Throttle Position Sensor: Testing and Inspection

INSPECTION

On Car Inspection

1. Disconnect the throttle position sensor connector.
2. Apply vacuum to the throttle opener.
3. Using an ohmmeter, measure the resistance between each terminal.

With throttle valve fully closed:
resistance between terminals VTA and E2: 0.2 - 5.7 k ohms
resistance between terminals IDL and E2: 2.3 k ohms or less
With throttle valve fully open:
resistance between terminals VTA and E2: 2.0 - 10.2 k ohms
resistance between terminals IDL and E2: infinity
Always:
resistance between terminals VC and E2: 2.5 - 5.9 k ohms

4. Reconnect the throttle position sensor connector.

Off Car Inspection

1. Apply vacuum to the throttle opener.
2. Insert a feeler gauge between the throttle stop screw and stop lever.
3. Using an ohmmeter, measure the resistance between each terminal.

With throttle valve fully closed:
resistance between terminals VTA and E2: 0.2 - 5.7 k ohms
With throttle valve open 0.50 mm (0.020 in):
resistance between terminals IDL and E2: 2.3 k ohms or less
With throttle valve open 0.75 mm (0.030 in):
resistance between terminals IDL and E2: infinity
With throttle valve fully open:
resistance between terminals VTA and E2: 2.0 - 10.2 k ohms
Always:
resistance between terminals VC and E2: 2.5 - 5.9 k ohms

4. Adjust throttle position sensor if needed.