Honda 2004 Odyssey Service Manual page 1206

Rapid brake pad wear, vehicle vibration (after a long drive), or high, hard brake pedal
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 the pad wear, high pedal, or vehicle vibration.
3. Turn the engine off, pump the brake pedal 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.
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.
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 Replace the master cylinder.
6. Loosen the bleeder screws at each caliper, then spin the wheels to check for brake drag.
Is there brake drag at any of the wheels?
YES 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 ABS modulator.
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