Radiator Fan Circuit Troubleshooting (Open)

Radiator Fan Circuit Troubleshooting (Open)

1. Test the radiator fan motor. Testing and Inspection

Is the radiator fan motor OK?
YES - Go to step 2.

NO - Replace the radiator fan motor.


2. Disconnect the radiator fan control (RFC) unit 3P connector.

3. Check for continuity between RFC unit 3P connector terminal No. 2 and body ground.

Is there continuity?
YES - Replace the RFC unit. RFC Unit Replacement

NO - Check for an open in the wire between RFC unit 3P connector terminal No. 2 and body ground. If the wire is OK, check for a poor ground at G301.