Supra Liftback L6-2997cc 3.0L DOHC MFI Twin-Turbo (1997)
Dash pot setting speed: 2,300 ± 400 rpm
(d) Reconnect the control cables to the throttle body.
4. CHECK VTV OPERATION
(a) Maintain the engine speed at 3.500 rpm.
(b) Release the throttle valve and check that the engine returns to idle in a few seconds.
Throttle Opener
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CHECK IDLE SPEED
Idle speed: 650 ± 50 rpm
(Transmission in neutral position)
3. CHECK THROTTLE OPENER SETTING SPEED
(a) Disconnect the throttle opener vacuum hose from the throttle body and plug the throttle body port.
(b) Maintain the engine speed at 2.500 rpm.
(c) Release the throttle valve.
(d) Check that the throttle opener is set.
Throttle opener setting speed: 1,500 ± 200 rpm
(e) Adjust the throttle opener setting speed by turning the throttle opener adjusting screw.
(f) Reconnect the throttle opener vacuum hose to the throttle body.
