| 1. | Check the No. 11 (30A) fuse in the under-hood fuse/relay box, and the No. 30 (7.5A) fuse in the under-dash fuse/relay box. Is the fuse(s) OK? YES - Go to 2. NO - Replace the fuse(s) and recheck.n |
| 2. | Remove the radiator fan relay from the under-hood fuse/relay box, and test it. Is the relay OK? YES - Go to 3. NO - Replace the radiator fan relay.n |
| 3. | Measure the voltage between radiator fan relay 4P socket terminal No. 2 and body ground. Is there battery voltage? YES - Go to 4. NO - Replace the under-hood fuse/relay box.n |
| 4. | Connect radiator fan relay 4P socket terminal No. 1 and No. 2 with a jumper wire. Does the radiator fan run? YES - Go to 5. NO - Go to 6. |
| 5. | Disconnect the jumper, and turn the ignition switch ON (II). Check for voltage between radiator fan relay 4P socket terminal No. 3 and body ground. Is there battery voltage? YES - Go to 9. NO - Check for an open in the wire between the under-hood fuse/relay box and under-dash fuse/relay box.n |
| 6. | Disconnect the radiator fan motor 2P connector. |
| 7. | Check for continuity between radiator fan relay 4P socket terminal No. 1 and radiator fan motor 2P connector terminal No. 2. Is there continuity? YES - Go to 8. NO - Repair open in the wire between the under-hood fuse/relay box and radiator fan motor 2P connector terminal No. 2.n |
| 8. | Check for continuity between radiator fan motor 2P connector terminal No. 1 and body ground. Is there continuity? YES - Replace the radiator fan motor.n NO - Check for an open in the wire between radiator fan motor 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G301.n |
| 9. | Reinstall the radiator fan relay. |
| 10. | Disconnect the radiator fan switch 2P connector. |
| 11. | Connect radiater fan switch 2P connector terminal No. 1 and No. 2 with a jumper wire. Does the radiator fan run? YES - Replace the radiator fan switch.n NO - Go to 12. |
| 12. | Remove the jumper wire, and measure the voltage between radiator fan switch 2P connector terminal No. 2 and body ground. Is there battery voltage? YES - Check for an open in the wire between radiator fan switch 2P connector terminal No. 1 and body ground. If the wire is OK, check for a poor ground at G301.n NO - Repair open in the wire between radiator fan switch 2P connector terminal No. 2 and the under-hood fuse/relay box.n |