Civic L4-1668cc 1.7L SOHC MFI (2003)
connectors connected.
Is there battery voltage?
YES - Reprogram the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the
symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
NO - Repair open in the wire between the compressor clutch relay and the ECM/PCM.
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 4P 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.
NO - Repair open in the wire between the compressor clutch relay and the compressor clutch.
17. Disconnect the jumper wire.
18. Disconnect the compressor clutch 3P connector.
19. Check for continuity between the No.1 terminal of the compressor clutch relay 4P socket and the No.2 terminal of the compressor clutch 3P
connector.
Is there continuity?
YES - Check the compressor clutch clearance and the compressor clutch field coil.
NO - Repair open in the wire between the compressor clutch relay and the compressor clutch.
