Toyota 1 MZ–FE Manual page 265

1MZ–FE ENGINE – SFI SYSTEM
(b) Check the throttle opener setting speed.
Throttle opener setting speed:
900–1,950 rpm
If the throttle opener setting is not as specified, re–
place the throttle body.
(c) Stop the engine.
(d) Reconnect the vacuum hose to the throttle opener.
(e) Start the engine and check that the idle speed returns
to the correct speed.
EG2–265