NOTE: Do not use this troubleshooting procedure if the fans are also inoperative, refer to the symptom troubleshooting index.
| 1. | Check the No. 9 (20A) fuse in the under-hood fuse/relay box, and the No. 30 (7.5A) 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. | Check the engine coolant temperature, throttle position, and idle speed (use the Honda PGM Tester or HDS PGM-FI data list if possible). Is the coolant temperature, throttle position, or idle speed out of nomal range? YES - Troubleshoot and repair the cause of the high engine coolant temperature, low idle, or excessively high throttle position.n NO - Go to 3. |
| 3. | Remove the compressor clutch relay from the under-hood fuse/relay box, and test it. Is the relay OK? YES - Go to 4. NO - Replace the compressor clutch relay.n |
| 4. | Measure the voltage between the No. 1 terminal of the compressor clutch relay 4P socket and body ground. Is there battery voltage? YES - Go to 5. NO - Replace the under-hood fuse/relay box.n |
| 5. | Connect the No. 1 and No. 2 terminals of the compressor clutch relay 4P socket with a jumper wire. Does the compressor clutch click ? YES - Go to 6. NO - Go to 14. |
| 6. | Disconnect the jumper wire. |
| 7. | Turn the ignition switch ON (II). |
| 8. | Measure the voltage between the No. 4 terminal of the compressor clutch relay 4P socket and body ground. Is there battery voltage? YES - Go to 9. NO - Repair open in the wire between the No. 30 fuse in the under-dash fuse/relay box and the compressor clutch relay.n |
| 9. | Turn the ignition switch OFF. |
| 10. | Reinstall the compressor clutch relay. |
| 11. | Make sure the A/C switch is OFF. |
| 12. | Turn the ignition switch ON (II). |
| 13. | Measure the voltage between the No. 18 terminal of ECM/PCM connector E (31P) and body ground with the ECM/PCM connectors connected. Is there battery voltage? YES - Check for loose wires or poor connections at ECM/PCM connector E (31P). If the connections are good, substitute a known-good ECM/PCM, and recheck. If the symptom/indication goes away, replace the original ECM/PCM.n NO - Repair open in the wire between the compressor clutch relay and the ECM/PCM.n |
| 14. | Disconnect the jumper wire. |
| 15. | Disconnect the compressor clutch 1P connector. |
| 16. | Check for continuity between the No. 2 terminal of the compressor clutch relay 4P socket and the No. 1 terminal of the compressor clutch 1P connector. Is there continuity? YES - Check the compressor clutch clearance, and the compressor clutch field coil. Repair as needed.n NO - Repair open in the wire between the compressor clutch relay and the compressor clutch.n |