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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (2.4L Engine - DTCS PO509 To P0850) >> Diagnosis And Testing >> P0688-Auto Shutdown Relay Sense Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(A14) FUSED B+ CIRCUITS
(K342) ASD RELAY OUTPUT CIRCUIT(S) OPEN
ASD RELAY
PCM

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

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