I I N N N N G G G G T T T T H H H H E E E E P P P P O O O O T T T T E E E E N N N N T T T T I I I I O O O O M M M M E E E E T T T T E E E E R R R R ( ( ( ( w w w w i i i i t t t t h h h h a a a a v v v v o o o o l l l l t t t t m m m m e e e e t t t t e e e e r r r r ) ) ) )
  • Page 173 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors case: Throttle opens in a clockwise direction Action on Measuring Correct Fault (Trafic) the vehicle points value finding incorrect, check the 6 Ignition on earth 4.3 V track connector (see page 23-167). 88979R Action on Measuring...
  • Page 174 AUTOMATIC TRANSMISSION Fault finding - Checking the connectors C C C C H H H H E E E E C C C C K K K K I I I I N N N N G G G G T T T T H H H H E E E E S S S S E E E E A A A A L L L L E E E E D D D D C C C C O O O O N N N N N N N N E E E E C C C C T T T T O O O O R R R R F F F F I I I I T T T T T T T T E E E E D D D D W W W W I I I I T T T T H H H H S S S S O O O O L L L L E E E E N N N N O O O O I I I I D D D D V V V V A A A A L L L L V V V V E E E E S S S S AND SOLENOID VALVES ON THEIR OWN (for the position of the solenoid pilot valves, see page 23-37) 85651 86449G...
  • Page 175 AUTOMATIC TRANSMISSION Fiche n 24 General T T T T H H H H I I I I S S S S P P P P A A A A R R R R T T T T R R R R E E E E L L L L A A A A T T T T E E E E S S S S T T T T O O O O V V V V E E E E H H H H I I I I C C C C L L L L E E E E S S S S F F F F I I I I T T T T T T T T E E E E D D D D W W W W I I I I T T T T H H H H T T T T H H H H E E E E N N N N E E E E W W W W C C C C O O O O M M M M P P P P U U U U T T T T E E E E R R R R I I I I N N N N A A A A F F F F T T T T E E E E R R R R - - - - S S S S A A A A L L L L E E E E S S S S P P P P R R R R E E E E S S S S E E E E N N N N T T T T A A A A T T T T I I I I O O O O N N N N A A A A N N N N D D D D I I I I D D D D E E E E N N N N T T T T I I I I F F F F I I I I C C C C A A A A T T T T I I I I O O O O N N N N...
  • Page 176 AUTOMATIC TRANSMISSION Fiche n 24 General 85651-1R4 Vehicle speed sensor 9 and 14 Fault warning light connector Load potentiometer Fault warning light, connector and Solenoid pilot valves XR25 connection 4 and 7 Six track connector 10 and 11 Load potentiometer connector Multifunction switch Computer 6 and 12 Solenoid valve connector...
  • Page 177 AUTOMATIC TRANSMISSION Fiche n 24 General D D D D E E E E F F F F E E E E C C C C T T T T M M M M O O O O D D D D E E E E S S S S I I I I N N N N T T T T H H H H E E E E E E E E V V V V E E E E N N N N T T T T O O O O F F F F P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S If one of the peripheral transmission components or the feed (+12V) develops a fault, the computer causes the warning light to illuminate and implements defect modes for the transmission, which can vary depending on the faulty components.
  • Page 178 AUTOMATIC TRANSMISSION Fiche n 24 General S S S S E E E E T T T T T T T T I I I I N N N N G G G G U U U U P P P P T T T T H H H H E E E E C C C C O O O O N N N N N N N N E E E E C C C C T T T T I I I I O O O O N N N N B B B B E E E E T T T T W W W W E E E E E E E E N N N N T T T T H H H H E E E E C C C C O O O O M M M M P P P P U U U U T T T T E E E E R R R R A A A A N N N N D D D D T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 To be able to make the connection between the computer and the XR25, you must have an adap-...
  • Page 179 AUTOMATIC TRANSMISSION Fiche n 24 General U U U U S S S S I I I I N N N N G G G G T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 ("new generation"...
  • Page 180 AUTOMATIC TRANSMISSION Fiche n 24 General M M M M E E E E M M M M O O O O R R R R Y Y Y Y F F F F U U U U N N N N C C C C T T T T I I I I O O O O N N N N U U U U S S S S I I I I N N N N G G G G T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 The memory function using the XR25 is used to store the values of the various parameters in the memory in order to read them one after the other...
  • Page 181 AUTOMATIC TRANSMISSION Fiche n 24 Fiche XR25 FI21624 - Bargraphs on a red background represent a fault. - Bargraphs on a white background represent a status. 23-179...
