Toyota Sienna Service Manual: On-vehicle inspection
1. INSPECT THROTTLE BODY
- Listen to the throttle control motor operating sounds.
- Turn the ignition switch to the ON position.
- 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.
- Inspect the throttle position sensor.
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Check that the MIL turns off.
- 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.
Components
...
Removal
1. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY
2. REMOVE FRONT OUTER COWL TOP PANEL SUBASSEMBLY
3. DRAIN ENGINE COOLANT
4. REMOVE V-BANK COVER SUB-ASSEMBLY
5. REMOVE NO. 2 AIR CLEANER INLET
6. REMOVE ...
Other materials:
Reassembly
1. INSTALL PARKING BRAKE SWITCH ASSEMBLY
(a) Install the parking brake switch to the parking brake
pedal with the screw.
2. INSTALL PARKING BRAKE CABLE ASSEMBLY NO.1
(a) Connect the parking brake cable No. 1 to the
parking brake cable equalizer.
(b) Install the parking brake cable No. 1 with ...
Brake Switch "A" Circuit
DTC P0571 Brake Switch "A" Circuit
DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to
the ECM. When the ECM
receives this signal, it cancels the cruise control. The fail-safe function
operates to enable normal driving
even if there is a malfuncti ...
Reassembly
NOTICE:
Before installation, coat the parts indicated by arrows
with power steering fluid (See page PS-7).
1. INSTALL VANE PUMP HOUSING OIL SEAL
(a) Coat a new vane pump housing oil seal lip with
power steering fluid.
(b) Using SST and a press, install the vane pump
housing oil seal until i ...