Circuit Shorted Troubleshooting

Troubleshooting (Short)

NOTE: After troubleshooting, perform the engine control module (ECM) idle learn procedure.

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 fen relay.
2. Remove the radiator fan switch, and test it.
Is the radiator fan switch OK?
YES - o to step 3.
NO - Replace the radiator fan switch.
3. Disconnect the battery negative cable from the battery.
4. Disconnect engine control module (ECM) connector B (24P) and the under-hood fuse relay box 14P connector.





5. Check for continuity between the No. 2 terminal of the radiator fan switch 2P connector and body ground.
Is there continuity?
YES - Repair short in the wire between the radiator fan switch 2P connector terminal No. 2 and underhood fuse/relay box.
NO - Replace the under-hood fuse/relay box.