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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (5.7L - DTCS P0457 To P0633 - NGC - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0579-Speed Control Switch 1 Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(V71) S/C SWITCH SENSE 1 CIRCUIT SHORTED TO VOLTAGE
(V71) S/C SWITCH SENSE 1 CIRCUIT OPEN
(V937) SWITCH RETURN CIRCUIT OPEN
(V71) S/C SWITCH SENSE 1 CIRCUIT SHORTED TO GROUND
(V71) S/C SWITCH SENSE 1 CIRCUIT SHORTED TO THE (V937) SWITCH RETURN CIRCUIT
CLOCKSPRING
STEERING WHEEL JUMPER HARNESS
SPEED CONTROL SWITCH
POWERTRAIN CONTROL MODULE (PCM)

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