  • Page 182 AUTOMATIC TRANSMISSION Fiche n 24 Meaning of the bargraphs D D D D I I I I S S S S P P P P L L L L A A A A Y Y Y Y A A A A N N N N D D D D M M M M E E E E A A A A N N N N I I I I N N N N G G G G O O O O F F F F T T T T H H H H E E E E B B B B A A A A R R R R G G G G R R R R A A A A P P P P H H H H S S S S ..I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : The information given below is only valid for computers given in the "Vehicles concerned"...
  • Page 183 AUTOMATIC TRANSMISSION Fiche n 24 Meaning of the bargraphs Illuminated when the circuit of solenoid valve No 1is faulty. - On the keypad enter: - The following will appear on the display: either: The circuit of solenoid valve N 1 is short circuited. The circuit of solenoid valve N 1 is broken.
  • Page 184 AUTOMATIC TRANSMISSION Fiche n 24 Meaning of the bargraphs Illuminated when the full load (PF) position is recognised by the automatic transmission computer. Illuminated when the kickdown compensator supplies its information to the automatic transmission computer I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : This bargraph is always extinguished for automatic transmissions which do not have a kickdown compensator.
  • Page 185 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests R R R R E E E E A A A A D D D D I I I I N N N N G G G G T T T T H H H H E E E E V V V V A A A A R R R R I I I I O O O O U U U U S S S S - Connect the XR25 to the diagnostic socket.
  • Page 186 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests Load potentiometer (transformed load). Value expressed in %, accelerator control in full load position (PF). For vehicles not fitted with kickdown compensators: - Value less than 6.25 % full load on accelerator pedal (for kickdown function) For vehicles fitted with kickdown compensator: - Value less than 12.5 % full load on accelerator pedal (for kickdown function).
  • Page 187 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests A A A A D D D D J J J J U U U U S S S S T T T T I I I I N N N N G G G G T T T T H H H H E E E E L L L L O O O O A A A A D D D D P P P P O O O O T T T T E E E E N N N N T T T T I I I I O O O O M M M M E E E E T T T T E E E E R R R R ( ( ( ( a a a a t t t t N N N N o o o o Slacken the mounting bolts (V) of the potentio- load) meter.
  • Page 188 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests C C C C O O O O M M M M M M M M A A A A N N N N D D D D M M M M O O O O D D D D E E E E On the keypad enter: Command mode is used to test the operation of the solenoid valve statically.
  • Page 189 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests E E E E R R R R A A A A S S S S I I I I N N N N G G G G T T T T H H H H E E E E M M M M E E E E M M M M O O O O R R R R Y Y Y Y On the keypad enter: Operation to be performed at the end of each fault finding procedure.
  • Page 190 AUTOMATIC TRANSMISSION Fiche n 24 Additional tests C C C C A A A A S S S S E E E E : : : : E E E E N N N N D D D D O O O O F F F F T T T T E E E E S S S S T T T T You have complied with the previously given On the keypad enter: conditions...
  • Page 191 AUTOMATIC TRANSMISSION Fiche n 26 General T T T T H H H H I I I I S S S S P P P P A A A A R R R R T T T T R R R R E E E E L L L L A A A A T T T T E E E E S S S S T T T T O O O O V V V V E E E E H H H H I I I I C C C C L L L L E E E E S S S S F F F F I I I I T T T T T T T T E E E E D D D D A A A A S S S S S S S S T T T T A A A A N N N N D D D D A A A A R R R R D D D D W W W W I I I I T T T T H H H H A A A A N N N N E E E E W W W W C C C C O O O O M M M M P P P P U U U U T T T T E E E E R R R R P P P P R R R R E E E E S S S S E E E E N N N N T T T T A A A A T T T T I I I I O O O O N N N N This "new generation"...
  • Page 192 AUTOMATIC TRANSMISSION Fiche n 26 General 85651-2R1 - Vehicle speed sensor - Fault warning light - Connection between injection and 9A and 14A - Warning light and diagnostic automatic transmission computer socket connector - Solenoid valves 10 and 11 - Intercomputer connector 4 and 7 - Six track socket - Computer - Multifunction switch and earth...
