Honda Accord: Radiator and A/C Condenser Fan Common Circuit Troubleshooting

NOTE: • Do not use this troubleshooting procedure if only one fan is inoperative, or if the A/C compressor is inoperative. Refer to the symptom troubleshooting index.

• Before doing symptom troubleshooting, check for powertrain DTCs (see page 11-3).

1. Check the No. 3 - 6 (MAIN FAN MTR) (30 A), No. 5 (20 A), and No. 21 (7.5 A) fuses in the under-hood fuse/relay box, and the No. 16 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Are the fuses OK? YES

-Go to step 2.

NO

-Replace the fuse(s), and recheck.

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

3. Measure the voltage between the under-hood fuse/relay box connector B (14P) terminal No. 7 and body ground.

UNDER-HOOD FUSE/RELAY BOX CONNECTOR B (14P)

Wire side of female terminals

Is there battery voltage? YES

-Go to step 4.

NO

-Replace the under-hood fuse/relay box (see page 22-85).

4. Turn the ignition switch to LOCK (0).

5. Jump the SCS line with the HDS.

NOTE: This step must be done to protect the engine control module/powertrain control module (ECM/PCM) from damage.

6. Disconnect ECM/PCM connector A (49P).

7. Connect the ECM/PCM connector A (49P) terminal No. 6 to body ground with a jumper wire.

ECM/PCM CONNECTOR A (49P)

Terminal side of female terminals

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

Do the A/C condenser and the radiator fans run? YES

-Check for loose wires or poor connections at ECM/PCM connector A (49P) terminal No. 6. If the connections are good, substitute a known-good ECM/PCM, and recheck. If the symptom/indication goes away, replace the original ECM/PCM (see page 11-204J.

NO-

Repair an open in the wire between the under-hood fuse/relay box and the ECM/PCM.