ABS - Antilock warning light on UPDATE
07-08-2003, 10:13 AM
#16
Burning Brakes
Thread Starter
ok, that did clarify things quite a bit ! 
It can't be the brains, cause the light does go out after starting the engine.
So I think, that it is definitely the drive off test, which is causing this whole thing.
Where are the two relays, you mentioned, located,
the pump motor relay and valve relay ?
It can't be the brains, cause the light does go out after starting the engine.
So I think, that it is definitely the drive off test, which is causing this whole thing.
Where are the two relays, you mentioned, located,
the pump motor relay and valve relay ?
07-08-2003, 10:14 AM
#17
Drifting
Join Date: Jun 2001
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by sybelix:
<strong>I did check the relay in the fuse box, is there some other as well?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Yep. You have to remove the wheel arch liner onn the passenger side, and look inside the arch to find the unit. There is a black plastic cap screwed on with a thumb screw (no tool needed..... in theory!) Under that are two more relays. It's my theory as to what's gone on my car,bbut having just go the head back on, I needed a weekend off before crawling under it again!
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by 924RACR:
<strong>Will somebody please archive this stuff??? This should be a complete or fairly complete run-down on the basic failure modes of the ABS system. The next step would be to pull codes. Sometimes these can be obtained by a flash code, but I don't know about these cars. Depends on the manufacturer. Will have to check it out someday.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">There is a service book from Porsche with all of this stuff. The workshop manuals basically ignore the ABS troubleshooting, and point at this 'supplement' instead. The problem is, I don't know anyone who has it, or where to even start to find it.
<strong>I did check the relay in the fuse box, is there some other as well?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Yep. You have to remove the wheel arch liner onn the passenger side, and look inside the arch to find the unit. There is a black plastic cap screwed on with a thumb screw (no tool needed..... in theory!) Under that are two more relays. It's my theory as to what's gone on my car,bbut having just go the head back on, I needed a weekend off before crawling under it again!
</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by 924RACR:
<strong>Will somebody please archive this stuff??? This should be a complete or fairly complete run-down on the basic failure modes of the ABS system. The next step would be to pull codes. Sometimes these can be obtained by a flash code, but I don't know about these cars. Depends on the manufacturer. Will have to check it out someday.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">There is a service book from Porsche with all of this stuff. The workshop manuals basically ignore the ABS troubleshooting, and point at this 'supplement' instead. The problem is, I don't know anyone who has it, or where to even start to find it.
07-08-2003, 10:21 AM
#18
Burning Brakes
Thread Starter
thanks guys, I'll get to it, when I get home from the office.. <img border="0" title="" alt="[Wink]" src="wink.gif" />
BTW, Sami, you wanna see some action, concerning the anti lock brake system..
BTW, Sami, you wanna see some action, concerning the anti lock brake system..
07-11-2003, 03:56 AM
#19
Burning Brakes
Thread Starter
yesterday I got to the ABS pump, it's in a very interesting place..
Anyway, took the pump relay and the valve relay out, and I'm going to the local Bosch parts store to check / replace them.
So hopefully it will do the trick.
Anyway, took the pump relay and the valve relay out, and I'm going to the local Bosch parts store to check / replace them.
So hopefully it will do the trick.
07-11-2003, 07:18 AM
#20
Burning Brakes
Thread Starter
nope.
they were ok.
one more thing to check, the main ABS relay in the fuse box. Then I guess I have to start cleaning those speed sensors.. <img border="0" title="" alt="[Frown]" src="frown.gif" />