  • Page 193 AUTOMATIC TRANSMISSION Fiche n 26 General D D D D E E E E F F F F E E E E C C C C T T T T M M M M O O O O D D D D E E E E S S S S I I I I N N N N T T T T H H H H E E E E E E E E V V V V E E E E N N N N T T T T O O O O F F F F P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S If one of the peripheral transmission components or the feed (+12V) develops a fault, the computer causes the warning light to illuminate and implements defect modes for the transmission, which can vary depending on the faulty components.
  • Page 194 AUTOMATIC TRANSMISSION Fiche n 26 General S S S S E E E E T T T T T T T T I I I I N N N N G G G G U U U U P P P P T T T T H H H H E E E E C C C C O O O O N N N N N N N N E E E E C C C C T T T T I I I I O O O O N N N N B B B B E E E E T T T T W W W W E E E E E E E E N N N N T T T T H H H H E E E E C C C C O O O O M M M M P P P P U U U U T T T T E E E E R R R R A A A A N N N N D D D D T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 The computer is connected to the diagnostic socket (17) through the connector (9A).
  • Page 195 AUTOMATIC TRANSMISSION Fiche n 26 General U U U U S S S S I I I I N N N N G G G G T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 ("new generation"...
  • Page 196 AUTOMATIC TRANSMISSION Fiche n 26 General M M M M E E E E M M M M O O O O R R R R Y Y Y Y F F F F U U U U N N N N C C C C T T T T I I I I O O O O N N N N U U U U S S S S I I I I N N N N G G G G T T T T H H H H E E E E X X X X R R R R 2 2 2 2 5 5 5 5 The memory function using the XR25 is used to store the values of the various parameters in the memory in order to read them one after the other...

  • Page 197: Fiche Xr25

    AUTOMATIC TRANSMISSION Fiche n 26 Fiche XR25 FI21626 - Bargraphs on a red background represent a fault. - Bargraphs on a white background represent a status. 23-195...
  • Page 198 AUTOMATIC TRANSMISSION Fiche n 26 Meaning of the bargraphs D D D D I I I I S S S S P P P P L L L L A A A A Y Y Y Y A A A A N N N N D D D D M M M M E E E E A A A A N N N N I I I I N N N N G G G G O O O O F F F F T T T T H H H H E E E E B B B B A A A A R R R R G G G G R R R R A A A A P P P P H H H H S S S S ..I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : The information given below is only valid for computers given in the "Vehicles concerned"...
  • Page 199 AUTOMATIC TRANSMISSION Fiche n 26 Meaning of the bargraphs Illuminated when the control circuit of the air conditioning relay cut-off is faulty - On the key pad enter: - The following will appear on the display: either: The control circuit is short circuited. The control circuit is broken.
  • Page 200 AUTOMATIC TRANSMISSION Fiche n 26 Meaning of the bargraphs Illuminated when the circuit of solenoid valve N 2 is faulty. - On the keypad enter: - The following will appear on the display: either: The circuit of solenoid valve N 2 is short circuited. The circuit of solenoid valve N 2 is broken.
  • Page 201 AUTOMATIC TRANSMISSION Fiche n 26 Meaning of the bargraphs Illuminated when the gear selector lever is in the P or N position. Starting is authorised. Illuminated when the engine is stopped. If the bargraph is illuminated when the engine is running, this means that the engine speed information is faulty or absent.
  • Page 202 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests R R R R E E E E A A A A D D D D I I I I N N N N G G G G T T T T H H H H E E E E V V V V A A A A R R R R I I I I O O O O U U U U S S S S - Connect the XR25 to the diagnostic socket.
  • Page 203 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests Engine speed. Value expressed in rpm. It varies from 0 to 6000 approximately (depending on version). Load potentiometer (transformed load). Value expressed in %, accelerator control in full load position (PF). Value less than 6.25 % full load on accelerator pedal (for kickdown function) Computer identification The identification number of the computer appears on the central display.
  • Page 204 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests C C C C O O O O M M M M M M M M A A A A N N N N D D D D M M M M O O O O D D D D E E E E The following will appear on the display: Command mode is used to statically test the ope- ration of:...
  • Page 205 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests E E E E R R R R A A A A S S S S I I I I N N N N G G G G T T T T H H H H E E E E M M M M E E E E M M M M O O O O R R R R Y Y Y Y A A A A N N N N D D D D P P P P R R R R O O O O G G G G R R R R A A A A M M M M M M M M I I I I N N N N G G G G On the keypad enter: T T T T H H H H E E E E N N N N O O O O L L L L O O O O A A A A D D D D - - - - F F F F U U U U L L L L L L L L L L L L O O O O A A A A D D D D P P P P O O O O S S S S I I I I T T T T I I I I O O O O N N N N S S S S Operation to be performed at the end of each...
