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Home >> Chrysler >> 2007 >> Pacifica Limited, FWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0573 To P0643 >> P0579-Speed Control Switch 1 Performance >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(V37) S/C SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
(V37) S/C SIGNAL 1 CIRCUIT SHORTED TO GROUND
(V37) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (K975) S/C SWITCH GROUND CIRCUIT
(V37) S/C SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE
(K975) S/C SWITCH GROUND CIRCUIT OPEN OR HIGH RESISTANCE
LEFT SPEED CONTROL SWITCH
RIGHT SPEED CONTROL SWITCH
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .