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)

Or, hide this message: temporarily or permanently

Transmission Position Sensor/Switch: Testing and Inspection


1. Disconnect cable end from select lever.
2. Disconnect inhibitor switch connector.






3. Check continuity in inhibitor switch circuits with select lever moved to each position.
4. Check that continuity does NOT exist when selector lever is in R, 3, 2, and 1 ranges.
5. Check continuity at equal points when the select lever is turned 1.5° in both directions from the N range.






6. If there is continuity in one direction but not the other or if there if there is continuity at unequal points, adjust the inhibitor and retest.