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:
Precaution
1. NOTES FOR CLEARANCE SONAR SYSTEM
Under the following conditions, the sensor of the
clearance sonar may not operate properly:
Foreign matter such as snow or mud gets on the
sensor (the detection function will return to
normal when the foreign matter is no longer
prese ...
Catalyst monitor (active air-fuel ratio control
type)
(a) Preconditions
The monitor will not run unless:
The MIL is OFF.
(b) Drive Pattern
(1) Connect an intelligent tester.
(2) Turn the ignition switch to the ON position.
(3) Turn the tester or scan tool ON.
(4) Clear the DTCs.
(5) Start the engine and warm it up.
(6) Drive ...
Inspection
1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY
LO Operation Check
Connect the battery (+) to the terminal 1 (+1) of
the connector, the battery (-) to the terminal 5
(E) of the connector, and check that the motor
operates at low speed (LO).
HI Operation Check
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