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DTC C1145, C1155, C1165, C1175

BHE040243000W21

DTC | C1145 C1155 C1165 C1175 | RF ABS wheel-speed sensor (open circuit) LF ABS wheel-speed sensor (open circuit) RR ABS wheel-speed sensor (open circuit) LR ABS wheel-speed sensor (open circuit)
DETECTION CONDITION | • Open circuit has been detected in the ABS wheel-speed sensor or the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels.
POSSIBLE CAUSE | • Open circuit in the wiring harness between the following DSC HU/CM terminal and the ABS wheel-speed sensor terminal: – DSC HU/CM terminal AC-RF ABS wheel-speed sensor terminal A – DSC HU/CM terminal AE-RF ABS wheel-speed sensor terminal B – DSC HU/CM terminal AL-LF ABS wheel-speed sensor terminal A – DSC HU/CM terminal AJ-LF ABS wheel-speed sensor terminal B – DSC HU/CM terminal AF-RR ABS wheel-speed sensor terminal A – DSC HU/CM terminal AI-RR ABS wheel-speed sensor terminal B – DSC HU/CM terminal AH-LR ABS wheel-speed sensor terminal A – DSC HU/CM terminal AK-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 OPEN CIRCUIT • Turn the ignition switch off. • Disconnect DSC HU/CM connector. • Measure resistance between suspected sensor terminals of DSC HU/CM connector (harness-side). – RF ABS wheel-speed sensor: AC-AE – LF ABS wheel-speed sensor: AL-AJ – RR ABS wheel-speed sensor: AF-AI – LR ABS wheel-speed sensor: AH-AK • Is the resistance normal? Resistance Front ABS wheel-speed sensor: 0.79-2.2 kilohms Rear ABS wheel-speed sensor: 1.3-1.7 kilohms | Yes | Go to Step 4.
No | Go to the next step.
2 | INSPECT ABS WHEEL-SPEED SENSOR • Turn the ignition switch off. • Disconnect suspected sensor connectors and inspect resistance between sensor terminals (part-side). • Is the resistance normal? Resistance Front ABS wheel-speed sensor: 0.79-2.2 kilohms Rear ABS wheel-speed sensor: 1.3-1.7 kilohms | Yes | Go to the next step.
No | Replace the ABS wheel-speed sensor, then go to Step 4. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
3 | INSPECT DSC HU/CM TO ABS WHEEL-SPEED SENSOR FOR OPEN CIRCUIT • Inspect for continuity between suspected sensor terminals of DSC HU/CM connector (harness-side) and ABS wheel-speed sensor connector. (vehicle harness-side) – RF ABS wheel-speed sensor (+): AC-A – RF ABS wheel-speed sensor (-): AE-B – LF ABS wheel-speed sensor (+): AL-A – LF ABS wheel-speed sensor (-): AJ-B – RR ABS wheel-speed sensor (+): AF-A – RR ABS wheel-speed sensor (-): AI-B – LR ABS wheel-speed sensor (+): AH-A – LR ABS wheel-speed sensor (-): AK-B • Is there continuity? | Yes | Repair or replace poor connections of DSC HU/CM connector and/or ABS wheel-speed sensor connectors, then go to the next step.
No | Repair or replace the wiring harness for open circuits between DSC HU/CM and ABS wheel-speed sensors, then go to the next step.
4 | VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See Clearing DTCs Procedures.) • Are the same DTCs present? | Yes | Replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
No | Go to the next step.
5 | VERIFY AFTER REPAIR PROCEDURE • Are any other DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC Table.)
No | DTC troubleshooting completed.