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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 212 (6.7L - DTCS P0299 To P0604 - 2500 & 3500) >> Diagnosis And Testing >> P0579-Speed Control Switch 1 Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(V37) S/C SWITCH SENSE 1 CIRCUIT SHORTED TO VOLTAGE
(V37) S/C SWITCH SENSE 1 CIRCUIT OPEN
(V937) SWITCH RETURN CIRCUIT OPEN
(V37) S/C SWITCH SENSE 1 CIRCUIT SHORTED TO GROUND
(V37) 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 - 6.7L  .