On-Vehicle Inspection

1NZ-FE ENGINE CONTROL SYSTEM: THROTTLE BODY: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY
(a) Check the throttle control motor operating sounds.
(1) Turn the ignition switch to ON.
(2) When pressing the accelerator pedal, listen for sounds of the motor running. Make sure no friction noise comes from the motor.
(b) Check the throttle position sensor.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Select the following menu items:
Powertrain / Engine and ECT / Data List / Throttle Pos. Sensor Output.
(4) Depress the accelerator pedal. When the throttle valve is fully open, check that the value of the "Throttle Pos. Sensor Output" is within the specifications.
Standard throttle valve opening percentage:
40 to 98%
NOTE: When checking the standard throttle valve opening percentage, the shift lever should be in the neutral position.

If the percentage is less than 40 to 98%, replace the throttle with motor body assembly.