DTC C1145, C1155, C1165, C1175 [DSC]

id040220801100

DTC

C1145, C1155, C1165, C1175

ABS wheel-speed sensor

DETECTION CONDITION

• Open circuit or short to ground has been detected in the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels.

POSSIBLE CAUSE

• Open circuit or short to ground in the wiring harness between the following DSC HU/CM terminals and the ABS wheel-speed sensor terminals:
- DSC HU/CM terminal AP-RF ABS wheel-speed sensor terminal A
- DSC HU/CM terminal AS-RF ABS wheel-speed sensor terminal B
- DSC HU/CM terminal I-LF ABS wheel-speed sensor terminal A
- DSC HU/CM terminal F-LF ABS wheel-speed sensor terminal B
- DSC HU/CM terminal O-RR ABS wheel-speed sensor terminal A
- DSC HU/CM terminal R-RR ABS wheel-speed sensor terminal B
- DSC HU/CM terminal AJ-LR ABS wheel-speed sensor terminal A
- DSC HU/CM terminal AG-LR ABS wheel-speed sensor terminal B
• ABS wheel-speed sensor malfunction
• Poor connection at connectors (female terminal)

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND
• Turn the ignition switch off.
• Disconnect the DSC HU/CM connectors.
• Inspect for continuity between the following DSC HU/CM connector terminals (vehicle harness-side) and body ground:
- RF ABS wheel-speed sensor(+): AP
- RF ABS wheel-speed sensor(-): AS
- LF ABS wheel-speed sensor(+): I
- LF ABS wheel-speed sensor(-): F
- RR ABS wheel-speed sensor(+): O
- RR ABS wheel-speed sensor(-): R
- LR ABS wheel-speed sensor(+): AJ
- LR ABS wheel-speed sensor(-): AG
• Is there continuity?
Yes
Go to the next step.
No
Go to Step 3.
2
INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR SHORT TO GROUND
• Disconnect the ABS wheel-speed sensor connectors.
• Inspect for continuity between the following DSC HU/CM connector terminals (vehicle harness-side) and body ground:
- RF ABS wheel-speed sensor(+): AP
- RF ABS wheel-speed sensor(-): AS
- LF ABS wheel-speed sensor(+): I
- LF ABS wheel-speed sensor(-): F
- RR ABS wheel-speed sensor(+): O
- RR ABS wheel-speed sensor(-): R
- LR ABS wheel-speed sensor(+): AJ
- LR ABS wheel-speed sensor(-): AG
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 4.
No
Replace the ABS wheel-speed sensor, then go to Step 4.
3
INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR OPEN CIRCUIT
• Inspect for continuity between the DSC HU/CM connectors (vehicle harness-side) and the following vehicle harness-side terminals of ABS wheel-speed sensors:
- RF ABS wheel-speed sensor(+): AP-A
- RF ABS wheel-speed sensor(-): AS-B
- LF ABS wheel-speed sensor(+): I-A
- LF ABS wheel-speed sensor(-): F-B
- RR ABS wheel-speed sensor(+): O-A
- RR ABS wheel-speed sensor(-): R-B
- LR ABS wheel-speed sensor(+): AJ-A
- LR ABS wheel-speed sensor(-): AG-B
• Is there continuity?
Yes
Go to the next step.
No
Replace the ABS wheel-speed sensor, then go to the next step.
4
VERIFY THAT THE SAME DTC IS NOT PRESENT
• Reconnect all disconnected connectors.
• Clear the DTCs from the memory.
• Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC CM, then go to the next step.
No
Go to the next step.
5
VERIFY THAT NO OTHER DTCS ARE PRESENT
• Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC Table.)
No
DTC troubleshooting completed.