DTC C1145, C1155, C1165, C1175 [ABS]

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DTC C1145, C1155, C1165, C1175 [ABS]

B3E040243000W07

DTC | C1145, C1155, C1165, C1175 | ABS wheel-speed sensor
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 terminals and ABS wheel-speed sensor terminals:

  - ABS HU/CM terminal Q-RF ABS wheel-speed sensor terminal A
  - ABS HU/CM terminal O-RF ABS wheel-speed sensor terminal B
  - ABS HU/CM terminal I-LF ABS wheel-speed sensor terminal A
  - ABS HU/CM terminal K-LF ABS wheel-speed sensor terminal B
  - ABS HU/CM terminal E-RR ABS wheel-speed sensor terminal A
  - ABS HU/CM terminal C-RR ABS wheel-speed sensor terminal B
  - ABS HU/CM terminal U-LR ABS wheel-speed sensor terminal A
  - ABS HU/CM terminal W-LR ABS wheel-speed sensor terminal B

• ABS wheel-speed sensor malfunction
• Poor connection at connectors (female terminal)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---

1

INSPECT ABS WHEEL-SPEED SENSOR FOR SHORT TO GROUND
• Turn the ignition switch off.
• Disconnect the ABS HU/CM connectors.
• Inspect for continuity between the following ABS HU/CM connector terminals (vehicle harness-side) and body ground:

  - RF ABS wheel-speed sensor(+): Q
  - RF ABS wheel-speed sensor(-): O
  - LF ABS wheel-speed sensor(+): I
  - LF ABS wheel-speed sensor(-): K
  - RR ABS wheel-speed sensor(+): E
  - RR ABS wheel-speed sensor(-): C
  - LR ABS wheel-speed sensor(+): U
  - LR ABS wheel-speed sensor(-): W

• Is there continuity?

Yes

Go to the next step.

No | Go to Step 3.

2

INSPECT ABS WHEEL-SPEED SENSOR WIRING HARNESS FOR SHORT TO GROUND
• Disconnect the ABS wheel-speed sensor connectors.
• Inspect for continuity between the following ABS HU/CM connector terminals (vehicle harness-side) and body ground:

  - RF ABS wheel-speed sensor(+): Q
  - RF ABS wheel-speed sensor(-): O
  - LF ABS wheel-speed sensor(+): I
  - LF ABS wheel-speed sensor(-): K
  - RR ABS wheel-speed sensor(+): E
  - RR ABS wheel-speed sensor(-): C
  - LR ABS wheel-speed sensor(+): U
  - LR ABS wheel-speed sensor(-): W

• Is there continuity?

Yes

Repair or replace the wiring harness, then go to Step 4.

No | Replace the ABS wheel-speed sensor, then go to Step 4. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

3

INSPECT FOR OPEN CIRCUIT IN ABS WHEEL-SPEED SENSOR WIRING HARNESS
• Inspect for continuity between the ABS HU/CM connectors (vehicle harness-side) and the following vehicle harness-side connector terminals of the ABS wheel-speed sensors:

  - RF ABS wheel-speed sensor(+): Q-A
  - RF ABS wheel-speed sensor(-): O-B
  - LF ABS wheel-speed sensor(+): I-A
  - LF ABS wheel-speed sensor(-): K-B
  - RR ABS wheel-speed sensor(+): E-A
  - RR ABS wheel-speed sensor(-): C-B
  - LR ABS wheel-speed sensor(+): U-A
  - LR ABS wheel-speed sensor(-): W-B

• Is there continuity?

Yes

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.)
4 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Reconnect all disconnected connectors. • Clear the DTCs from the memory. (See Clearing DTCs Procedures.) • 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.
5 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See DTC Table.)
No | DTC troubleshooting completed.