FixVault

Possible Causes

Possible Causes 
(T73) 3-4 SOLENOID CONTROL CIRCUIT OPEN
(T73) 3-4 SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
(T73) 3-4 SOLENOID CONTROL CIRCUIT SHORTED TO ANOTHER CIRCUIT
3-4 SOLENOID
TRANSMISSION CONTROL MODULE (TCM)

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .