Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 2005 >> Grand Cherokee Laredo, 3.7 K, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0579 To P0633 >> Diagnosis And Testing >> P0591-Speed Control Switch 2 Performance >> Possible Causes

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  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  before proceeding.