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:

Steering Pad Switch Circuit
DESCRIPTION This circuit sends an operation signal from the steering pad switch to the radio receiver. If there is an open in the circuit, the navigation system cannot be operated using the steering pad switch. If there is a short in the circuit, the resulting condition is the same as if ...

Television Display Power Source Circuit
DESCRIPTION This is the power source circuit to operate the television display assembly. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT TELEVISION DISPLAY ASSEMBLY Disconnect the connector from the television display assembly. Measure the resistance according to the value(s) ...

Multiplex Communication Circuit
DESCRIPTION INSPECTION PROCEDURE 1 GO TO CAN COMMUNICATION SYSTEM (a) Refer to the CAN communication system (See page CA- 7). (b) If the CAN communication system is operating normally, proceed to the next step. 2 GO TO MULTIPLEX COMMUNICATION SYSTEM (BEAN) (a) Refer to the multiplex com ...