Symptom Troubleshooting - Honda Accord 2008 Manual

07/11/02 09:31:42 61TA0000_190_0005

Symptom Troubleshooting

Rapid brake pad wear, vehicle vibration
(after a long drive), or high, hard brake pedal
NOTE: Make sure that the caliper pins are installed
correctly.
Upper caliper pin B and lower caliper pin A are different.
If the pins are installed in the wrong location, it will
cause vibration, uneven or rapid brake pad wear, and
possibly uneven tire wear. For proper caliper pin
location: NISSIN type (see page 19-23), AKEBONO type
(see page 19-24).
1. Drive the vehicle until the brakes drag or until the
pedal is high and hard. This can take 20 or more
brake pedal applications during an extended test-
drive.
2. With the engine running, raise the vehicle on a lift,
and spin all four wheels by hand.
Is there brake drag at any of the wheels?
YES − Go to step 3.
NO − Look for other causes of pad wear, high pedal,
or vehicle vibration.
3. Turn the ignition switch to LOCK (0), press the
brake pedal several times to deplete the vacuum in
the brake booster, and then spin the wheels again
to check for brake drag.
Is there brake drag at any of the wheels?
YES − Go to step 4.
NO − Replace the brake booster (see page 19-28).
4. Without removing the brake lines, unbolt and
separate the master cylinder from the booster, then
spin the wheels to check for brake drag.
Is there brake drag at any of the wheels?
−
YES Go to step 5.
NO − Check the brake pedal position switch
adjustment and pedal free play (see page 19-6).
5. Loosen the hydraulic lines at the master cylinder,
then spin the wheels to check for brake drag.
Is there brake drag at any of the wheels?
YES − Go to step 6.
NO − Check the master cylinder reservoir for
contamination in the brake fluid. If you find
contamination, flush the entire brake system of all
contaminated fluid. If the brake fluid is OK, replace
the master cylinder (see page 19-25).
6. Loosen the bleed screws at each caliper, then spin
the wheels to check for brake drag.
Is there brake drag at any of the wheels?
YES − Check the master cylinder reservoir for
contamination in the brake fluid. If you find
contamination, flush the entire brake system of all
contaminated fluid. If the brake fluid is OK,
disassemble and repair the caliper on the wheel(s)
with brake drag.
NO − Look for and replace any damaged brake lines.
If all brake lines are OK, replace the VSA
modulator-control unit (see page 19-141).
ＴＡ０８Ａ００Ｄ１４３００００００００ＦＡＡＴ００
19-5