Toyota Sienna Service Manual: Inspection
1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY
(a) Check the vacuum check valve.
(1) Slide the clip and disconnect the vacuum hose.
(2) Remove the vacuum check valve.
(3) Check that there is ventilation from the booster to the engine, and no ventilation from the engine to the booster.
(4) If any fault is found, replace the vacuum check valve.
Removal
NOTICE:
Do not adjust the brake booster push rod.
Do not change the combination of the diameter
converting unit and brake.
1. REMOVE FRONT WHEEL
2. DRAIN BRAKE FLUID
NOTICE:
Wash the bra ...
Installation
1. INSTALL BRAKE VACUUM CHECK VALVE
ASSEMBLY
(a) Install the brake vacuum check valve assembly and
check valve grommet to the brake booster
assembly.
2. INSTALL BRAKE BOOSTER GASKET
(a) Install ...
Other materials:
Problem symptoms table
Proceed to the reference page shown in the table below for
each malfunction symptom and troubleshoot each circuit.
HINT:
Troubleshooting of the theft deterrent system is based on the
premise that the door lock control system and the wireless
door lock control system are operating normally. Ac ...
Battery
Check the battery as follows:
Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
Before recharging
When recharging, the battery produces hydrogen gas which is flammable an ...
How to proceed with
troubleshooting
HINT:
Troubleshoot in accordance with the procedures on the
following pages.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 PROBLEM SYMPTOMS TABLE
When problem is not listed on problem symptoms table,
proceed to A.
When problem is listed on pro ...
