Idle Speed/Throttle Actuator - Mechanical: Testing and Inspection

THROTTLE OPENER INSPECTION

(a) Allow the engine to warm up to normal operating temperature.
(b) Check the idle speed.

Idle speed:
650 - 750 rpm





(c) Disconnect the vacuum hose from the throttle opener and plug the hose end.
(d) Check the throttle opener setting speed.

Throttle opener setting speed:
1,200 - 1,500 rpm

If the throttle opener setting is not as specified, replace the throttle body.
(e) Stop the engine
(f) Reconnect the vacuum hose to the throttle opener.
(g) Start the engine and check that the idle speed returns to the correct speed.
(h) Disconnect TOYOTA hand-held tester or OBD II scan tool.