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Home >> Jeep >> 2007 >> Grand Cherokee Laredo, 3.0 M >> Repair and Diagnosis >> Engine Performance >> System >> Diesel - DTCS P0591 To P0676 >> P0645-A/C Clutch Control Circuit Open >> 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
(A15) FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
A/C CLUTCH RELAY
ENGINE CONTROL MODULE (ECM)

Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .