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.
1		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.
2		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.
3		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.
4		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.)
5		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)].)
6		No	DTC troubleshooting completed.

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)