Dtc P0741 / P0742: Tcc Circuit Performance Or Stuck Off / Tcc Circuit Stuck - Suzuki SX4 Service Manual

Step
7 Check output shaft speed sensor (VSS) gears visually
1) Check output shaft speed sensor gears for the
followings.
• No damage in drive gear on differential case
• No damage in driven gear in output shaft speed
sensor
Is result satisfactory?
DTC P0741 / P0742: TCC Circuit Performance or Stuck OFF / TCC Circuit Stuck ON
DTC Detecting Condition and Trouble Area
DTC P0741
DTC detecting condition
When driving vehicle with 3rd or 4th gear in "D" range,
difference in revolution between engine and A/T input (input
shaft speed) is larger than specification although TCM
commanded TCC solenoid valve to turn ON.
DTC P0742
DTC detecting condition
When driving vehicle with 2nd, 3rd or 4th gear in "D" range,
difference in revolution between engine and A/T input (input
shaft speed) is smaller than specification although TCM
commanded TCC solenoid valve to turn OFF.
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine and warm it up to normal operating temperature.
4) Shift select lever to "N" and "D" range for each 10 seconds.
5) Drive vehicle with 3rd or 4th gear in "D" range and lock-up ON for 2 seconds or longer referring to "A/T System
Diagram".
6) Shift select lever to "3" range.
7) Drive vehicle with 2nd or 3rd gear in "3" range, 15 – 30% throttle opening and at vehicle speed of 25 – 40 km/h (16
– 25 mile/h) at least for 1 second.
8) Stop vehicle and turn ignition switch OFF.
9) Repeat Step 3) to 7) one time.
10) Stop vehicle and check DTC.
Action
Automatic Transmission/Transaxle:
Yes
Intermittent trouble or
faulty TCM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
If OK, substitute a
known-good TCM and
recheck.
Trouble area
• Mechanical malfunction of TCC solenoid valve
• Malfunction of valve body assembly
• Fluid passage clogged or leaking
• Torque converter clutch malfunction
Trouble area
• Mechanical malfunction of TCC solenoid valve
• Malfunction of valve body assembly
• Fluid passage clogged or leaking
• Torque converter clutch malfunction
5A-55
No
Replace drive gear and/
or driven gear of output
shaft speed sensor.
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