On-Vehicle Inspection

1. INSPECT THROTTLE BODY
a. Check that the throttle linkage moves smoothly.




b. Check the vacuum at each port. Start the engine. Check the vacuum with your finger.
- Start the engine.
- Check the vacuum with your finger.




2. INSPECT THROTTLE POSITION SENSOR
a. Disconnect the sensor connector.
b. Disconnect the vacuum hose from the throttle opener.
c. Apply vacuum to the throttle opener.




d. Using an ohmmeter, measure the resistance between each terminal.
e. Reconnect the vacuum hose to the throttle opener.
f. Reconnect the sensor connector.

3. INSPECT THROTTLE OPENER
a. Allow the engine to warm up to normal operating temperature.




b. Connect a TOYOTA hand-held tester or OBDII scan tool.
1. Remove the fuse cover on the instrument panel.
2. Connect a TOYOTA hand-held tester or OBDII scan tool to the DLC3.
3. Please refer to the TOYOTA hand-held tester or OBDII scan tool operator's manual for further details.
c. Check the idle speed.
idle speed: 700 ± 50 rpm




d. Check and adjust the throttle opener setting speed.
1. Disconnect the vacuum hose from the throttle opener, and plug the hose end.
2. Maintain the engine speed at 2,500 rpm.
3. Release the throttle valve.
4. Check that the throttle opener is set.
Throttle opener setting speed: 1,300 - 1,500 rpm (w/ Cooling fan OFF)




5. Using a 2.5 mm hexagon wrench, loosen the lock nut and adjust the throttle opener setting speed by turning the throttle opener adjusting screw. Tighten the lock nut.
6. Reconnect the vacuum hose to the throttle opener.

e. Disconnect the TOYOTA hand-held tester or OBDII scan tool.