Throttle Position Sensor: Testing and Inspection

THROTTLE POSITION SENSOR
Inspection-closed throttle position switch
1. Turn the ignition switch OFF and set the throttle valve to closed throttle position.
2. Disconnect the throttle position sensor connector.

View: Test Specifications:

3. Check continuity of the throttle position sensor terminals A and B.
4. If not as specified, adjust the throttle position sensor.

Use A 0.4 mm (0.016 in.) Feeler Gauge:

5. Insert a feeler gauge 0.4 mm (O.016 in) between the stopper and the throttle lever.
6. Verify that NO continuity exists between throttle position sensor terminals A and B.
7. If continuity exists adjust the throttle position sensor.

Inspection-Throttle Valve Opening (TVO) Sensor-Variable Resistor
1. Remove the engine control module (ECM).

Connect Special Service Tools As Shown:

2. Connect the special service tools (SST)s (Engine Signal Monitor and Adapter Harness) to the ECM.
3. Set the SST (Engine Signal Monitor) to position 2M.
4. Turn the ignition switch ON.
5. Rotate the throttle link by hand and verify that voltage is within the specification.

View: Test Specifications:

6. If not as specified, adjust the throttle position sensor.