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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0593-Speed Control Switch 2 Circuit High >> Code Description >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
S/C WIRING HARNESS OBSERVABLE PROBLEM
CLOCKSPRING
SPEED CONTROL ON/OFF SWITCH
(V38) S/C SWITCH 2 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(V38) S/C SWITCH 2 SIGNAL CIRCUIT OPEN PCM TO CLOCK SPRING
(V38) S/C SWITCH 2 SIGNAL CIRCUIT OPEN CLOCKSPRING TO S/C SWITCH
(V937) S/C SWITCH RETURN CIRCUIT OPEN CLOCKSPRING TO S/C SWITCH
(V937) S/C SWITCH RETURN CIRCUIT OPEN PCM TO CLOCKSPRING
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  .