Abs/traction/brake lights

2006 TOYOTA HIGHLANDER HYBRID

164,000 MILES • 6 CYL • 2WD • AUTOMATIC

DIVIDES

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903 POSTS
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Am familiar with these abs actuator pumps going out, in most prius, and other toyota and lexus vehicles. Usually accompanied by a weird brake pedal feeling. This one feels fine, lights go off after 12 miles of deleting. Usually there are several codes tied up together, but this one only has the c1391. Are there any other reasons for this code other than a bad internal leak in the actuator?

May 1, 2021 at 8:22 AM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi,

That code is specific to a leak or what is perceived as a leak. A faulty accumulator pressure sensor can cause it as well. Chances are there is a leak in the accumulator, but to be sure, it needs to be checked.

If you look at the attachments below, they provide the diagnostics for this code. Take a look through them and let me know if they help.

If you find it needs replaced, the remaining pics below are the removal and install directions specific to this vehicle.

If you have other questions, let me know.

Take care,

Joe

See pics below.

Images (Click to enlarge)

May 1, 2021 at 10:53 PM

DIVIDES

MEMBER
903 POSTS

Replaced it but now while doing the bleeding via the scanner I never hear the pump come on and following the steps. hardly any fluid come out of the rear wheels.

May 14, 2021 at 8:44 PM

DIVIDES

MEMBER
903 POSTS

Also, there are 4 ABS relays, which to remove during the process? The two big ones next to each other?

May 14, 2021 at 8:50 PM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi,

If you look below, I highlighted the relays to remove. Also, the remaining pics are for the automated bleed.

Starting with pic 12, the directions for the initialization start.

I hope this helps.

Take care,

Joe

See pics below.

Images (Click to enlarge)

May 14, 2021 at 9:52 PM