Toyota Highlander Service Manual: On-vehicle inspection
1. INSPECT BRAKE BOOSTER

(a) Airtightness check.
- Start the engine and stop it after 1 or 2 minutes. Depress
the brake pedal several times slowly.
HINT:
If the pedal can be depressed (to the floor) the first time, but
cannot be depressed as far on the 2nd or 3rd time, the booster
is airtight.
- Depress the brake pedal while the engine is running,
and stop the engine with the pedal depressed.
HINT:
If there is no change in the pedal reserve distance while holding
the pedal for 30 seconds, the booster is airtight.

(b) Operating check.
- Depress the brake pedal several times with the ignition
switch off and check that there is no change in
the pedal reserve distance.
- Start the engine with the brake pedal depressed.
HINT:
If the pedal goes down slightly, operation is normal.
2. INSPECT VACUUM CHECK VALVE
(a) Check vacuum check valve.
- Slide the clip and disconnect the vacuum hose.
- Remove the vacuum check valve.

- Check that there is ventilation from the booster to
engine, and no ventilation from the engine to the
booster.
- If any fault is found, replace the vacuum check
valve.
COMPONENTS

1. REMOVE FRONT SUSPENSION BRACE SUB-ASSY UPPER CENTER (SEE PAGE 32-14 )
2. REMOVE AIR CLEANER ASSY (2AZ-FE ENGINE TYPE) (SEE PAGE 14-24 )
3. REMOVE AIR CLEANER CAP SUB-ASSY (3MZ-FE ENGINE TYPE) (SE ...
More about Toyota Highlander:
Using the steering
wheel switches
The steering wheel switches can be used to operate a connected
cellular phone.
Operating a telephone using the steering wheel switches
Volume switch
increase/decrease the volume
press and hold:
continuously increase/
decrease the volume
cursor switch
s ...
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