Radiator Fan Switch Circuit Troubleshooting (Short)
|1.||Remove the radiator fan relay from the under-hood fuse/relay box, and test it.|
Is the relay OK?
YES - Go to 2.
NO - Replace the radiator fan relay.n
|2.||Remove the radiator fan switch, and test it.|
Is the radiator fan switch OK?
YES - Go to 3.
NO - Replace the radiator fan switch.n
|3.||Disconnect the negative cable from the battery.|
|4.||Disconnect Engine Control Module (ECM)/Powertrain Control Module (PCM) 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 under-hood fuse/relay box.n
NO - Replace the under-hood fuse/relay box.n