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Topbomin

New Member
Messages
24
My 3200GTA has EBD ABS and ASR lights on all the time. I replaced the rear Reluctor rings, assuming that the fault lay there because the ASR light is on. However there is no improvement. I am hoping it isn't the modulator as they seem quite expensive, especially as we hauliers pay about £400 for them. Whadya think?
 

Contigo

Sponsor
Messages
18,376
These might be useful.

2.jpg
 

Gp79

Member
Messages
1,393
The ABS system and ASR are all part of the same control system, so an ABS fault will cause the ASR not to work.

Check each wheel sensor with a multimeter on the diode setting, they should all read roughly the same, an odd one out can tell you which sensor is faulty, there are other ways to check the speed sensors if you check youtube.
 

Zep

Moderator
Messages
9,110
I should say Doodlebug (Patrick) had all of the lights on his 4200 on MOB. Turned out to be his ABS unit. He may have found someone to rebuild it.
 

Slowly

Junior Member
Messages
327
My ABS/MSP/ and one other which I can't remember [ETA it was the pimp-my-ride bouncing car one] lit up on the way down for its service last week. Faulty wheel speed sensor. Wheel bearing includes the sensor £481 for GS which I assume is either the same or will be similar for a 3200.
 
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conaero

Forum Owner
Messages
34,594
My ABS/MSP/ and one other which I can't remember lit up on the way down for its service last week. Wheel bearing includes the sensor £481 for GS which I assume is either the same or will be similar for a 3200.

Similar. In essence the same but with a different rating in the sensor.
 

Moz1000

Member
Messages
820
My ABS/MSP/ and one other which I can't remember [ETA it was the pimp-my-ride bouncing car one] lit up on the way down for its service last week. Faulty wheel speed sensor. Wheel bearing includes the sensor £481 for GS which I assume is either the same or will be similar for a 3200.
Saw your GS at Emblem this evening just after Jake had done his magic. Very nice. He gave my GTS a make over also. Good guy.
Moz
 

doodlebug

Member
Messages
913
As Zep said, I had exactly the same on my 2003 4200 Coupe. It also caused the speedo to stop working, albeit intermittently.

I was told there are several versions of this part and it's recommended that you buy one with exactly the same part number because of software variations. There is no new stock available because the part is obsolete and I had a **** of a job finding a replacement. Eventually I located a seller on Ebay that was breaking a 2003 4200 with the right part.

I've found a couple of places which can rebuild these but I haven't got around to sorting my faulty unit yet. Will keep the forum updated.
 

Topbomin

New Member
Messages
24
Thank you all, especially Contigo for his invaluable chart translating the warning symbols. I will get on with it asap, then MOT.
 

dickygrace

www.richardgracecars.co.uk
Messages
7,309
The wheel hubs are available, a GS is likely to be a blue wired one, earlier cars are yellow wire.
 

Navcorr

Member
Messages
3,839
Did someone not have one of their 3200 bearings re-raced recently? By a firm in the SW iirc. Cant recall if the sensor was replaceable or even accessible though.
 
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breakeronly

Junior Member
Messages
90
The wheel hubs are available, a GS is likely to be a blue wired one, earlier cars are yellow wire.
The earlier cars have a black wire Richard, the 3200 setup is completely different from the 4200 / GS setup, the wheel bearings themselves do not have any wiring directly into the bearing, abs pick up is in fact a sensor attached to the hub carrier
Have a look at this one and you will see what I mean https://www.ebay.co.uk/itm/253969588078
 

dickygrace

www.richardgracecars.co.uk
Messages
7,309
I was referring to the 4200 as in the post before mine. Sorry, I should have quoted that when commenting. As you say, 3200 ones are different.
 

TimR

Member
Messages
2,656
Reading between the lines, ABS is switched off when MSP is off in a (facelift) 4200..?
I actually dont think it does but I havent tested my theory to destruction at this time...Anyone care to comment...?

Grtzzz...
 

Topbomin

New Member
Messages
24
0
The ABS system and ASR are all part of the same control system, so an ABS fault will cause the ASR not to work.

Check each wheel sensor with a multimeter on the diode setting, they should all read roughly the same, an odd one out can tell you which sensor is faulty, there are other ways to check the speed sensors if you check youtube.
I finally managed to get my car into the workshop and checked the resistance of all wheel sensors, sadly they all read around 1.6k ohm. So next stage is to see if I can find a way of testing the modulator.
 

Gp79

Member
Messages
1,393
0

I finally managed to get my car into the workshop and checked the resistance of all wheel sensors, sadly they all read around 1.6k ohm. So next stage is to see if I can find a way of testing the modulator.

Did you check with the multimeter on the diode setting? (Looks like an arrow)
When I had a sensor fault this was what showed the difference to find the fault (3 the same 1 different).
Search abs fault as I put a link that helped me trouble shoot.
 

Topbomin

New Member
Messages
24
Did you check with the multimeter on the diode setting? (Looks like an arrow)
When I had a sensor fault this was what showed the difference to find the fault (3 the same 1 different).
Search abs fault as I put a link that helped me trouble shoot.
On the multimeter I used the resistance and diode mode are the same mode. The hard bit was removing the back seat