  • Page 206 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests C C C C A A A A S S S S E E E E : : : : I I I I M M M M P P P P O O O O R R R R T T T T A A A A N N N N T T T T : : : : Turn off the ignition.
  • Page 207 AUTOMATIC TRANSMISSION Fiche n 26 Additional tests E E E E N N N N D D D D O O O O F F F F T T T T E E E E S S S S T T T T On the keypad enter: The following will appear on the display: The XR25 makes a noise.
  • Page 208 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination FAULT FINDING CHARTS TO BE USED FROM THE BARGRAPHS (Fault finding fiches N 24 and 26) Page ONE OF THE BARGRAPHS INDICATES A FAULT Bargraph 1 RH extinguished or no communication with automatic transmission computer Bargraph 1 LH illuminated Bargraph 2 LH illuminated...
  • Page 209 AUTOMATIC TRANSMISSION Fiches n 1 24 and 26 Fault finding using bargraph illumination BARGRAPH 1 RH EXTINGUISHED OR NO COMMUNICATION WITH THE COMPUTER Check that the battery voltage is > 10.5 V. Check that the fuse of the automatic Success transmission is not blown.
  • Page 210 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 1 LH ILLUMINATED Replace the automatic transmission computer. Erase the computer memory. Program the no load and full load values on version E7J*. And vehicles with load information supplied by the injection computer. (Without load potentiometer specific to the automatic transmission).
  • Page 211 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 2 LH ILLUMINATED: Electrical coherence fault on the lever position (illuminated = illuminated or flashing). Ignition off, disconnect the 6 track connector from the computer. Is track C on the wiring side isolated from earth? Ensure the isolation of the line between the starter motor relay and track C of the automatic transmission computer connector and that between track C and the injection computer (for...
  • Page 212 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination Connection fault BARGRAPH 3 LH ILLUMINATED: between the automatic transmission computer and the injection computer (load information) Check/ensure the continuity and the isolation of the connection between track A of the automatic transmission computer connector and the injection computer connector (track 22 for E7J engine, track 41 for the D7F engine).
  • Page 213 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination Reception fault BARGRAPH 4 LH ILLUMINATED: of the load information provided by the injection computer or automatic transmission load potentiometer fault. A) Vehicle without automatic transmission potentiometer - Bargraph 4 illuminated. Deal with Is bargraph 3 also illuminated? bargraph 3 illuminated.
  • Page 214 AUTOMATIC TRANSMISSION T.A. MB - ML - MJ Fiches n Fiches n 24 and 26 24 and 26 Fault finding using bargraph illumination Fault finding using bargraph illumination B) Vehicle with automatic transmission potentiometer Engine off and no load position, is there 50 % on # Turn the ignition off then on again.
  • Page 215 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 5 LH ILLUMINATED: Injection potentiometer circuit fault The injection potentiometer fault information is transmitted by the injection computer to the automatic transmission computer the automatic transmission operates the with the emergency value. Refer to the fault finding of the injection section then erase the memory of the automatic transmission computer and validate the no load and full load values.

  • Page 216: Air Conditioning

    AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination Air conditioning BARGRAPH 7 RH ILLUMINATED: authorisation relay control circuit fault. Enter *27 on the XR25 keypad. What is displayed? No fault Check the presence and the condition of the feed fuse of the air conditioning relay.
  • Page 217 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 8 RH and / or LH ILLUMINATED: Solenoid pilot valve fault. Bargraph 8 LH: EL1: Before starting to work on a vehicle with a load potentiometer specific to the automatic transmission, look for any short circuits between tracks B and C of the potentiometer.
  • Page 218 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination Bargraph 8RH: EL2: Before starting to work on a vehicle with a load potentiometer specific to the automatic transmission, look for any short circuits between tracks B and C of the potentiometer. (This fault causes a drop in overall 5 volts feed voltage and a solenoid pilot valve fault to be memorised).
  • Page 219 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 9 RH ILLUMINATED: Checking the operation of the kickdown switch 1) Bargraph 9 RH illuminated in no load position: Versions with E7J and D7F engines have no kickdown switch : Bargraph 9 RH always illuminated.
  • Page 220 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination 2) Bargraph 9 RH extinguished in full load position: Vehicles fitted with an open contact kickdown switch:: Earth maintained on track D of the computer. Check the adjustment of the accelerator pedal. Replace the kickdown Is there continuity between the 2 tracks of the switch.
