DTC C1145, C1155, C1165, C1175 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2801100

DTC | C1145 C1155 C1165 C1175 | RF ABS wheel-speed sensor system LF ABS wheel-speed sensor system RR ABS wheel-speed sensor system LR ABS wheel-speed sensor system
DETECTION CONDITION | • Open circuit, or short to ground or power supply has been detected in the ABS wheel-speed sensor or ABS wheel-speed sensor wiring harness on any of the four vehicle wheels.
POSSIBLE CAUSE | • Open circuit, or short to ground or power supply in the wiring harness between the following terminals of the DSC HU/CM and ABS wheel-speed sensor: ― DSC HU/CM terminal M—RF ABS wheel-speed sensor terminal A ― DSC HU/CM terminal O—RF ABS wheel-speed sensor terminal B ― DSC HU/CM terminal F—LF ABS wheel-speed sensor terminal A ― DSC HU/CM terminal E—LF ABS wheel-speed sensor terminal B ― DSC HU/CM terminal I—RR ABS wheel-speed sensor terminal B ― DSC HU/CM terminal L—RR ABS wheel-speed sensor terminal A ― DSC HU/CM terminal G—LR ABS wheel-speed sensor terminal B ― DSC HU/CM terminal H—LR ABS wheel-speed sensor terminal A • ABS wheel-speed sensor malfunction • Poor connection at connectors (female terminal)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT PID TO VERIFY THAT WHEEL SPEED-SIGNALS ARE TRANSMITTED FROM ABS WHEEL- SPEED SENSOR USING M-MDS • Turn the ignition switch to the LOCK position. • Connect the M-MDS to the DLC-2. • Select the following PIDs using the M-MDS: ― LF_WSPD ― LR_WSPD ― RF_WSPD ― RR_WSPD • Drive the vehicle. • Verify that the wheel speed-signals are transmitted from each ABS wheel-speed sensor. • Are the wheel-speed signals transmitted? | Yes | Go to Step 5.
No | Go to the next step.
2 | INSPECT FOR OPEN CIRCUIT IN WIRING HARNESS BETWEEN DSC HU/CM AND ABS WHEEL-SPEED SENSOR • Turn the ignition switch to the LOCK position. • Disconnect the DSC HU/CM connector and ABS wheel-speed sensor. • Inspect for continuity in the wiring harness between the following ABS wheel-speed sensor connectors on the vehicle wiring harness-side and DSC HU/CM connectors. ― RF ABS wheel-speed sensor (+): M—A ― RF ABS wheel-speed sensor (–): O—B ― LF ABS wheel-speed sensor (+): F—A ― LF ABS wheel-speed sensor (–): E—B ― RR ABS wheel-speed sensor (+): I—B ― RR ABS wheel-speed sensor (–): L—A ― LR ABS wheel-speed sensor (+): G—B ― LR ABS wheel-speed sensor (–): H—A • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 5.
3 | INSPECT WIRING HARNESS BETWEEN DSC HU/CM AND ABS WHEEL-SPEED SENSOR FOR SHORT TO POWER SUPPLY • Inspect the voltage between the following terminals of the DSC HU/CM connector and body ground: ― RF ABS wheel-speed sensor (+): M—body ground ― RF ABS wheel-speed sensor (–): O—body ground ― LF ABS wheel-speed sensor (+): F—body ground ― LF ABS wheel-speed sensor (–): E—body ground ― RR ABS wheel-speed sensor (+): I—body ground ― RR ABS wheel-speed sensor (–): L—body ground ― LR ABS wheel-speed sensor (+): G—body ground ― LR ABS wheel-speed sensor (–): H—body ground • Is the voltage approx. 0 V? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 5.
4 | INSPECT FOR SHORT TO GROUND IN WIRING HARNESS BETWEEN DSC HU/CM AND ABS WHEEL-SPEED SENSOR • Inspect for continuity in the wiring harness between the following DSC HU/CM connector terminals on the vehicle wiring harness-side and body ground. ― RF ABS wheel-speed sensor (+): M ― RF ABS wheel-speed sensor (–): O ― LF ABS wheel-speed sensor (+): F ― LF ABS wheel-speed sensor (–): E ― RR ABS wheel-speed sensor (+): I ― RR ABS wheel-speed sensor (–): L ― LR ABS wheel-speed sensor (+): G ― LR ABS wheel-speed sensor (–): H • Is there continuity? | Yes | Repair or replace the wiring harness, then go to the next step.
No | Replace the ABS wheel-speed sensor, then go to the next step. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)
5 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Make sure to reconnect all disconnected connectors. • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • Start the engine and drive the vehicle at 45 km/h {28 mph} or more. • Are the same DTCs present? (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) | Yes | Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
No | DTC troubleshooting completed.