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Home >> Jeep >> 2008 >> Liberty Limited, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0571 To P063A >> P0585-Speed Control Switch 1/2 Correlation >> Possible Causes
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Possible Causes

Possible Causes 
S/C SWITCH SIGNAL CIRCUITS SHORTED TO VOLTAGE
RESISTANCE IN THE S/C SWITCH SIGNAL CIRCUITS
RESISTANCE IN THE (V937) S/C RETURN CIRCUIT
S/C SWITCH SIGNAL CIRCUITS SHORTED TO THE (V937) S/C RETURN CIRCUIT
(V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V72) S/C SIGNAL 2 CIRCUIT
S/C SWITCH SIGNAL CIRCUITS SHORTED TO GROUND
SPEED CONTROL SWITCH
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.