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Possible Causes

Possible Causes
TRANSMISSION CONTROL MODULE (TCM)

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



Possible Causes
LEVER SWITCH 1 SENSOR CIRCUIT OPEN, HIGH RESISTANCE, OR SHORTED TO GROUND
LEVER SWITCH 1 SENSOR CIRCUIT SHORTED TO VOLTAGE
LEVER SWITCH 1 SENSOR
TRANSMISSION CONTROL MODULE (TCM)

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