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Possible Causes

Possible Causes 
(V71) S/C SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE
(V71) S/C SIGNAL 1 CIRCUIT SHORTED TO GROUND
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND
(V71) S/C SIGNAL 1 CIRCUIT SHORTED TO THE (V937) S/C SWITCH GROUND CIRCUIT
(V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C SWITCH GROUND CIRCUIT
(V71) S/C SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE
(V72) S/C SIGNAL 2 CIRCUIT OPEN OR HIGH RESISTANCE
(V937) S/C SWITCH GROUND CIRCUIT OPEN OR HIGH RESISTANCE
SPEED CONTROL SWITCH WIRING HARNESS
SPEED CONTROL SWITCH
CLOCKSPRING
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .