On-Vehicle Inspection

2AZ-FE ENGINE CONTROL SYSTEM: THROTTLE BODY: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT THROTTLE BODY ASSEMBLY
(a) Listen to the throttle control motor operating sounds.
(1) Turn the ignition switch to the ON position.
(2) When pressing the accelerator pedal position sensor lever, listen to the running motor. Make sure that no friction noise comes from the motor.
If friction noise exists, replace the throttle body assembly.
(b) Inspect the throttle position sensor.
(1) Connect Techstream to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Check that the MIL turns off.
(4) Turn the tester ON.
(5) Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position.
(6) Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of Throttle Position is within the specification.
Standard throttle valve opening percentage:
60% or more
If the percentage is less than 60%, replace the throttle body assembly.
NOTICE: When checking the throttle valve opening percentage, the transmission should be in neutral.