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

Throttle Position Sensor: Adjustments

Throttle Position Sensor Location:





1. Disconnect the throttle position sensor connector.

Idle Position Switch, Continuity Check:





2. Using jumper wires, connect an ohmmeter across terminals 3 (idle position switch) and 4 (sensor ground) of the connector.

Idle Switch Continuity Check, Set-up:





3. Insert a .065 mm feeler gauge between the fixed SAS and the throttle lever.

Idle Switch Check For Continuity:





4. Loosen the throttle position sensor mounting bolts and turn the TPS body fully counter clockwise.
5. Check for continuity across terminals 3 and 4. There should be continuity.

Idle Switch Check For No Continuity:





6. Slowly turn the TPS body clockwise until you reach a point that no longer has continuity across terminals 3 and 4.
7. Tighten the TPS mounting bolt at this point
8. Reconnect the throttle position sensor connector.