Radiator Fan Switch Circuit Troubleshooting (Short)

Radiator Fan Switch Circuit Troubleshooting (Short)

'00 - 05 models

1. Remove the radiator fan relay from the main under hood fuse/relay box, and test it.

Is the relay OK?

YES - Go to step 2.

NO - Replace the radiator fan relay.

2. Remove the radiator fan switch, and test it.

Is the radiator fan switch OK?

YES - Go to step 3.

NO - Replace the radiator fan switch.

3. Disconnect engine control module (ECM) connector A (32P) and the under-hood fuse/relay box 16P connector.
4. Check for continuity between the radiator fan switch 2P connector terminal No. 2 and body ground.





Is there continuity?

YES - Repair short in the wire between the radiator fan switch 2P connector terminal No. 2 and main under-hood fuse/relay box.

NO - Replace the main under-hood fuse/relay box.