P0645

Test 1 - 2:

Test 3 - 7:

Test 8:

SYMPTOM
P0645 - A/C CLUTCH RELAY CKT

WHEN MONITORED
With the ignition on. Battery voltage greater than 10.4 volts. A/C Switch on.

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

POSSIBLE CAUSES
- A/C clutch relay operation
- Fused ignition switch output circuit open
- Intelligent power module
- A/C clutch relay
- IPM fuse & relay center
- (C13) A/C clutch relay control CKT open
- (C13) A/C clutch relay control circuit short to ground
- PCM