DTC C1145, C1155, C1165, C1175 [YF (2.0L Zetec), AJ (3.0L Duratec)]

id0402008011a0

DTC

C1095

ABS wheel-speed sensor

MALFUNCTION

• C1145
- ABS wheel-speed sensor (RF) circuit malfunction
• C1155
- ABS wheel-speed sensor (LF) circuit malfunction
• C1165
- ABS wheel-speed sensor (RR) circuit malfunction
• C1175
- ABS wheel-speed sensor (LR) circuit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
INSPECT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch off.
• Disconnect the ABS HU/CM connectors.
• Turn the ignition switch to the ON position.
• Measure the resistance between the following ABS HU/CM terminals and body ground.
- C1145 (RF): terminal P and S
- C1155 (LF): terminal U and X
- C1165 (RR): terminal J and G
- C1175 (LR): terminal I and L
• Is there voltage?
Yes
• Repair or replace the suspect ABS wheel-speed sensor circuit, and clear DTC from the memory.
No
• Go to the next step.
2
INSPECT FOR SHORT TO GROUND
• Turn the ignition switch off.
• Measure the resistance between the following ABS HU/CM terminals and body ground.
- C1145 (RF): terminal P and S
- C1155 (LF): terminal U and X
- C1165 (RR): terminal J and G
- C1175 (LR): terminal I and L
• Is the resistance more than 10,000 ohms?
Yes
• Go to the next step.
No
• Repair or replace the suspect ABS wheel-speed sensor circuit, and clear DTC from the memory.
3
I INSPECT FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Disconnect the suspect ABS wheel-speed sensor connector.
• Measure the resistance between the following ABS HU/CM terminals and the ABS wheel-speed sensor connector.
- C1145 (RF): terminal P-A
- C1145 (RF): terminal S-B
- C1155 (LF): terminal U-A
- C1155 (LF): terminal X-B
- C1165 (RR): terminal J-A
- C1165 (RR): terminal G-B
- C1175 (LR): terminal I-A
- C1175 (LR): terminal L-B
• Is the resistance less than 5 ohms?
Yes
• Connect the ABS wheel-speed sensor connector and go to the next step.
No
• Repair or replace the suspect ABS wheel-speed sensor circuit and clear the DTC from the memory.
4
INSPECT ABS CM OUTPUT
• Connect the ABS HU/CM connector.
• Measure the voltage between the following ABS wheel-speed sensor terminals.
- C1145: ABS wheel-speed sensor (RF) connector terminal A-B
- C1155: ABS wheel-speed sensor (LF) connector terminal A-B
- C1165: ABS wheel-speed sensor (RR) connector terminal A-B
- C1175: ABS wheel-speed sensor (LR) connector terminal A-B
• Is the voltage more than 9 V?
Yes
• Replace the ABS wheel-speed sensor and clear the DTC from the memory.
No
• Replace the ABS CM and clear the DTC from the memory.