LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 551 (DTCS P0579 To P0633) >> Diagnosis And Testing >> P0579-Speed Control Switch 1 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 
(V371) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(V71) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(V371) S/C SWITCH NO.1 SIGNAL CIRCUIT OPEN
(V71) S/C SWITCH NO.1 SIGNAL CIRCUIT OPEN
(V397) SWITCH RETURN CIRCUIT OPEN
(V937) SWITCH RETURN CIRCUIT OPEN
(V371) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO GROUND
(V71) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO GROUND
(V371) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO THE (V397) SWITCH RETURN CIRCUIT
(V71) S/C SWITCH NO.1 SIGNAL CIRCUIT SHORTED TO THE (V937) SWITCH RETURN CIRCUIT
STEERING COLUMN CONTROL MODULE
SPEED CONTROL SWITCH
PCM

Always perform  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  before proceeding.