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.

FAIL-SAFE

•  Inhibits ABS, TCS, and DSC controls, and illuminates ABS warning light and DSC indicator light.
(If error is detected during ABS control, inhibits ABS control after finishing the control.)

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 off. • 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 off. • 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—A ― RR ABS wheel-speed sensor (–): L—B ― LR ABS wheel-speed sensor (+): G—A ― LR ABS wheel-speed sensor (–): H—B • 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.
FAIL-SAFE		• Inhibits ABS, TCS, and DSC controls, and illuminates ABS warning light and DSC indicator light. (If error is detected during ABS control, inhibits ABS control after finishing the control.)
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)