  • Page 221 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 9 LH EXTINGUISHED IN THE FULL LOAD POSITION If, in addition to this bargraph, bargraph 4 is also illuminated, deal with bargraph 4 first. Vehicle with kickdown switch: Deal with bargraph 9 Does bargraph 9 RH illuminate in the full load extinguished in the full load...
  • Page 222 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 10 RH and / or LH ILLUMINATED Program the no load and full load values (only on version E7J*). Failure to program (bargraph 10 remains illuminated after programming) is normal if the values programmed are not between 1.37 and 37.5 % in the full load position and/or greater than 60 % in the no load position.
  • Page 223 AUTOMATIC TRANSMISSION Fiches n 24 and 26 Fault finding using bargraph illumination BARGRAPH 11 RH EXTINGUISHED IN P/N : Starting authorisation selector in position P/N. Check all control components and adjust them. BARGRAPH 12 RH ILLUMINATED ENGINE RUNNING: Engine speed information fault. Check / ensure the continuity and the insulation of the connection between track C of the automatic transmission computer connector and the injection computer connector (track 12 for E7J engine, track 48 for D7F engine).
  • Page 224 AUTOMATIC TRANSMISSION Fault finding aid LIST OF PROBLEMS TO BE USED AS A FUNCTION OF CUSTOMER COMPLAINTS P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G (with the knowledge that the warning light is working correctly) P P P P R R R R O O O O B B B B L L L L E E E E M M M M W W W W H H H H I I I I C C C C H H H H C C C C A A A A N N N N B B B B E E E E N N N N O O O O T T T T I I I I C C C C E E E E D D D D W W W W I I I I T T T T H H H H O O O O U U U U T T T T D D D D R R R R I I I I V V V V I I I I N N N N G G G G Poor operation of the starter motor or reversing lights...

  • Page 225: Fault Finding Aid

    AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) (with the knowledge that the warning light is working correctly) cont P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S S S S S T T T T A A A A R R R R T T T T I I I I N N N N G G G G O O O O R R R R O O O O P P P P E E E E R R R R A A A A T T T T I I I I N N N N G G G G T T T T H H H H E E E E V V V V E E E E H H H H I I I I C C C C L L L L E E E E...
  • Page 226 AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) (with the knowledge that the warning light is working correctly) cont P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S S S S S T T T T A A A A R R R R T T T T I I I I N N N N G G G G O O O O R R R R O O O O P P P P E E E E R R R R A A A A T T T T I I I I N N N N G G G G T T T T H H H H E E E E V V V V E E E E H H H H I I I I C C C C L L L L E E E E ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) )
  • Page 227 AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) (with the knowledge that the warning light is working correctly) cont P P P P R R R R O O O O B B B B L L L L E E E E M M M M L L L L I I I I N N N N K K K K E E E E D D D D T T T T O O O O T T T T H H H H E E E E G G G G E E E E A A A A R R R R S S S S...
  • Page 228 AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) (with the knowledge that the warning light is working correctly) cont Page...
  • Page 229 AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M S S S S W W W W I I I I T T T T H H H H O O O O U U U U T T T T T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I N N N N G G G G ( ( ( ( c c c c o o o o n n n n t t t t ) ) ) ) (with the knowledge that the warning light is working correctly) cont O O O O T T T T H H H H E E E E R R R R...
  • Page 230 AUTOMATIC TRANSMISSION Fault finding aid P P P P R R R R O O O O B B B B L L L L E E E E M M M M W W W W I I I I T T T T H H H H I I I I L L L L L L L L U U U U M M M M I I I I N N N N A A A A T T T T I I I I O O O O N N N N O O O O F F F F T T T T H H H H E E E E F F F F A A A A U U U U L L L L T T T T W W W W A A A A R R R R N N N N I I I I N N N N G G G G L L L L I I I I G G G G H H H H T T T T FAULT FINDING WITH THE XR25 (see display and meaning of the bargraphs NO COMMUNICATION BETWEEN THE XR25...
  • Page 231 AUTOMATIC TRANSMISSION Fault finding aid Chart 1 : Slipping when starting for all forward gear lever selections without engine racing normal operation above 45 - 55 mph (70/80 km/h) in no load position + no sensation when changing gear. If the warning light is operational and it remains extinguished when there is a fault, drain and remove the automatic transmission sump.
