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Home >> Jeep >> 2014 >> Cherokee Sport, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P0503 To P1047 >> Diagnosis And Testing >> P0685-ASD/Main Control Circuit >> Possible Causes
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Possible Causes

POSSIBLE CAUSES
(K51) ASD RELAY CONTROL CIRCUIT OPEN
(K51) ASD RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
(K51) ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
LOSS OF POWERTRAIN CONTROL MODULE POWERS OR GROUNDS
ASD RELAY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .