P0645

Test 1 - 3:

Test 4 - 6:

SYMPTOM
P0645-A/C CLUTCH RELAY CIRCUIT

WHEN MONITORED
With the ignition key in the run position and battery voltage above 10.4 volts.

SET CONDITION
An open or shorted condition is detected in the A/C clutch relay control circuit.

POSSIBLE CAUSES
- A/C clutch relay operation
- A/C clutch relay
- (F12) fused ignition switch output circuit open
- (C13) A/C clutch relay control circuit open
- (C13) A/C clutch relay control circuit shorted to ground
- PCM