  • Page 232 AUTOMATIC TRANSMISSION Fault finding aid Chart 2 : Slipping when starting in forward or reverse gear but operating normal above 12.5 mph (20 km/h) in forward gear. If the warning light is operational and it remains extinguished when there is a fault, the fault is due to the converter freewheel which is no longer engaging.
  • Page 233 AUTOMATIC TRANSMISSION Fault finding aid Chart 3 : Slipping in reverse gear. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect. Check the oil level and top it up if necessary.
  • Page 234 AUTOMATIC TRANSMISSION Fault finding aid Chart 4 : Skidding with engine racing when starting in position D or 2, but not in 1 (sometimes intermittently) If the warning light is operational and it remains extinguished when there is a fault, the freewheel is damaged. Refer to the instructions for replacement in MR T.A.M.
  • Page 235 AUTOMATIC TRANSMISSION Fault finding aid Chart 5 : Juddering in reverse. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect. Check the oil level and top it up if necessary.
  • Page 236 AUTOMATIC TRANSMISSION Fault finding aid Chart 6 : The engine races in full load position when changing from 2/3 and 3/1. The automatic transmission seems to change into neutral. If the warning light is operational and it remains extinguished when there is a fault, connect pressure gauge BVI 466-07 and measure the line pressure in 2nd gear hold and full load.
  • Page 237 AUTOMATIC TRANSMISSION Fault finding aid Chart 7 : Skidding when starting, lever in D, juddering in reverse. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect.
  • Page 238 AUTOMATIC TRANSMISSION Fault finding aid Chart 8 : Slipping when changing from 2 to 3 only. If the warning light is operational and it remains extinguished when there is a fault, connect pressure gauge BVI 466-07 and measure the line pressure in 2nd gear hold and full load. Correct Adjust the pressure if necessary.
  • Page 239 AUTOMATIC TRANSMISSION Fault finding aid Chart 9 : Remains in 1st, warning light extinguished. If the warning light is operational and it remains extinguished when there is a fault, warm up the automatic transmission and carry out the following road test: Lever in 2nd gear hold, start off under full load to reach a speed greater than 43 mph (70 km/h).
  • Page 240 AUTOMATIC TRANSMISSION Fault finding aid Chart 10 : 3rd gear missing with racing of engine in 2nd (reverse gear correct). If the warning light is operational and it remains extinguished when there is a fault, remove the hydraulic distributor.Does valve VP2 slide normally? (Refer to MR T.A.M., hydraulic distributor section).
  • Page 241 AUTOMATIC TRANSMISSION Fault finding aid Chart 11 : Random gear changes up to 60 / 75 mph (100/125 km/h). Vehicle with kickdown switch: If the warning light is operational and it remains extinguished when there is a fault, disconnect the kickdown switch wire.
  • Page 242 AUTOMATIC TRANSMISSION Fault finding aid Chart 12 : Random gear changes and hesitation except in 3rd If the warning light is operational and it remains extinguished when there is a fault, check the computer earth: Tightness of the earth wire of the multifunction switch on the housing or the wire on track E of the 6 track computer connector for the first versions.
  • Page 243 AUTOMATIC TRANSMISSION Fault finding aid Chart 13 : Banging when changing gears in no load when changing lever from 2 to D. If the warning light is operational and it remains extinguished when there is a fault, check the oil level and top up if necessary. Correct Does the fault persist? Check the vacuum pipe...
  • Page 244 AUTOMATIC TRANSMISSION Fault finding aid Chart 14 : Slipping when changing gears in full load position If the warning light is operational and it remains extinguished when there is a fault, check the condition of the oil. Is it dirty and does it smell? (Check if it has already been changed since the fault appeared).
  • Page 245 AUTOMATIC TRANSMISSION Fault finding aid Chart 15 : Banging when starting with lever in D - 2 - 1. (with engaging delay) When warm : If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M.
  • Page 246 AUTOMATIC TRANSMISSION Fault finding aid Chart 16 : Banging when changing from position N to D - 2 - 1 or R. If the warning light is operational and it remains extinguished when there is a fault, check and if necessary adjust the idle speed. Also check the condition of Correct the engine and transmission assembly mounting pads and the condition of the driveshafts.
  • Page 247 AUTOMATIC TRANSMISSION Fault finding aid Chart 17 : The vehicle moves forwards or backwards with the lever in N and the starter motor and reversing lights positions are offset. If the warning light is operational and it remains extinguished when there is a fault, the fault is due to the selection mechanism being offset.
