Author Topic: ABS fault code, need to get diagnosed  (Read 1589 times)

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Lila

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ABS fault code, need to get diagnosed
« on: September 19, 2005, 09:14:53 PM »
Hi Guys,

I've got a reoccurring problem with my 2000 Passat v6, 5 speed, namely I am getting an ABS fault code.  I'll explain a bit further below, but at this point I am ready to pay for professional diagnostics and get this thing fixed.  Randy (Krautsled) recommended Dave Bell at McDonald VW (on Broadway in south Denver area), but the guy I talked to on the telephone told me that no one named Dave worked there..... ?

At any rate, my question:  Do you guys like McDonald VW?  Is there a better place to get work done?  Any thoughts?  I made an appointment but it's not until next week so I could always cancel it....

Mike (aka Lila)



More details on the problem:

Printed output from VAG1551 Scan Tool (ST)

Possible cause

Corrective action

00290

Left rear ABS wheel speed sensor -G46-1)

or:

Left rear ABS wheel speed sensor -G46- installed incorrectly.


ABS wheel speed sensor rotor dirty or damaged.

Excessive wheel bearing play.

ABS wheel speed sensor -G46- faulty.

Short circuit to Ground (GND).


- Check installation of ABS wheel speed sensor.

Repair Manual, Brake System, Repair Group 45
<http://127.0.0.1:8080/vw/servlet/ESIS?id=VW.B5.SU02&title=Brake%20Syste
m&expandTOC=45>  


- Check rotor, clean or replace

Repair Manual, Brake System, Repair Group 45
<http://127.0.0.1:8080/vw/servlet/ESIS?id=VW.B5.SU02&title=Brake%20Syste
m&expandTOC=45>  


- Replace wheel bearing

Repair Manual, Suspension, Wheels, Steering, Repair Group 42;
<http://127.0.0.1:8080/vw/servlet/ESIS?id=VW.B5.SU01&title=Suspension,%2
0Wheels,%20Steering&expandTOC=42>  


- Check wheel speed sensor, "Read Measuring Value Block"
<http://127.0.0.1:8080/vw/servlet/Display?action=Goto&target=_top&type=r
epair&id=VW.B5.SU03.01.4&hit=0#VW.B5.SU03.01.4.73#VW.B5.SU03.01.4.73>
Page 01-73 , display group number 1.

 


- Test step no. 7
<http://127.0.0.1:8080/vw/servlet/ESIS?action=Goto&id=VW.B5.SU03.01.5.10
0&type=repair> Page 01-100 , electrical test.


Left rear ABS wheel speed sensor -G46-

Open circuit/short circuit to B+


Open circuit or short circuit to B+ in wiring between ABS wheel speed
sensor -G46- and ABS control module -J104-.


- If nothing is displayed during the "Read Measuring Value Block"
function and no malfunction could be found in the wiring or the ABS
wheel speed sensor, replace the hydraulic control unit.


1) Malfunction type is recognized when vehicle is driven for 30 seconds
at above 60 km/h

ianacole

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ABS fault code, need to get diagnosed
« Reply #1 on: September 19, 2005, 10:19:43 PM »
I prefer Osbourn on Colfax for maintenance work...I've had a couple of poor experiences with McDonalds.  Nothing the likes of poor workmanship where I've had to return the car; predominantly customer service issues...requesting synth oil change during scheduled maintenance and getting dino...having to keep my car for 3 days for warranty work and not wanting to give me a loaner...not calling me when my car was ready...things like that.

Ian
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ABS fault code, need to get diagnosed
« Reply #1 on: September 19, 2005, 10:19:43 PM »

jfrahm

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ABS fault code, need to get diagnosed
« Reply #2 on: September 19, 2005, 10:30:59 PM »
For something like this I'd suggest an independant shop.  Sounds like you just need an ABS sensor cleaned, a connection sorted out, or at worst a sensor replaced.  The dealer will probably chage twice what an indie shop would for something like this.

Start the car, do not move it and watch the ABS light.  Does the ABS light come on before you move the car?  Does it come on after you drive a few feet?

-Joel.
2001 Audi A8 Quattro 4.2l

Lila

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ABS issues described
« Reply #3 on: September 20, 2005, 01:20:00 AM »
Ok, for starters, if the consensus is that I should use an indie shop, does anyone have a recommendation?

The issue appears as follows:  The ABS light does not come on when the car is not moving.  When driving, it often comes on at 10mph, when the computer tests the functionality of the system.  Sometimes the ABS light does not come on when reaching 10mph, and instead comes on when driving, often corresponding with a bump in the road.

I conclude from this that I've got (1) a bad wheel bearing (2) a bad connection or (3) an electrical ghost.  The wheel bearing in the rear left wheel (the area indicated by the code) "feels" ok when I rotate it in my hands with the wheel off, but it could be bad.  The sensor seemed ok when I removed it and checked the wiring, but then, what do I know?  I did clean it and reinstall it, with no change in the functionality (or lack thereof).  I am not great with electrical stuff, and so I have not bothered to hunt for bad connections.

Does that inspire new ideas?????

shummer

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ABS fault code, need to get diagnosed
« Reply #4 on: September 20, 2005, 02:08:20 AM »
As you found out, Dave Bell doesn't work at McDonald VW any more. Ask for Brett Weldon. I've had good experience with him too, but he hasn't had to go to bat for me regarding big issues. I liked McDonald because of Dave Bell and their location on the way to my work. They are not the cheapest (just like any dealership), but they've fixed my problems properly. No idea about your error code(s).

jfrahm

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ABS fault code, need to get diagnosed
« Reply #5 on: September 20, 2005, 02:09:47 AM »
Probably a bad connection to an ABS sensor.  Pretty common.
2001 Audi A8 Quattro 4.2l

huevon

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ABS fault code, need to get diagnosed
« Reply #6 on: September 20, 2005, 04:16:14 AM »
Quote from: "ianacole"
I prefer Osbourn on Colfax for maintenance work...I've had a couple of poor experiences with McDonalds.  Nothing the likes of poor workmanship where I've had to return the car; predominantly customer service issues...requesting synth oil change during scheduled maintenance and getting dino...having to keep my car for 3 days for warranty work and not wanting to give me a loaner...not calling me when my car was ready...things like that.

Ian


I would have to second this one. ihave had my car into Osbourn twice for different issues and have execellent service! Plus, they have a shuttle that is free if you need to get to work or something and they will pick you up.

Eric18T

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ABS fault code, need to get diagnosed
« Reply #7 on: September 20, 2005, 12:29:03 PM »
my wife has had good results with Osborn, and my folks take their new VW there too and have nothing but good things to say. They are not cheap, but they seem to do good work.