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On and Off ABS Service/Brake assist service - BCM-0070

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Old Apr 20th, 2019, 16:28   #11
aslan
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After 2 years the same problem has recurred with the same error message.

I'm not sure if this is a sign I need a new BCM pump but today I took out the pump and cleaned the connection again. There was significant dust and fine specks of debris inside the connector.

Doing this a 2nd time around was faster. And I took a few pics

It's best to remove the long bar on top of the engine. And the engine fuse box need to be removed and pushed away. Don't forget to disconnect the battery first

With those away you will have an easy access to the pump.



First 3 screws for the ABS bracket need to be removed. Then you can move the whole module a little bit to get to the 2 torx screw securing the pump

This is a pic after the pump removed. I have cleaned the area already



I've been searching and so far it appears the pump only comes with the module. Does anyone know if the pump can be brought separately? And who makes these pump?
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XC90 2.5T 2009
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B4204T3 V40 2004 - sold
B230E 740 1989 - sold

Last edited by aslan; Apr 20th, 2019 at 16:42.
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Old Apr 25th, 2019, 14:25   #12
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Thank you Aslan
Iam having the same symptoms. Its not the ABS rings though.
I followed Aslan instructions and cleaned the connectors of the pump with contact cleaner.

I didn't take the top bar. Still managed to get the pump out with little bit of fiddling.
For some reason the outer cover of the pump start to come off, leaving the coil intact with the module.
But with a slight pry under the seal lifted the whole pump.

Hopefully the code won't reoccur. If it does , I will update and ask for help.
Thank you Aslan again!!!!
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Old Apr 27th, 2019, 12:52   #13
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Any updates? Did cleaning it solved the issue?
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Old Apr 27th, 2019, 13:31   #14
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Just 2 days now. So far nothing came up.
Will update after 500 miles.
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Old Nov 9th, 2019, 18:24   #15
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My 2004 XC90 has ABS light on and “ABS/ANTI SKID SERVICE REQUIRED” message displayed.
(These were displayed when I purchased vehicle recently, but was not put off)
I plugged VIDA in today and fault code BCM-0070
I suspect the same, will try cleaning pump mating surfaces tomorrow
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Old Mar 25th, 2020, 13:48   #16
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After one year, issue came back.
Aslan , did you sort this issue?
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Old Mar 26th, 2020, 00:16   #17
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Yes. So far it's been ok since Apr 2019.
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Old Mar 26th, 2020, 06:03   #18
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Quote:
Originally Posted by aslan View Post
Yes. So far it's been ok since Apr 2019.
[QUOTE[IMG]







[/IMG]



I removed the motor again today. Pryed open the sides to remove the coil.
Cleaned up the black graphite bits from the motor. Look like the brushes have been thined down due to the age of the car. May be that is why the connection issue.
There is no absolute way to replace the brush because it is not push and play. There is no screws. I think just to replace the Motor is best way from junk yard or eBay.

Pain in the neck bit was when removing the motor there is a small cup in the ABS unit where the motor spindle goes thru, this part came off with motor.
As you can see in Aslan's post, it is held between two small pushing rods in the sides. This cup came off and it took nearly 3 hrs to figure out to push it back .
Who ever doing this in future take a note of this and use some thing to wedge between motor and abs unit when removing so it won't come off with motor.
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