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 Sensor: Adjustments

CAUTION:
- The TP sensor is adjusted at the factory before shipment. Unnecessary adjustment will negatively affect the engine performance.
- Adjusting the TP sensor using the throttle adjusting screw (TAS) will negatively affect the engine performance.




1. Disconnect the PCM connector.
2. Connect the SST (EMS adapter harness) between the PCM and the vehicle harness connectors.
3. Verify that the throttle valve is at the CTP.
- If not adjusted, replace the TP sensor.

4. Loosen the attaching screws.
5. Turn the ignition switch to ON.
6. Verify that PCM terminal 3B voltage is within the specification, by adjusting the throttle position sensor.

Specification
CTP: 0.1 - 1.1 V
WOT: 2.8 - 4.5 V
(Verify that the voltage increase is directly proportioned to the throttle valve opening angle.)

7. Tighten the attaching screws.

Tightening torque: 1.6 - 2.3 N.m {16 - 24 kgf.cm, 14 - 20 in.lbf}