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 (see GENERAL TROUBLESHOOTING INFORMATION ).

Check the No. 1 (30 A) fuse in the underhood fuse/relay box, and the No. 14 (10 A) fuse in the under-dash fuse/relay box.
Are the fuses OK?
1. YES - Go to step 2.
2. NO - Replace the fuse(s), and recheck.
Remove the A/C condenser fan relay from the underhood fuse/relay box, and test it (see POWER RELAY TEST ).
Is the relay OK?
1. YES - Go to step 3.
2. NO - Replace the A/C condenser fan relay.
Measure the voltage between the No. 2 terminal of the A/C condenser fan relay 4P socket and body ground.

Fig 1: Measuring Voltage Between Terminal Of A/C Condenser Fan Relay 4P Socket And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?
1. YES - Go to step 4.
2. NO - Replace the underhood fuse/relay box.
Connect the No. 1 and No. 2 terminals of the A/C condenser fan relay 4P socket with a jumper wire.

Fig 2: Connecting Terminals Of A/C Condenser Fan Relay 4P Socket With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Does the A/C condenser fan run?
1. YES - Go to step 5.
2. NO - Go to step 8.
Disconnect the jumper wire.
Turn the ignition switch ON (II).
Measure the voltage between the No. 3 terminal of the A/C condenser fan relay 4P socket and body ground.

Fig 3: Measuring Voltage Between Terminal Of A/C Condenser Fan Relay 4P Socket And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?
1. YES - Replace the underhood fuse/relay box.
2. 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.
Disconnect the jumper wire.
Disconnect the A/C condenser fan 2P connector.
Check for continuity between the No. 1 terminal of the A/C condenser fan relay 4P socket and the No. 2 terminal of the A/C condenser fan 2P connector.

Fig 4: Checking Continuity Between A/C Condenser Fan Relay 4P Socket A/C Condenser Fan 2P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Go to step 11.
2. NO - Repair open in the wire between the A/C condenser fan relay and the A/C condenser fan.
Check for continuity between the No. 1 terminal of the A/C condenser fan 2P connector and body ground.

Fig 5: Checking Continuity Between Terminal Of A/C Condenser Fan 2P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Replace the A/C condenser fan motor.
2. 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 ground at G302.