ABS doesn't self test 1988
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 1,199
Likes: 4
From: Cairns Australia
ABS doesn't self test 1988
I have the ABS warning light on and no ABS working.
It doesn't self test.
I've read the Corvette fever article http://www.corvettefever.com/howto/19239/index.html
and also a good write up by mike 88Z51 http://forums.corvetteforum.com/c4-t...n-my-86-a.html
I'm hoping that because there is no self test, it will be one of the three relays, just checking here for others comments who may have had the same problem ?
It doesn't self test.
I've read the Corvette fever article http://www.corvettefever.com/howto/19239/index.html
and also a good write up by mike 88Z51 http://forums.corvetteforum.com/c4-t...n-my-86-a.html
I'm hoping that because there is no self test, it will be one of the three relays, just checking here for others comments who may have had the same problem ?
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Sounds like you've got it narrowed down....good work.
One obvious check if you haven't done so already is to make/ be sure the single electrical ABS connector is still firmly plugged in on the brake master cylinder.
Good luck
One obvious check if you haven't done so already is to make/ be sure the single electrical ABS connector is still firmly plugged in on the brake master cylinder.
Good luck
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 1,199
Likes: 4
From: Cairns Australia
I will check the M/C connection, thanks, but that wouldn't change the self test would it?
or does the self test not happen once the ABS warning light is triggered?
In which case how do I cancel it?
I was checking that all the connectors at the ABS were connected properly and I noticed a tang sticking out from the module - arrowed in this pic - it looks like it should have a connection - or is this normal?
or does the self test not happen once the ABS warning light is triggered?
In which case how do I cancel it?
I was checking that all the connectors at the ABS were connected properly and I noticed a tang sticking out from the module - arrowed in this pic - it looks like it should have a connection - or is this normal?
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
I will check the M/C connection, thanks, but that wouldn't change the self test would it?
or does the self test not happen once the ABS warning light is triggered?
In which case how do I cancel it?
I was checking that all the connectors at the ABS were connected properly and I noticed a tang sticking out from the module - arrowed in this pic - it looks like it should have a connection - or is this normal?
or does the self test not happen once the ABS warning light is triggered?
In which case how do I cancel it?
I was checking that all the connectors at the ABS were connected properly and I noticed a tang sticking out from the module - arrowed in this pic - it looks like it should have a connection - or is this normal?
The brake system did work properly before correct?
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 1,199
Likes: 4
From: Cairns Australia
Thanks engle1147.
The ABS worked fine until last year, when the ABS light stayed on. I tested the brakes and no ABS.
I did have one of the brake pipes that go to the ABS replaced about 2.5 yrs ago, I don't think thats anything to do with it, but you never know, thats why I went to check all the connectors.
And this year I had a new master cylinder fitted which came with new switch. I'll look in the manual and see if I can test that connector and will make sure it's seated, but I'm sure that the mechanic who fitted the new MC will have done that - and the ABS was faulty 6 months or more before the M/C was replaced.
The fact that it doesn't self test encourages me that it might be one of the three relays. I'll have to order them so want to make sure it's not something simple first.
The ABS worked fine until last year, when the ABS light stayed on. I tested the brakes and no ABS.
I did have one of the brake pipes that go to the ABS replaced about 2.5 yrs ago, I don't think thats anything to do with it, but you never know, thats why I went to check all the connectors.
And this year I had a new master cylinder fitted which came with new switch. I'll look in the manual and see if I can test that connector and will make sure it's seated, but I'm sure that the mechanic who fitted the new MC will have done that - and the ABS was faulty 6 months or more before the M/C was replaced.
The fact that it doesn't self test encourages me that it might be one of the three relays. I'll have to order them so want to make sure it's not something simple first.
Last edited by Stingraynut; May 24, 2009 at 04:23 AM.
