Dtc C1122: Engine Speed Signal - Suzuki SX4 Service Manual
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Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (278 pages) ,
- Owner's manual (18 pages)
Table of Contents
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6C-24 Power Assisted Steering System:
Step
6
Vehicle speed signal circuit check
1) With ignition switch turned OFF, disconnect connectors
from BCM.
2) Check BCM connector for proper connection.
3) If OK, turn ON ignition switch, measure voltage between
"G04-15" or "G04-22" wire terminal of BCM connector
and body ground.
Is voltage 4 – 5 V?
7
BCM voltage check
1) With ignition switch turned OFF, connect BCM
connector.
2) Check BCM for vehicle speed signal output referring to
"Inspection of P/S Control Module and Its Circuits".
Is it in good condition?
8
Vehicle speed signal circuit check
1) Check that vehicle speed signal circuit is as follows.
• Insulation resistance of wire harness is infinity
between "Vehicle speed signal" terminal and other
terminal at P/S control module connector.
• Wiring harness resistance of "Vehicle speed signal"
circuit is less than 1Ω.
• Insulation resistance between "Vehicle speed signal"
circuit and vehicle body ground is infinity.
• Circuit voltage between "Vehicle speed signal" circuit
and ground circuit is 0 – 1 V with ignition switch turned
ON.
Is it in good condition?
DTC C1122: Engine Speed Signal
Wiring Diagram
WHT
2
1
8
4
5
[A]: P/S control module connector No.1 "E11" (viewed from harness side)
[B]: P/S control module connector No.2 "E13" (viewed from harness side)
[C]: M15A engine with 4A/T equipped with slip control model (Hong Kong model)
1. Main fuse box
2. Ignition switch
Action
7
9
GRN
E13-1
3
10
LT GRN/
GRN
E11-1
BLK
BLK
E13-2
12V
E01-4
BRN
E11-12
[C]E01-44
11
Yes
Go to Step 7.
Replace P/S control
module.
Replace P/S control
module.
6
[A]
12V
12 13 14 15 16 17 18 19 20
11
3
4
1
2
3. Junction block assembly
4. Main fuse
5. ECM
6. P/S control module
7. Individual circuit fuse box No.1
No
Go to Step 8.
Replace BCM.
Repair or replace
defective circuit.
S7RW0A6304015
[B]
1
5
6
7
8
9
10
2
I6RW0D630004-01
8. "IGN" fuse
9. "P/S" fuse
10. "IG1 SIG" fuse
11. Engine speed signal circuit
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Troubleshooting
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Do you have a question about the SX4 and is the answer not in the manual?
Questions and answers
Adjust throttle motor
The idle speed on a Suzuki SX4 should be controlled by the Idle Air Control Valve (IACV) rather than adjusting the idle screw on the throttle body, as the screw is factory set. Before using compressed air in the idle-air-bypass passages, the IACV should be removed to prevent damage to its delicate mechanism. If there is an issue with idle speed, checking the IACV function and referring to the SX4 service manual is recommended.
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I have an issue of crank but not starting When I scan it brought this codeU0100 Which means no communication thou crank sensor wire was cut off but it was fix back What could be wrong and what could be the solution,
My heater stopped working the blower **** is good, control unit ?
Possible issues with the heater in a Suzuki SX4 if the blower is working but the heater is not include:
1. Incorrect Temperature Output
- Temperature control cable broken or bent (non-A/C and manual A/C) → Check the temperature control cable.
- Temperature selector faulty (non-A/C and manual A/C) → Check the temperature selector.
- Incorrect installation of the temperature control cable (non-A/C and manual A/C) → Check and adjust the position as necessary.
- Temperature control door assembly broken → Repair the temperature control door assembly.
- Air ducts clogged → Repair air ducts.
- Heater core leaked or clogged → Replace the heater core.
- Heater hoses leaked or clogged → Replace heater hoses.
- Thermostat faulty → Check the thermostat.
- Temperature control actuator faulty (auto A/C) → Check the temperature control actuator.
- HVAC control module faulty (auto A/C) → Check the HVAC control module.
- Wiring or grounding faulty (auto A/C) → Repair as necessary.
2. Other Possible Causes
- Air flow control cable broken or bent → Check the air flow control cable.
Checking and addressing these components should help identify and resolve the heater issue.
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دلایل بالا رفتن مصرف بنزین در مدل اتومات
increasing revs when changing gears
The Suzuki SX4 may have increasing revs when changing gears due to its drive-by-wire system and the difference in final drive ratios between the manual (4.41) and automatic (2.81) transmissions. This difference causes high cruising RPMs in the manual version and sluggishness in the automatic. Additionally, if the revs climb while going uphill, it may be due to the transmission downshifting or kicking out of overdrive. Other possible causes include low transmission fluid, abuse, or a faulty transmission design.
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