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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> DTCS B234B To P0693 (TIPM) >> P0645-A/C Clutch Control Circuit Open -Diesel >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(C13) A/C CLUTCH RELAY CONTROL CIRCUIT SHORTED TO GROUND
(C13) A/C CLUTCH RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
(F343) FUSED ASD RELAY OUTPUT CIRCUIT 2 OPEN OR HIGH RESISTANCE
A/C CLUTCH RELAY
ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.  

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