TESTING

See Figures 1 through 6

  1. Unplug the TP sensor connector.
    2.  
  2. Insert a thickness gauge between the throttle stop screw and the stop lever.
    3.  
  3. Using an ohmmeter, measure the resistance between each terminal. Compare the readings to the chart.
    4.  



Click image to see an enlarged view

Fig. Fig. 1: Fabricate an angle gauge as shown



Click image to see an enlarged view

Fig. Fig. 2: Check that the throttle position sensor performs as indicated-4A-FE engines



Click image to see an enlarged view

Fig. Fig. 3: Check for resistance between the terminals indicated-4A-GE engines



Click image to see an enlarged view

Fig. Fig. 4: Throttle position sensor resistance chart-1992-94 models



Click image to see an enlarged view

Fig. Fig. 5: The throttle position sensor should perform as indicated-1995-97 models



Click image to see an enlarged view

Fig. Fig. 6: If necessary, loosen the screws and adjust the throttle position sensor

REMOVAL & INSTALLATION

1988-91 4A-FE Engines
  1. Secure the throttle valve opening at approximately 45 degrees. Be careful not to damage any components.
    2.  
  2. Remove the two screws and the sensor.
    3.  

To install:
  1. Place the TPS over the throttle valve shaft. Do not turn the TPS when it is being installed.
    2.  
  2. Temporarily install the two screws. Remove the device securing the throttle valve angle.
    3.  
  3. Adjust the throttle position sensor (refer to ).
    4.  

Except 1988-91 4A-FE Engines
  1. Remove the two screws and the TPS.
    2.  
  2. To install, place the sensor on the throttle body. Turn the sensor clockwise until the ohmmeter defects, then secure with the two screws.
    3.  
  3. Adjust the TPS (refer to ).
    4.