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Home >> Jeep >> 2012 >> Liberty Limited, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> 3.7L - DTCS P0580 To P2099 >> Diagnosis And Testing >> P0591-Speed Control Switch 2 Performance >> Possible Causes
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Possible Causes

Possible Causes 
(V72) S/C SIGNAL 2 CIRCUIT OPEN
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE
(V937) S/C RETURN CIRCUIT OPEN
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C RETURN CIRCUIT
CLOCKSPRING
SPEED CONTROL SWITCH
POWERTRAIN CONTROL MODULE (PCM)

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