  • Page 248 AUTOMATIC TRANSMISSION Fault finding aid Chart 19 : The vehicle moves forwards, lever in N, position P operational. Normal starter action. If the warning light is operational and it remains extinguished when there is a fault and it is not a case of creeping when the oil is cold (less than 60 C), the clutches have been damaged (also check the brakes) Refer to the instructions for replacement in MR T.A.M.
  • Page 249 AUTOMATIC TRANSMISSION Fault finding aid Chart 21 : The starter motor does not work but the reversing lights work. If the warning light is operational and it remains extinguished when there is a fault, move the selector lever, while operating the starter. Does the vehicle start? Adjust the control according to the Workshop Disconnect the 6 track computer connector and check...
  • Page 250 AUTOMATIC TRANSMISSION Fault finding aid Chart 22 : Reversing lights do not work but the starter motor works. If the warning light is operational and it remains extinguished when there is a fault, check the condition of the reversing lights Correct bulbs and check the earth on the rear lights units.
  • Page 251 AUTOMATIC TRANSMISSION Fault finding aid Chart 23 : The starter motor and the reversing lights do not work Check the connection of the 6 track connector on the computer and the condition of its connections. 3DMXTT1.0 23-250...
  • Page 252 AUTOMATIC TRANSMISSION Fault finding aid Chart 24 : The engine speed increases in 1st (2nd changes above 37 mph (60 km/h)). When the pedal is released, the AT seems to change to neutral and there is a bang when reaccelerating Vehicle with kickdown switch: If the warning light is operational and it remains extinguished when there is a fault, connect the XR25 and check the operation of the kickdown switch.
  • Page 253 AUTOMATIC TRANSMISSION Fault finding aid Chart 25 : Starting possible in all selector lever positions If the warning light is operational and it remains extinguished when there is a fault, turn the ignition off and disconnect the 6 track computer connector. Carry out a starting test.
  • Page 254 AUTOMATIC TRANSMISSION Fault finding aid Chart 26 : No vehicle drive in R, D, 2 and 1 when warm only; the vehicle starts again after being stopped for a few minutes (fault which can be repetitive) If the warning light is operational and it remains extinguished when there is a fault, the strainer is blocked and the automatic transmission is burnt out.
  • Page 255 AUTOMATIC TRANSMISSION Fault finding aid Chart 27 : Will not change into 2nd, the engine speed increases in 1st above 31 mph (50 km/h), changes to 3rd after releasing pedal. If the warning light is operational and it remains extinguished when there is a fault, check the appearance of the oil.
  • Page 256 AUTOMATIC TRANSMISSION Fault finding aid Chart 28 : The engine races when changing from 2/3. the automatic transmission seems to change to neutral + no drive in reverse. If the warning light is operational and it remains extinguished when there is a fault, check the hydraulic distributor.
  • Page 257 AUTOMATIC TRANSMISSION Fault finding aid Chart 29 : No reverse gear or engine braking in 1st gear hold. Reversing lights operate normally. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Correct Replace the dipstick if it is incorrect.
  • Page 258 AUTOMATIC TRANSMISSION Fault finding aid Chart 30 : No drive with lever in D and 2 but drive in 1 only. If the warning light is operational and it remains extinguished when there is a fault, the freewheel is damaged. Refer to the instructions for replacement in MR T.A.M.
  • Page 259 AUTOMATIC TRANSMISSION Fault finding aid Chart 32 : Metallic noise when idling from the converter housing. If the warning light is operational and it remains extinguished when there is a fault, the drive plate is split. Refer to the instructions for replacement in MR T.A.M. Chart 33 : Noise when operating the starter motor.
  • Page 260 AUTOMATIC TRANSMISSION Fault finding aid Chart 34 : Drive plate keeps breaking. If the warning light is operational and it remains extinguished when there is a fault, the engine / automatic transmission centring dowels were not refitted when the drive plate was replaced (Refer to MR T.A.M.).
  • Page 261 AUTOMATIC TRANSMISSION Fault finding aid Chart 36 : Oil leak Wash the automatic transmission. Top up the level and apply talc. Can the origin of the leak be detected? What is the origin of the leak? Replace the sunwheel seals. Leak from sunwheels Does the leak persist? Fit seal Part Number 7700729392 after...
  • Page 262 AUTOMATIC TRANSMISSION Fault finding aid Chart 37 : Lever difficult to move or lever blocked. Disconnect the control cable on the automatic transmission side. Is the lever free to move? Repair the control: Remove the hydraulic distributor Cable seized in sheath. and check the manual valve.
