A/C Condenser Fan Circuit Troubleshooting (With A/C)

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.

- Before performing symptom troubleshooting, check for powertrain DTCs: '00-05 models; '06-09 models. Initial Inspection and Diagnostic Overview

1. Check the No. 58 (20 A) fuse in the main under-hood fuse/relay box, and the No. 20 (7.5 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.


2. Remove the A/C condenser fan relay from the main 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 A/C condenser fan relay 4P socket terminal No. 1 and body ground.

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

NO - Replace the main under-hood fuse/relay box. Service and Repair






4. Connect A/C condenser fan relay 4P socket terminals No. 1 and No. 2 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 A/C condenser fan relay 4P socket terminal No. 3 and body ground.

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

NO - Repair open in the wire between the No. 20 (7.5 A) fuse in the under-dash fuse/relay box and the A/C condenser fan relay.






8. Disconnect the jumper wire.

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

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

Is there continuity?
YES - Go to step 11.

NO - Repair open in the wire between the A/C condenser fan relay and the A/C condenser fan.






11. Check for continuity between A/C condenser fan 2P connector terminal No. 1 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..