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Symptom: P0645-A/C CLUTCH RELAY CIRCUIT When Monitored and Set Condition: 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. One Trip Fault. POSSIBLE CAUSES A/C CLUTCH RELAY INTERMITTENT OPERATION INTERMITTENT CONDITION FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN INTEGRATED POWER MODULE A/C CLUTCH RELAY IPM FUSE & RELAY CENTER A/C CLUTCH RELAY CONTROL CKT OPEN A/C CLUTCH RELAY CONTROL CIRCUIT SHORT TO GROUND PCM TEST ACTION APPLICABILITY 1 Turn the ignition on. t, actuate the A/C Clutch Relay. Is the A/C Clutch Relay operating? All Yes → Go To 2 No → Go To 3 2 Turn the ignition on. t, actuate the A/C Clutch Relay. Wiggle the wiring harness from the A/C Clutch Relay to the PCM while the relay is All Yes → Repair as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 435 DRIVEABILITY - NGC |