NOTE: Before beginning this troubleshooting procedure, refer to the symptom troubleshooting index.

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

Is the relay OK?

YES | - | Go to Step 2 .
NO | - | Replace the radiator fan relay .■

1. 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 .■

1. Disconnect the under-hood fuse relay box 20P connector.

1. Check for continuity between radiator fan switch 2P connector terminal No. 2 and body ground.

Is there continuity?

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