ABS light
Thread Starter
Advanced
Joined: Aug 2009
Posts: 94
Likes: 0
ABS light
Afternoon all, 84 Euro, A/T transmission.
I have a problem with my ABS staying on, it comes on and stays on as soon as i turn the key. I am thinking it might be the relay, and for the 84 euro i believe this is relay XI, correct ?
To test this i believe i can jump pins 30 and 87, and if the relay is bad, then the warning light should go out, Is this correct ?
And if i have to replace the relay, i believe for the 84 Euro it is part number
A 928 615 124 01. Is this correct ?
If its not the relay, anyone know any good tricks on what else to look for.
Thanks everyone
I have a problem with my ABS staying on, it comes on and stays on as soon as i turn the key. I am thinking it might be the relay, and for the 84 euro i believe this is relay XI, correct ?
To test this i believe i can jump pins 30 and 87, and if the relay is bad, then the warning light should go out, Is this correct ?
And if i have to replace the relay, i believe for the 84 Euro it is part number
A 928 615 124 01. Is this correct ?
If its not the relay, anyone know any good tricks on what else to look for.
Thanks everyone
Rennlist Member
Joined: Mar 2004
Posts: 1,602
Likes: 9
From: Southport, NC
Most likely not the relay. Probably the wire to one of the ABS sensors has broken right on top of the sensor, a common problem. You can test it easily if you have an ohm-meter, and can find the connectors for each of the 4 sensors you have. All 4 have to be good for the light to go out. I have seen this on my 84 and 86, both times wire broken at the front left sensor itself. They are expensive,but can sometimes be salvaged, remove the sensor that is bad, and with a dremel you can cut away the epoxy at the sensor and maybe solder a new wire to it.
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
Ignore Neil's advice. His applies to when the light comes on after the car moves.
You are correct with the relay,
If it isn't the one on in the CE panel there are iirc two relays on the pump itself.
Petty,
Please do your generation, parents, and school some honor and respect and use proper English when typing here on Rennlist.
But to answer your question, ABS stands for Antilock Brake System.
You are correct with the relay,
If it isn't the one on in the CE panel there are iirc two relays on the pump itself.
Petty,
Please do your generation, parents, and school some honor and respect and use proper English when typing here on Rennlist.
But to answer your question, ABS stands for Antilock Brake System.
Addict
Rennlist Member
Rennlist Member
Joined: Nov 2003
Posts: 2,608
Likes: 12
From: Sydney AUS
Ignore Neil's advice. His applies to when the light comes on after the car moves.
You are correct with the relay,
If it isn't the one on in the CE panel there are iirc two relays on the pump itself.
Petty,
Please do your generation, parents, and school some honor and respect and use proper English when typing here on Rennlist.
But to answer your question, ABS stands for Antilock Brake System.
You are correct with the relay,
If it isn't the one on in the CE panel there are iirc two relays on the pump itself.
Petty,
Please do your generation, parents, and school some honor and respect and use proper English when typing here on Rennlist.
But to answer your question, ABS stands for Antilock Brake System.
And yes you can jumper it to see if that cures the problem but the ABS circuit is connected to the (I can't remember the number ) bus that is permanently at +12V so if you leave the jumper in your battery will go flat.
Before you jumper it check the circuit diagram on the side of the relay - There is some funny numbering on the ABS relays - you're looking for the 2 pins that are connected by a switch (looks like a gate or door on the diagram)
Thread Starter
Advanced
Joined: Aug 2009
Posts: 94
Likes: 0
Thanks all, i will be looking at it this weekend. Angood info here, i did not know there were more relays on the the pump itself. After i check the realy at the CE panel, i will be looking at the relays at the pump. Can these be tested the same way by jumping the pins ?
Rennlist Member
Joined: Feb 2002
Posts: 7,060
Likes: 42
From: Cambridge England
I wouldn't recommend trying to jump the two high power relays on the back of the ABS unit (accessable after removing the inner wheelarch cover)
The good news is that those two relays have Bosch part numbers and so can be bought at a reasonable price. The relay on the CE seems to be only available from Porsche. It was quite expensive from an OPC when I bought one recently, but I expect Roger can source one at a good price if you need it.
Also check the main 12v (unswitched) feed to the ABS. It's inside that little square plastic box about 8" away from the ABS hydraulics unit. Disconnect battery first...
The good news is that those two relays have Bosch part numbers and so can be bought at a reasonable price. The relay on the CE seems to be only available from Porsche. It was quite expensive from an OPC when I bought one recently, but I expect Roger can source one at a good price if you need it.
Also check the main 12v (unswitched) feed to the ABS. It's inside that little square plastic box about 8" away from the ABS hydraulics unit. Disconnect battery first...
Thanks all, i will be looking at it this weekend. Angood info here, i did not know there were more relays on the the pump itself. After i check the realy at the CE panel, i will be looking at the relays at the pump. Can these be tested the same way by jumping the pins ?
Trending Topics
Race Car
Joined: Jan 2004
Posts: 3,860
Likes: 0
From: Charlotte, NC
A few years ago, my ABS light started coming on. It fixed itself. Well, I may have helped a little but more by accident. Apparently a connector came loose on the wires that went from the right rear ABS sensor into the spare wheel well. As I recall the connector was under one of the small plastic covers in the corner of the spare well. Never had a problem since.
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
9 Features and Characteristics That Only Porsche People Understand
Verdad Gallardo
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way
Joe Kucinski
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)
Verdad Gallardo
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner
Joe Kucinski
This Builder Is Turning Heads With Its Slantnose 911 Creation
Verdad Gallardo
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture
Verdad Gallardo
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Verdad Gallardo
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod
Verdad Gallardo
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
