ABS/traction/brake lights

Tiny
DIVIDES
  • MEMBER
  • 2006 TOYOTA HIGHLANDER HYBRID
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 164,000 MILES
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?
Saturday, May 1st, 2021 AT 8:22 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 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.
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Saturday, May 1st, 2021 AT 10:53 PM
Tiny
DIVIDES
  • MEMBER
  • 910 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.
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Friday, May 14th, 2021 AT 8:44 PM
Tiny
DIVIDES
  • MEMBER
  • 910 POSTS
Also, there are 4 ABS relays, which to remove during the process? The two big ones next to each other?
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Friday, May 14th, 2021 AT 8:50 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 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.
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Friday, May 14th, 2021 AT 9:52 PM

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