| 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 ECM/PCM connector B (24P). |
| 4. | 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 - Check that the terminals are firmly seated at the connectors. If OK, substitute a known-good Engine Control Module (ECM)/ Powertrain Control Module (PCM) and recheck.n |