DTC C1145, C1155, C1165, C1175 [ABS]

id0402a7801100

DTC | C1145 C1155 C1165 C1175 | RF ABS wheel-speed sensor (open circuit) system LF ABS wheel-speed sensor (open circuit) system RR ABS wheel-speed sensor (open circuit) system LR ABS wheel-speed sensor (open circuit) system
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 ABS HU/CM terminal and the ABS wheel-speed sensor terminal: ― ABS HU/CM terminal M—RF ABS wheel-speed sensor terminal A ― ABS HU/CM terminal O—RF ABS wheel-speed sensor terminal B ― ABS HU/CM terminal F—LF ABS wheel-speed sensor terminal A ― ABS HU/CM terminal E—LF ABS wheel-speed sensor terminal B ― ABS HU/CM terminal I—RR ABS wheel-speed sensor terminal B ― ABS HU/CM terminal L—RR ABS wheel-speed sensor terminal A ― ABS HU/CM terminal G—LR ABS wheel-speed sensor terminal B ― ABS 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 3.
No | Go to the next step.
2 | INSPECT FOR OPEN CIRCUIT IN WIRING HARNESS BETWEEN ABS HU/CM AND ABS WHEEL-SPEED SENSOR • Turn the ignition switch to the LOCK position. • Disconnect the ABS 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 ABS 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 | 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.)
No | Repair or replace the wiring harness, then go to the next step.
3 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [ABS].) • Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more. • Are the same DTCs present? | Yes | Repeat the inspection from Step 1. If the malfunction recurs, replace the ABS HU/CM, then go to the next step. (See ABS HU/CM REMOVAL/INSTALLATION.)
No | Go to the next step.
4 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [ABS].)
No | DTC troubleshooting completed.