## A/C Compressor Clutch Circuit Troubleshooting

1. | Check the No. 11 (30A) fuse in the under-hood fuse/relay box, and the No. 22 (30A) 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 (use the Honda PGM Tester PGM-FI data list if possible). Is the coolant temperature above nomal? YES - Troubleshoot and repair the cause of the high engine coolant temperature.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. 2 terminal of the compressor clutch relay 5P 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 5P 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. 5 terminal of the compressor clutch relay 5P socket and body ground. Is there battery voltage? YES - Go to 9.n NO - Repair open in the wire between the No. 22 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. 1 terminal of the compressor clutch relay 5P socket and the No. 1 terminal of the compressor clutch 1P connector. Is there continuity? YES - Check the compressor clutch clearance, the thermal protector, and the compressor clutch field coil.n NO - Repair open in the wire between the compressor clutch relay and the compressor clutch.n