Radiator and Condenser Fans Circuit Troubleshooting B
Radiator and Condenser Fans Circuit Troubleshooting B1. Check the No. 57 (30A) fuse in the under-hood fuse/ relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Check for a short in the wire between the radiator fan relay, radiator fan motor and fan control relay, and condenser fan motor or a faulty fan motored
2. Remove the radiator fan relay from the under-hood fuse/relay box and test it.
Is the relay OK?
YES - Go to step 3.
NO - Replace the radiator fan relay.
3. Measure the voltage between radiator fan relay 4P socket terminal No. 1 and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Replace the under-hood fuse/relay box.
4. Connect a jumper wire between radiator fan relay 4P socket terminals No. 1 and No. 2.
Does the radiator fan run?
YES - Go to step 5.
NO - Go to step 10.
5. Disconnect the jumper wire, and turn the ignition switch ON (II).
6. Measure the voltage between radiator fan relay 4P socket terminal No. 3 and body ground.
Is there the battery voltage?
YES - Repair an open in the wire between the radiator fan relay and the A/C pressure switch.
NO - Go to step 7.
7. Measure the voltage between fan control module 8P connector terminal No. 1 and body ground.
Is there the battery voltage?
YES - Repair an open in the wire between fan control module terminal No. 1 and radiator fan relay 4P socket terminal No. 3.
NO - Go to step 8.
8. Disconnect the fan control module 8P connector.
9. Check for continuity between fan control module 8P connector terminal No. 1 and body ground.
Is there the continuity?
YES - Repair short in the wire between fan control module 8P connector terminal No. 1 and radiator fan relay 4P socket terminal No. 3. A short on the YEL wire may damage the fan control module. If the symptom is still present after, repairing the short, substitute a known-good fan control module, and recheck.
NO - Replace the fan control module.
10. Disconnect the radiator fan motor 2P connector.
11. Measure the voltage between fan motor 2P connector terminal No. 2 and body ground.
Is there battery voltage?
YES - Go to step 12.
NO - Repair an open in the wire between radiator fan relay 4P socket terminal No. 2 and radiator 2P connector terminal No. 2.
12. Disconnect the jumper wire.
13. Test the radiator fan motor.
Is the fan motor OK?
YES - Repair an open in the wire between radiator fan motor 2P connector terminal No. 1 and body ground G201.
NO - Replace the radiator fan motor.