P0645

Test 1:

Tests 2 - 5:

Tests 6 - 7:

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
- Intermittent condition
- Fused ignition switch output circuit open
- A/C clutch relay
- A/C clutch relay control circuit short to ground
- A/C clutch relay control circuit open
- PCM