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5. Pedal reserve travel check
(1) Start the engine and run the engine at idling.
(2) Depress the brake pedal with a pedal applying force
of 300 N (30kgf) with the parking brake lever returned.
(3) Measure the distance between the upper surface of
brake pedal pad center and the upper surface of pro-
trude section of floor panel.
Specified Value:
BOOSTER
IN-VEHICLE CHECK
1. Booster air-tight performance check
(1) Start the engine.
(2) Turn off the engine after a few minutes.
(3) Ensure that the position of the brake pedal height pro-
gressively rises every time the brake pedal is de-
pressed.
If the position of the brake pedal rises progressively at
the second and third applications, it indicates the
brake booster is functioning properly.
CAUTION:
·
Be sure to keep intervals of each application of the
brake pedal at least five seconds or more between the
first and second applications as well as the second and
third applications.
2. Booster air-tight performance check under loaded condi-
tion
(1) Start the engine.
(2) Depress the brake pedal fully.
(3) Turn off the engine while depressing the brake pedal.
(4) Ensure that the brake pedal height remains un-
changed for more than 30 seconds. It indicates that
the booster is functioning properly.
3. Booster operation check
(1) Depress the brake pedal several times under the en-
gine stopped state, until the brake pedal height will no
longer change (to release the vacuum pressure re-
tained in the brake booster).
(2) Ensure that the height of the brake pedal will go down
when the engine is started while keeping the depress-
ing force of the brake pedal unchanged.
It indicates that the booster is functioning properly.
85 mm or more
3rd application
2nd application
1st application
The pedal is held
While the engine
for 30 seconds
is running.
after the engine
is stopped.
BR–3
JBR00005-00004
JBR00006-00005
Bad
JBR00007-00006
JBR00008-00007
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