Toyota Sienna Service Manual: On-vehicle inspection

Toyota Sienna Service Manual / Engine / 2Gr-fe engine control system / Sfi system / Throttle body / On-vehicle inspection

1. INSPECT THROTTLE BODY

(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.

(b) Inspect the throttle position sensor.

INSPECT THROTTLE BODY

(1) Connect the intelligent tester to the DLC3.

(2) Turn the ignition switch to the ON position.

(3) Check that the MIL turns off.

(4) Under CURRENT DATA, the throttle valve opening percentage (THROTTLE POS) should be within the standard range below.

Standard throttle valve opening percentage: 60% or more If the percentage is less than 60%, replace the throttle body.

NOTICE: When checking the throttle valve opening percentage, the transmission should be in neutral.

Removal

1. Remove windshield wiper motor assembly hint: (see page ww-4) 2. Remove front outer cowl top panel subassembly (see page em-27) 3. Drain engine coolant (see page co-6) 4. Remove v-bank cover s ...

Other materials:

Yaw rate sensor check (when using intelligent tester)
(a) Check the output of the yaw rate sensor. (1) Move the shift lever to the D position, drive the vehicle at a speed of approximately 5 km/h (3 mph), and turn the steering wheel either to the left or right 90° or more until the vehicle makes a 180° turn. (2) Stop the vehicle and mov ...

Air-fuel ratio (a/f) and heated oxygen (ho2) sensor heater monitors (front a/f and rear ho2 sensor type)
(a) Preconditions The monitor will not run unless: The MIL is OFF. (b) Drive Pattern (1) Connect an intelligent tester to the DLC3. (2) Turn the ignition switch to the ON position. (3) Clear the DTCs. (4) Start the engine. (5) Allow the engine to idle for 10 minutes or more. ...

DTC check / clear
1. DTC CHECK HINT: When DTC B1150/23 is detected as a result of troubleshooting for "Airbag System", perform troubleshooting for the Occupant Classification System. Check the DTCs. Connect the intelligent tester to the DLC3 Turn the ignition switch to ...