DTC C1145 (11), C1155 (12), C1165 (13), C1175 (14)

BME040200000W03

Caution
• When attaching the tester lead to the ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) or the ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) harness connector, the SST (49 G066 001) must be used. (See ABS HU/CM INSPECTION.) (See ABS/TCS HU/CM INSPECTION.)

DTC

C1145 (11)

C1155 (12)

C1165 (13)

C1175 (14)

RF ABS wheel-speed sensor

LF ABS wheel-speed sensor

RR ABS wheel-speed sensor

LR ABS wheel-speed sensor

DETECTION CONDITION

• C1145 (11), C1155 (12), C1165 (13), C1175 (14): Abnormal input is detected.

POSSIBLE CAUSE

• Open or short to power circuit of ABS wheel-speed sensor(s) circuit
• ABS wheel-speed sensor(s) malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT ABS WHEEL-SPEED SENSOR CIRCUIT FOR OPEN
• Turn ignition key to OFF.
• Disconnect ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) connector.
• Connect SST (adapter harness) to ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) connector (harness side).
• Measure resistance between suspected sensor terminals of SST.
- RF ABS wheel-speed sensor: G-D
- LF ABS wheel-speed sensor: E-I
- RR ABS wheel-speed sensor: A-B
- LR ABS wheel-speed sensor: C-F
• Is resistance within 1.3-1.7 kilohm?
Yes
Go to next step.
No
Go to Step 3.
2
INSPECT ABS WHEEL-SPEED SENSOR CIRCUIT FOR SHORT TO POWER
• Turn ignition key to ON (engine OFF).
• Inspect voltage between suspected sensor terminal(s) of SST (adapter harness) and ground(s).
- RF ABS wheel-speed sensor: G, D
- LF ABS wheel-speed sensor: I, E
- RR ABS wheel-speed sensor: A, B
- LR ABS wheel-speed sensor: C, F
• Is there any B+?
Yes
Repair or replace harness for short to power circuit between ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) and ABS wheel-speed sensor(s), then go to Step 5.
No
Go to Step 5.
3
INSPECT ABS WHEEL-SPEED SENSOR
• Turn ignition key to OFF.
• Disconnect suspected sensor connector(s) and inspect resistance between sensor terminals (part side).
• Is resistance within 1.3-1.7 kilohm?
Yes
Go to next step.
No
Replace ABS wheel-speed sensor, then go to Step 5.
4
INSPECT ABS/TCS HU/CM (WITH TCS) or ABS HU/CM (WITHOUT TCS) TO ABS WHEEL-SPEED SENSOR CIRCUIT FOR OPEN
• Inspect for continuity between suspected sensor terminal(s) of SST and ABS wheel-speed sensor connector. (vehicle harness side)
- RF ABS wheel-speed sensor (+): G-1
- RF ABS wheel-speed sensor (-): D-2
- LF ABS wheel-speed sensor (+): I-1
- LF ABS wheel-speed sensor (-): E-2
- RR ABS wheel-speed sensor (+): A-1
- RR ABS wheel-speed sensor (-): B-2
- LR ABS wheel-speed sensor (+): C-1
- LR ABS wheel-speed sensor (-): F-2
• Is there continuity?
Yes
Repair or replace poor connections of ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) connector and/or ABS wheel-speed sensor connector(s), then go to next step.
No
Repair or replace harness for open circuits between ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS) and ABS wheel-speed sensor(s), then go to next step.
5
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory
• Is same DTC present?
Yes
Replace ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS), then go to next step.
No
Go to next step.
6
VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.