P0645

Tests 1 - 2:

Tests 3 - 6:

Tests 7 - 8:

SYMPTOM
P0645-A/C CLUTCH RELAY CIRCUIT

WHEN MONITORED
With the ignition ON. Battery voltage greater than 10 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 intermittent operation
- Intermittent condition
- Fused ignition switch output circuit
- A/C clutch relay resistance
- A/C clutch relay control circuit open
- A/C clutch relay control circuit short to ground
- PCM