Shift Solenoid Testing Information

Pinpoint Tests - OSC Equipped Vehicles











Special Tool(s)

Any time an electrical connector or solenoid body is disconnected, inspect the connector for pin condition, corrosion and contamination. Also inspect the connector seal for damage. Clean, repair or install a new connector as required.

Shift Solenoids Pre-Diagnosis
Use the following shift solenoid operation information when carrying out Pinpoint Test A. Test A: Shift and Torque Converter Clutch Solenoids








a When a manual pull-in occurs above a calibrated speed the transmission will downshift from the higher gear until the vehicle speed drops below this calibrated speed.

EC =Electronically Controlled
HD =Hydraulically disabled

Solenoid Operation Chart





* No engine braking.





Shift Solenoid Failure Mode Chart "Always OW
Failed off due to powertrain control module and or vehicle wiring concerns, shift solenoid electrically or hydraulically stuck off.





* No engine braking.





* No engine braking.

Shift Solenoid Failure Mode Chart "Always On"
Failed on due to powertrain control module and or vehicle wiring concerns, shift solenoid electrically or hydraulically stuck on.