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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DTCS P0533 To P0694 - Gas >> P0645-A/C Clutch Relay Circuit >> Possible Causes

Possible Causes

Possible Causes 
(C28) A/C CLUTCH CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
(C28) A/C CLUTCH CONTROL CIRCUIT OPEN
(C28) A/C CLUTCH CONTROL CIRCUIT SHORTED TO GROUND
TIPM
PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  . 

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