A/C Condenser Fan Circuit Troubleshooting

A/C Condenser Fan Circuit Troubleshooting

NOTE: Do not use this troubleshooting procedure if the radiator fan and/or the A/C compressor is inoperative. Refer to the symptom troubleshooting index.

1. Check the No. 1 (30 A) fuse in the under-hood fuse/relay box, and the No. 14 (10 A) fuse in the under-dash fuse/relay box.

Are the fuses OK?
YES - Go to step 2.

NO - Replace the fuse(s), and recheck. If either fuse blows again, check for a short in the No. 1 (30 A) or No. 14 (10 A) fuse circuits.


2. Remove the A/C condenser fan relay from the under-hood fuse/relay box, and test it. Testing and Inspection

Is the relay OK?
YES - Go to step 3.

NO - Replace the A/C condenser fan relay.


3. Measure the voltage between terminal No. 2 of the A/C condenser fan relay 4P socket and body ground.

Is there battery voltage?
YES - Go to step 4.

NO - Replace the under-hood fuse/relay box. Under-Hood Fuse/Relay Box Removal and Installation






4. Connect terminals No. 1 and No. 2 of the A/C condenser fan relay 4P socket with a jumper wire.

Does the A/C condenser fan run?
YES - Go to step 5.

NO - Go to step 8.






5. Disconnect the jumper wire.

6. Turn the ignition switch to ON (II).

7. Measure the voltage between terminal No. 3 of the A/C condenser fan relay 4P socket and body ground.

Is there battery voltage?
YES - Replace the under-hood fuse/relay box.

NO - Repair open in the BLK/YEL wire between the No. 14 (10 A) fuse in the under-dash fuse/relay box and the A/C condenser fan relay socket in the under-hood fuse/relay box.






8. Disconnect the jumper wire.

9. Disconnect the A/C condenser fan 2P connector.

10. Check for continuity between terminal No. 1 of the A/C condenser fan relay 4P socket and terminal No. 2 of the A/C condenser fan 2P connector.

Is there continuity?
YES - Go to step 11.

NO - Repair open in the wire between the A/C condenser fan relay socket in the under-hood fuse/relay box and the A/C condenser fan.






11. Check for continuity between terminal No. 1 of the A/C condenser fan 2P connector and body ground.

Is there continuity?
YES - Replace the A/C condenser fan motor. Service and Repair

NO - Check for an open in the wire between the A/C condenser fan and body ground. If the wire is OK, check for poor body ground at G201.