P0645 A/C Clutch Relay Circuit
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P-0645 A/C CLUTCH RELAY CIRCUIT
WHEN MONITORED
With the ignition key on and battery voltage greater than 10 volts.
SET CONDITION
An open or shorted condition is detected in the A/C clutch relay control circuit.
POSSIBLE CAUSES
- Fused ignition switch output circuit open
- A/C clutch relay resistance >= 100 ohms
- A/C clutch relay ckt wiring harn observable def
- A/C clutch relay control circuit open
- A/C clutch relay control circuit short to ground
- A/C clutch rly ckt wiring harn intermittent def
- PCM defective