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How to BLEED ABS Systems

Old 03-08-2010, 03:45 PM
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Post How to BLEED ABS Systems

This assumes you already know how to bleed the main brakes. Search a post by DesertHonda for those instructions.

Beginning in 1998, Accord ABS no longer has a separate fluid reservoir, and no longer has a separate bleeding sequence. Bleeding the main brake system pushes fluid through the newer ABS system and no additional bleeding is required. Bleeding order for the newer cars is LF-RF-RR-LR.


Bleeding ABS on Accord up through 1997.

The ABS modulator is shown. The rubber cap for the reservoir is #14, but also remove the other parts which have a tiny vent hole so you can pour fluid into the reservoir.

Check for leaks anywhere, but there's O-rings at the base of the accumulator (#23) and at the pump (#24). Fix any leaks first, & bleed the ABS after they're fixed.

The rubber cap for the ABS bleed screw is #1, while the bleeder itself isn't given a tag. Find a hose that fits well on the bleeder, & keep it under control while bleeding. Open the bleeder slowly, only just far enough to begin flow. There's enough pressure to cut through your skin if you're not careful.

1) After running the car, turn it off & fill the ABS reservoir to the MAX mark.

2) Open the bleeder carefully; turn it off immediately when fluid stops flowing.
3) Run the engine for a few seconds; turn if off after the ABS pump stops running.
4) Refil the ABS reservoir to the MAX mark.

5) REPEAT steps 2-4 several times until there's no more air bubbles coming out.
6) Replace all the caps & lids.

Last edited by JimBlake; 10-13-2011 at 09:18 PM. Reason: incorrect bleeding order
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