ABS ECU removal

[Niles]

Is removing the ABS ECU from my 850 as easy as the Haynes manual says? Disconnect the wiring & remove the 3 bolts securing the ECU, is it that simple?

[John]

Is removing the ABS ECU from my 850 as easy as the Haynes manual says? Disconnect the wiring & remove the 3 bolts securing the ECU, is it that simple?

It is, removed mine when I first got my S70, I think its the same as yours, common fault on these, plenty of people do repairs now as well, the car will run fine without it, but obviously you will have no ABS and your speedo will be inop.

[Niles]

Thanks, so its just a case of remake the solders? My abs lite comes on when i press the 'loud' pedal, just tippy toeing around & the light stays out.

[850 2.5 10v]

Unplug the multi pin scart like connector and also the power supply.

There are four bolts and you will need a E5 torx sockets (1/4 inch drive) to get them off. Do not be tempted to use anything else to remove them as you'll have an awful job with a stripped head particularly for the 2 bolts you can't see - its all done by touch anyway for those ones....

To be honest you are as well for all the hassle cutting open and soldering getting someone do this for you.

Balls it up (cutting open the case / soldering) and you'll be landed with a big bill for another one.

HLM will do an exchange .

I did mine last week with them and it could not have been simpler.

Call Hamish.

[Loz1]

Thanks, so its just a case of remake the solders? My abs lite comes on when i press the 'loud' pedal, just tippy toeing around & the light stays out.

here's a link on how to remove/re-solder your abs

http://www.freewebs.com/dacvolvo/absrepair.htm.

[PNuT]

850s had two different abs systems fitted.....

[stevie69]

4mm socket does the job.

[Jod T5]

Thanks, so its just a case of remake the solders? My abs lite comes on when i press the 'loud' pedal, just tippy toeing around & the light stays out.

I would expect the sensor on your servo to be the cause of this, check the connections....
Cheers
Jod

[Jod T5]

4mm socket does the job.

At your own risk, the correct socket is a E5 Female torx, a 4mm may well round the heads leaving you in a right pickle....Seen it....
Cheers
Jod

[cameron]

Just hope its not the earlier set up, ( ECU on top of the pump ) I could not find an ecu in this country i had to go stateside

Lee

850s had two different abs systems fitted.....

[Jod T5]

Just hope its not the earlier set up, ( ECU on top of the pump ) I could not find an ecu in this country i had to go stateside Lee

Sounds a 'mare...I always beleived there were a few phase 1 ecm's about because generally they were considered more reliable than the phase 2, teves units....
Cheers
Jod

[cameron]

Hey Jod

I tried for 2 months to find a Tracs Pump and ecu in this country that was not extortionatelly priced i.e. £250 + for a unit that hadnt even been refurbed !

I found 2 Tracs Pumps and Ecu's in America 1 for myself to use and one to sell, i payed £60 for my one and £35 for the one i sold on, I advertised it on ebay for £150 and some guy snapped my hand off

There are loads of Non Tracs pumps and ecu's knocking about though

Just a Tracs Ecu From the states is going for good money now.......http://cgi.ebay.com/ebaymotors/VOLVO...mZ190252916295

Lee

[Jod T5]

Hey Jod I tried for 2 months to find a Tracs Pump and ecu in this country that was not extortionatelly priced i.e. £250 + for a unit that hadnt even been refurbed ! I found 2 Tracs Pumps and Ecu's in America 1 for myself to use and one to sell, i payed £60 for my one and £35 for the one i sold on, I advertised it on ebay for £150 and some guy snapped my hand off There are loads of Non Tracs pumps and ecu's knocking about though Just a Tracs Ecu From the states is going for good money now.......http://cgi.ebay.com/ebaymotors/VOLVO...mZ190252916295 Lee

As i said.., a nightmare for you, do you by any chance know the part numbers for the tracs and non tracs ECM's?....
Cheers
Jod

[cameron]

Hey Jod i think the non Tracs ECM is Ate Part No 9401541 and has a white label on it, the Tracs ECM is Ate part No 9401542 and has a blue label on it.

HTH

Lee

[Jod T5]

Hey Jod i think the non Tracs ECM is Ate Part No 9401541 and has a white label on it, the Tracs ECM is Ate part No 9401542 and has a blue label on it.

HTH

Lee

Thanks Lee
Appreciated...
Cheers
Jod

[p0xy]

well i was gonna do mine today but its p1ssin it down so this is gonna have to wait lolol