Contents: Examination ⇓ Resistance: 0.7–3.0 kOhm ⇓
The throttle position sensor is a variable resistor that rotates with the throttle shaft and provides information to the ECM to determine when the throttle is closed, fully open, or in between. The sensor is rigidly connected to the throttle shaft. Depending on the position of the throttle, the resistance of the sensor changes.
Examination
1. Disconnect the connector from the throttle position sensor.
2. Measure the resistance between terminals 2 (ground) and 3 (power) of the sensor connector.
Resistance: 0.7–3.0 kOhm
3. Connect an ohmmeter to terminals 2 (ground) and 3 (sensor output) of the sensor connector.
4. Slowly open the throttle valve and make sure that the sensor resistance changes smoothly in proportion to the throttle valve opening.
5. If the sensor resistance differs from the required value or changes abruptly, replace the sensor.
Tightening torque: 1.5–2.5 Nm