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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Power Top Control Module ( PTCM) - Electrical Diagnostics) >> DTC Troubleshooting >> B2579-Convertible Top Switch Circuit Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(Q31) POWER TOP SWITCH MUX CIRCUIT OPEN
(Q999) POWER TOP SWITCH RETURN CIRCUIT OPEN
POWER TOP SWITCH
POWER TOP CONTROL MODULE (PTCM)

Always perform the Power Top System Pre-Diagnostic procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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