Throttle Position Sensor: Testing and Inspection

THROTTLE POSITION SENSOR




With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Remove the vacuum hose connected to the throttle opener.
4. Connect suitable vacuum hose to the vacuum pump and the opener.
5. Apply vacuum [more than -40.0 kPa (-300 mmHg, -11.81 inHg)] until the throttle drum becomes free from the rod of the throttle opener.
6. Turn ignition switch ON.




7. Select "DATA MONITOR" mode with CONSULT-II.
8. Check voltage of "THRTL POS SEN" under the following conditions.






NOTE: Voltage measurement must be made with throttle position sensor installed in vehicle.

If NG, adjust closed throttle position switch. Refer to "Basic Inspection".
9. If it is impossible to adjust closed throttle position switch in "Basic Inspection", replace throttle position sensor.




Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Remove the vacuum hose connected to the throttle opener.
4. Connect suitable vacuum hose to the vacuum pump and the opener.
5. Apply vacuum [more than -40.0 kPa (-300 mmHg, -11.81 inHg)] until the throttle drum becomes free from the rod of the throttle opener.
6. Turn ignition switch ON.




7. Check voltage between ECM terminal 92 (Throttle position sensor signal) and ground under the following conditions.






NOTE: Voltage measurement must be made with throttle position sensor installed in vehicle.

If NG, adjust closed throttle position switch. Refer to Basic Inspection".
8. If it is impossible to adjust closed throttle position switch in "Basic Inspection", replace throttle position sensor.