A/C Condenser Fan Circuit Troubleshooting

1.Check the No. 1 (20A) fuse in the under-hood fuse/relay box, and the No. 14 (10A) fuse in the under-dash fuse/relay box.

Are the fuses OK?


YES - Go to 2.


NO - Replace the fuse(s), and recheck.n


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

Is the relay OK?


YES - Go to 3.


NO - Replace the  condenser fan relay.n


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

 

Is there battery voltage?


YES - Go to 4.


NO - Replace the under-hood fuse/relay box.n

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

 

Does the condenser fan run?


YES - Go to 5.


NO - Go to 8.


5.Disconnect the jumper wire.

6.Turn the ignition switch ON (II).

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

 

Is there battery voltage?


YES - Replace the under-hood fuse/relay box.n


NO - Repair open in the wire between the No. 14 fuse in the under-dash fuse/relay box and the condenser fan relay socket in the under-hood fuse/relay box.n


8.Disconnect the jumper wire.

9.Disconnect the condenser fan 2P connector.

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

 

Is there continuity?


YES - Go to 11.


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


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

 

Is there continuity?


YES - Replace the condenser fan motor.n


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