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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Throttle Position (TP) Sensor Adjust

TPS Adjustment Check:






The TPS is not adjustable. The the reading should be be checked only when the TPS sensor or throttle body has been replaced or minimum idle air rate has been adjusted. To check the TPS reading connect a digital volt ohmmeter to the dark blue and black wires in the sensor harness. Take reading with key "ON" engine "OFF". A scan tool may also be used for this test.