C0110

DTC C0110: Pump Motor Circuit Malfunction





Circuit Description
When the Electronic Brake Control Module (EBCM) grounds the pump motor relay, it closes and provides battery voltage to the pump motor if the valve relay is closed. The EBCM senses the voltage applied to the pump motor to verify motor operation.

Diagnosis
This DTC sets when the EBCM detects B (+) without motor relay activation or if the EBCM does not detect B (+) after motor relay activation.

Cause(s)
- There is a faulty terminal in pump motor connector.
- There is a faulty terminal in EBCM connector.
- There is a problem in the ABS wiring harness.
- There is high resistance in the chassis ground.
- The EBCM is defective.
- There is a problem in the wiring from pump motor connector to the motor.

Fail Action
ABS is disabled, and the ABS warning lamp is ON. EBD is disabled.

Test Description
Number(s) below refer to the step number(s) on the Diagnostic Table.
1. This step checks for connector damage.
2. This step checks for a poor ground connection.
3. This step checks for a possible problem with the motor connector at the EBCM unit.

Diagnostic Aids
It is very important to perform a thorough inspection of the wiring and the connectors. Failure to do so may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

Troubleshooting

Step 1-6:

Step 7-9: