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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0507 To P0600 - NGC >> P0579-Speed Control Switch 1 Performance >> Possible Causes
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Possible Causes

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. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .