Toyota Sienna Service Manual: 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.
(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. |
Throttle body
COMPONENTS
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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:
On-vehicle cleaning
1. INSPECT RADIATOR ASSEMBLY
(a) Check that the radiator and condenser are not
blocked with leaves, dirt, or insects. Clean the hose
connections.
If the fins are blocked, wash them with water or a
steam cleaner.
NOTICE:
If the distance between the steam cleaner and
core is ...
Problem symptoms table
Use the table below to find the cause of the problem. The
numbers indicate the priority of the likely cause of the
problem. Check each part in order. If necessary, replace
these parts.
Front A/C:
Rear A/C:
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Adjustment procedure
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel horizontally
and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
...
