DTC C1145, C1155, C1165, C1175 [DSC/RSC]

id0402b3801100

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 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/RSC HU/CM terminal and the ABS wheel-speed sensor terminal: ― DSC/RSC HU/CM terminal AE—RF ABS wheel-speed sensor terminal A ― DSC/RSC HU/CM terminal AB—RF ABS wheel-speed sensor terminal B ― DSC/RSC HU/CM terminal AG—LF ABS wheel-speed sensor terminal A ― DSC/RSC HU/CM terminal AD—LF ABS wheel-speed sensor terminal B ― DSC/RSC HU/CM terminal G—RR ABS wheel-speed sensor terminal B ― DSC/RSC HU/CM terminal J—RR ABS wheel-speed sensor terminal A ― DSC/RSC HU/CM terminal F—LR ABS wheel-speed sensor terminal B ― DSC/RSC HU/CM terminal I—LR ABS wheel-speed sensor terminal A • ABS wheel-speed sensor malfunction • DSC/RSC HU/CM 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: ― WSPD_LF ― WSPD_LR ― WSPD_RF ― WSPD_RR • 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 4.
No | Go to the next step.
2 | INSPECT FOR OPEN CIRCUIT IN WIRING HARNESS BETWEEN DSC/RSC HU/CM AND ABS WHEEL-SPEED SENSOR • Turn the ignition switch off. • Disconnect the DSC/RSC 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/RSC HU/CM connectors. ― RF ABS wheel-speed sensor: AE—A ― RF ABS wheel-speed sensor: AB—B ― LF ABS wheel-speed sensor: AG—A ― LF ABS wheel-speed sensor: AD—B ― RR ABS wheel-speed sensor: G—B ― RR ABS wheel-speed sensor: J—A ― LR ABS wheel-speed sensor: F—B ― LR ABS wheel-speed sensor: I—A • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to the next step.
3 | INSPECT ABS WHEEL-SPEED SENSOR FOR MALFUNCTION • Turn the ignition switch off. • Disconnect the ABS wheel-speed sensor connector which may have a malfunction. • Turn the ignition switch to the ON position. (engine off) • Measure the power supply voltage between the ABS wheel-speed sensor connector terminal A (vehicle wiring harness-side) and body ground on the ABS wheel-speed sensor which may have a malfunction. • Is the power supply voltage of the ABS wheel-speed sensor which may have a malfunction more than 10 V? | 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 [2WD].) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [4WD].)
No | Go to the next step.
4 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DSC/RSC].) • Are the same DTCs present? | Yes | Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
No | Go to the next step.
5 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DSC/RSC].)
No | DTC troubleshooting completed.