  • Page 263 AUTOMATIC TRANSMISSION Fault finding aid Chart 38 : Engine races after a bend. Surging after braking Check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect. Check the oil level and top it up if necessary. After checking / replacing the dipstick and topping up the level, does the fault persist? Check the position of the strainer as shown in MR Correct...
  • Page 264 AUTOMATIC TRANSMISSION Fault finding aid Chart 40 : Fault warning light illuminates and extinguishes at random. If the XR25 gives no information on the nature of the origin of the fault, check the automatic transmission fuse and its mounting. Is this correct? Repair / replace the faulty components.
  • Page 265 AUTOMATIC TRANSMISSION Fault finding aid Chart 41 : Random gear changes. If the XR25 gives no information on the nature of the origin of the fault, check the adjustment and tightness of the automatic transmission control. After the operation, does the fault persist? Check the condition of the high voltage ignition leads and their routing.Replace the leads if necessary.
  • Page 266 AUTOMATIC TRANSMISSION Fault finding aid Chart 42 : Gear changing thresholds delayed and warning light illuminates. (vehicles fitted with on-board computer) If the XR25 gives no information on the nature of the origin of the fault, check that the potentiometer wire is not incorrectly connected in place of the on-board computer wire. Reconnect if necessary.
  • Page 267 AUTOMATIC TRANSMISSION Fault finding aid Chart 44 : Vehicle does not drive in forward gear or reverse gear. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect.
  • Page 268 AUTOMATIC TRANSMISSION Fault finding aid Chart 45 : No 1st gear after operation on distributor If the warning light is operational and it remains extinguished when there is a fault, the solenoid pilot valves are incorrectly connected. Only solenoid pilot valve EL1 has a reference mark to correspond with valve VP1. Chart 46 : Automatic transmission remains locked in 3rd gear and warning light remains extinguished.
  • Page 269 AUTOMATIC TRANSMISSION Fault finding aid Chart 47 : No reverse gear when warm or bang when engaging reverse when reaccelerating. If the warning light is operational and it remains extinguished when there is a fault, check the condition of the engine and transmission assembly mounting Correct pads.
  • Page 270 AUTOMATIC TRANSMISSION Fault finding aid Chart 50 : Banging when changing gears. If the warning light is operational and it remains extinguished when there is a fault, check the conformity of the dipstick on the table in MR T.A.M. Replace the dipstick if it is incorrect. Check the oil level and top it up if necessary.
  • Page 271 AUTOMATIC TRANSMISSION Fault finding aid Chart 51 : No kickdown at full load or kickdown threshold abnormal at full load. Versions fitted with M4-2 type computer with kickdown switch: If the warning light is operational and it remains extinguished when there is a fault, use the XR25 to check the operation of the kickdown switch.
  • Page 272 AUTOMATIC TRANSMISSION Fault finding aid Chart 51 : No kickdown at full load or kickdown threshold abnormal at full load (cont) Versions fitted with M4-3 type computer with kickdown switch: If the warning light is operational and it remains extinguished when there is a fault, check the operation of the kickdown switch.
  • Page 273 AUTOMATIC TRANSMISSION Fault finding aid Chart 51 : No kickdown at full load or kickdown threshold abnormal at full load (cont) Versions fitted with M4-3 type computer without kickdown switch: If the warning light is operational and it remains extinguished when there is a fault, for# 12 is the transformed load less than 6.25 % for full load? no for E7J* no for all types except E7J*...
  • Page 274 AUTOMATIC TRANSMISSION Fault finding aid Chart 52 : No communication between the XR25 and the computer. Versions with an M 4-2 computer : Check that the battery voltage > 10.5 V. Check that the automatic transmission fuse has not blown. Correct After these checks, does the fault persist? Check the connection of the 2 track connector making the connection between the diagnostic socket and the...
  • Page 275 AUTOMATIC TRANSMISSION Fault finding aid Chart 52 : No communication between the XR25 and the computer (cont). Versions with an M 4-3 computer : Check that the battery voltage > 10.5 V. Check that the automatic transmission fuse has not blown. Correct After these checks, does the fault persist? If the XR25 is connected directly to the diagnostic socket,...
  • Page 276 AUTOMATIC TRANSMISSION Fault finding aid Chart 53 : Warning light does not illuminate when ignition turned on. Disconnect the 3 track MIC connector or the 2 track connector (depending on computer version) supplying the warning light and earth track A of the MIC connector or the warning light output on the 2 track connector.

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