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:

How to proceed with troubleshooting
The intelligent tester can be used at steps 3, 7, 10, and 13. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS (a) Interview the customer to confirm the trouble. 3 DTC CHECK/CLEAR AND FREEZE FRAME DATA 4 PROBLEM SYMPTOM CONFIRMATION 5 PROBLEM SYMPTOM SIMULATION 6 SYMPTOM SI ...

Removal
HINT: Replace the RH side using the same procedures as for the LH side. 1. REMOVE FRONT WHEEL 2. REMOVE FRONT AXLE HUB LH NUT (See page DS- 5) 3. SEPARATE SPEED SENSOR FRONT LH (See page DS-5) 4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY LH (a) Remove the 2 bolts and separate the front ...

Sleep Operation Failure of Occupant Classification ECU
DTC B1796 Sleep Operation Failure of Occupant Classification ECU DESCRIPTION During sleep mode, the occupant classification ECU reads the condition of each sensor while the ignition switch is off. In this mode, if the occupant classification ECU detects an internal malfunction, DTC B1796 ...