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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Transmission Position Sensor/Switch: Testing and Inspection




1. Raise and support vehicle.
2. Disconnect neutral switch electrical connector.
3. Connect circuit tester to terminals of switch.
4. On vehicles equipped with automatic transmission, start engine and run at idle, then apply brakes securely.
5. Ensure continuity when shift lever is in neutral and no continuity when shift lever is in any other position.