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Home >> Jeep >> 2007 >> Commander Overland, RWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0581 To P0643 >> P0591-Speed Control Switch 2 Performance >> Possible Causes
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Possible Causes

Possible Causes 
(V372) S/C SWITCH NO. 2 SIGNAL CIRCUIT OPEN
(V72) S/C SWITCH NO. 2 SIGNAL CIRCUIT OPEN
(V372) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(V72) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(V397) SWITCH RETURN CIRCUIT OPEN
(V937) SWITCH RETURN CIRCUIT OPEN
(V372) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO GROUND
(V72) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO GROUND
(V372) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO THE (V397) SWITCH RETURN CIRCUIT
(V72) S/C SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO THE (V937) SWITCH RETURN CIRCUIT
SPEED CONTROL SWITCH
SCCM
PCM

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