Operation CHARM: Car repair manuals for everyone.

Test A: Shift and Torque Converter Clutch Solenoids

Pinpoint Tests - OSC Equipped Vehicle

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 component as required.

Shift Solenoids Pre-Diagnosis
Use this shift solenoid operation information when carrying out pinpoint Test A.

Solenoid Operation Chart:





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











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.








PINPOINT TEST A: SHIFT AND TORQUE CONVERTER CLUTCH SOLENOIDS

A1-A2:




A2-A5:




A6-A7:




A7-A8:




A8-A9: