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Old 07-17-2015, 09:27 PM   Thread Starter #1
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Default ABS Pump on while car is off

My ABS Pump has been running constantly for the past week. I have been pulling the fuse to prevent the battery from draining.

I haven't had any problems with my speedometer or the abs kicking in at low speeds.

Both of my rear calipers are starting to seize, and are being replaced within the week.

Is it possible for the pump to go bad without any other symptoms being present.
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Old 07-22-2015, 07:29 PM   Thread Starter #2
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Default Re: ABS Pump on while car is off

Just purchased a scanner capable of doing ABS the codes that came back were
-C1111 Pump Motor Circuit Fault
-C1140 ABS Actuator Relay Circuit Fault

So i'm guessing my ABS pump and relay are shot!!!
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Old 07-22-2015, 07:47 PM   #3
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Default Re: ABS Pump on while car is off

Did you checked for corrosion !
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Old 07-24-2015, 01:50 PM   #4
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Default Re: ABS Pump on while car is off

Originally Posted by alchemist.zim View Post
Just purchased a scanner capable of doing ABS the codes that came back were
-C1111 Pump Motor Circuit Fault
-C1140 ABS Actuator Relay Circuit Fault

So i'm guessing my ABS pump and relay are shot!!!
New abs pump is 1400 from dealer
Got one from junkyard for less than 400
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Old 07-24-2015, 04:29 PM   #5
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Default Re: ABS Pump on while car is off

Originally Posted by alchemist.zim View Post
My ABS Pump has been running constantly for the past week. I have been pulling the fuse to prevent the battery from draining.

I haven't had any problems with my speedometer or the abs kicking in at low speeds.

Both of my rear calipers are starting to seize, and are being replaced within the week.

Is it possible for the pump to go bad without any other symptoms being present.
I just recently had seized calipers and replaced them. My feeling now is I wish I had replaced that abs actuator as soon as it started giving me a problem. May all stem back to that as all other problems I've described in my abs thread seem to have stemmed from there. First issue was that actuator kicking on when it wasn't supposed to. Also seems to be a process of elimination with abs probs and solutions. I have replaced everything and still have big problem!
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Old 07-24-2015, 04:57 PM   #6
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Default Re: ABS Pump on while car is off

Originally Posted by maximus06 View Post
I just recently had seized calipers and replaced them. My feeling now is I wish I had replaced that abs actuator as soon as it started giving me a problem. May all stem back to that as all other problems I've described in my abs thread seem to have stemmed from there. First issue was that actuator kicking on when it wasn't supposed to. Also seems to be a process of elimination with abs probs and solutions. I have replaced everything and still have big problem!
Have you pulled the ABS codes from your car using a scanner?
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Old 07-24-2015, 05:29 PM   #7
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Default Re: ABS Pump on while car is off

HI Folks

So My ABS was engaging under normal breaking, while coming to a soft stop. No warning lights came on and it was not recording any codes.

I was unable to fix and drove for awhile like this. I had other things I needed to do. Just replaced spark plugs, coils, all intake gaskets, motor mounts. After this was done car wouldn't Idle correctly and we ended up replacing some little electric module by intake manifold.

ABS issue was getting worse. ABS actuator became stuck on at all times, EVEN WITH CAR OFF! Now it was making all dash warning lights go on. When car was on ABS no longer engaged at all though. I had to diusconnect battery when parked till I could fix. I don't know if that created more problems?

There morning I was taking it to the shop for ABS fix, the speedometer and cruise control went out. Tachometer still works fine.

We have replaces ABS actuator, speed sensors and the CPU located behind the radio (which was suggested).

ABS actuator goes off when the car is off now. However, I still have no ABS functioning while driving. Dash lights are still on. Speedo still won't work.

Dealership wants 900 to do something with computer they say will make everything work.

WTF????

Read more: ABS Issues: HELP! GREMLINS
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Old 07-24-2015, 07:10 PM   Thread Starter #8
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Default Re: ABS Pump on while car is off

REPAIR WORK HAS BEEN SUCCESSFULLY COMPLETED!!!

No sensors were replaced or cleaned in the process. I bought a used ABS pump\relay from off of eBay. Below is a pic in case anyone wanted to know. Here are some tips for anyone who wants to try to attempt this type of repair work.

1. Find someone with an ABS scanner, and get ALL ABS CODES. There is no point in replacing just the pump if any of your sensors are bad as well
2. If you do think you need to replace the ABS pump\relay make sure you get the correct part number which can be found on the top of the part.
3. A brand new one from Nissan is gonna run you $1000+. Junkyard prices start at $100 on eBay. If you decide to get a used part make sure it comes with a warranty.
4. Have plenty of time to devote to the actual repair work. Its gonna take a minimum of 4 hours to do
5. Unless you plan on dropping the engine, your gonna have to remove the intake manifold. The ABS pump is located on the passenger side firewall, and there is virtually no room to work in there
6. Take pictures of where all of the lines, and sensors go. Everything becomes a blur when your all done, but you have 1 line loose, and you don't know where it goes.
7. BE EXTRA CAREFUL WITH ALL HARD LINES NEAR THE PUMP. You may think they are sturdy, but they really aren't meant to be moved to much. If something breaks you in for a bad time

After my uncle/mechanic and I got the pump in, we bleed the system by filling the main cylinder reservoir then opening each corner 1 at a time until the reservoir stopped draining, closing the caliper then filling it back up and moving to the next one. After that we went around the car 2-3 times doing a regular brake bleed process. You might need to do more or less, better to error on the side of caution. Once we were satisfied we checked for any other codes, and took a test drive

As I've stated, before this my ABS pump would stay on as long as the fuse was in place. I removed the ABS fuse located next to the battery to prevent the pump from draining my battery. !!!WARNING!!! This fuse also controls you power locks, windows, sunroof, trunk lock and turn signals from what I tell. It is a red combination fuse with 3 different fuses in it, with a clear plastic cover on top.

Below are pics of the ABS pump\relay (before you ask yes they come as 1 big part, and should not be seperated), the fuse cluster to remove if the abs pump is constantly running, and a video made by O.G.Nat-tral1 showing the process of replacing the ABS pump\relay

ABS Pump/Relay
Click the image to open in full size.

Part# (The part number is located on the metal part of the pump directly in the center, the 2nd line of numbers)
Click the image to open in full size.

Fuse Cluster (The red fuse in the upper-left corner is the one you need to remove
Click the image to open in full size.

Video by O.G.Nat-tral1 showing the process of removing and installing an ABS pump
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Old 07-27-2015, 09:10 AM   #9
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Default Re: ABS Pump on while car is off

Yes sounds like a replacement was in order..
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