Diesel Data: Automotive Repair

Component Inspection




SENSOR INSPECTION
1. Disconnect the throttle position sensor connector.
2. Measure resistance between terminal 2 (sensor ground) and terminal 3 (sensor power).
Standard value 0.7 - 3.0 kOhms
When idling 2.3 - 3.4 kOhms

3. Connect an ohmmeter between terminal 3 (sensor ground) and terminal 1 (sensor output).
4. Operate the throttle valve slowly from the idle position to the full open position and check that the resistance changes smoothly in proportion to the throttle valve opening angle.
5. If the resistance is out of specification, or fails to change smoothly, replace the throttle position sensor.

Tightening torque
Throttle position sensor 1.5 - 2.5 Nm (15 - 25 kg.cm, 1.1 - 1.8 lb.ft)