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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 551 (DTCS P0579 To P0633) >> Diagnosis And Testing >> P0591-Speed Control Switch 2 Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
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.