Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Shift Solenoid: Testing and Inspection

Pinpoint Tests - Non OSC Equipped Vehicle

Special Tool(s) (Part 1):




Special Tool(s) (Part 2):




Digital Transmission Range (TR) Sensor Diagnosis Chart (Part 1):




Digital Transmission Range (TR) Sensor Diagnosis Chart (Part 2):





Shift Solenoid 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, and/or solenoid electrically stuck off and/or hydraulically stuck off.














Shift Solenoid Failure Mode Chart "Always On"
Failed ON due to powertrain control module (PCM) and/or vehicle wiring concerns; solenoid electrically or mechanically stuck on.