Hello All...

Im having a problem with my ABS/ASR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !
Last time i had a problem you all solved it and I love this forum and everyone in it.
I have gone mental trying to solve this problem. I was going to spend $500 on a Tech 1 scanner, for my ABS/ASR problem I am having.

Heres the issue....
My ABS/ASR lights are both on. I had a buddy w/ a snap on scanner run the codes and it came up as 'CODE 26' (ABS) which is the QUAD DRIVER MODULE 1 (according to the scanner).
seems simple enough. I dont have access to the FSM for my year.
Its a 92 base. I just put new tires on her and new rims.. I will provide pics.
but my mechanic told me to get a new BCTCM (brake control computer)
I did that and installed it myself (not too bad if i do say so) and I disconnected the battery before I did it to clear any codes in the memory.
BUT TO NO AVAIL!!!!!!!!!!!!!!!!!! my car still barely stops w/o ectreme effort and I cannot bear to drive it like this! its unsafe. I cant speed around with it like this. How do I fix it? How do i scan for the specific code for my car's issues? DOes anyone have this f-----g Tech 1 gm scanner tool? I live in RI, I stay in CT sometimes. I will travel to you with the car if you can help me, I have no problem paying, but I dont want to take it to the dealer (bad experience) Anyone able to help me?

I looked up the way to use the ccm to then get the codes from the aldl connector, but I figure it will only give me the generic code 26 again.
Please help! Anyone.....!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!

let me know... I will check this again ASAP! my personal email is briand354@hotmail.com
If you have the FSM for a 92 please post the ABS/ASR section...
im begging you...
thank you in advance!

 

There is no code 26 for the ABS/ASR on a '92.

The FSM says you need the " '88-'92 Tech I Brake System Cartridge" for the Tech I.

The ABS/ASR section is 136 pages.

Make sure your brake fluid is full.

There are threads about inadequate braking. Do a search.

 

The code 26 you are reading is in the ECM not the ABS controller. Very few aftermarket scan tools can access any controller except for the ECM/PCM.
The Tech1 can if you have the correct cartridge, but ABS diagnosis may also require a breakout box and adapter.
You should be able to read the ABS code using the CCM in sequence mode, note the number of the module where codes are stored.
Unless you are simply low on brake fluid as mashinter mentioned you will struggle to correct an ABS problem without the FSM, it is worth the money, if you doubt it, think of what you spent for the EBTCM.
The FSM will also help to correct that quad driver module fault. Good luck.

 

You need a paperclip and less than five minutes to read module 9 codes on a 92. Module 9 will have the ABS/ASR codes. It seems that lately people are either unaware or unwilling to read their own codes. *boggles*

To the OP: I emailed you a PDF with pictures and everything about reading the codes. Post up what you find and we will move through the diagnostic map in the FSM.

 

Ok, I got your email and I am going to follow the instructions tonight and I will post what I come back with.

Thank you for helping me!
Ill let you know what I find! thank you again!
-Brian

 

Sorry for the long time in no reply.
I had 3 teeth extracted and havent been able to stand longer than 5 mins w/o getting dizzy and spitting blood. good times.

Ok, so here is what it came out with...

mod 1
c12 - cannot find ?

mod4
h26 - quad driver module

mod 9
h72 - serial data link no connection
h83 - low level brake?

I looked them all up and I put in the corresponding code.
So... what to do now?
Is it just trying to tell me I need some brake fluid?
I looked and it looked alright, but I didnt add any.
Please let me know, my brakes are scary to say the least, and not responsive.
Thanks,
Brian

 

If the brake pedal effort is really high, I would be looking to the brake vacuum booster being kaupt. We had it go on our '94.

 

I hope you are feeling better.

C = Current H = Historical

c12 means no trouble codes stored
h26 means that at some time in the past there was a voltage out of spec in the AIR system. I'd clear it and see if it ever returns before taking any action
h72 means that at some time in the past there was a problem with the ECM/CCM/EBCM talking to one another. Again, I'd clear it and see if it ever returns before taking any action
h83 means that at some time in the past the system thought that there was too little brake fluid. This is the cause of your ASR/ABS lights. The 92 has a known issue with false low brake fluid warnings. This was addressed in a TSB. There are some who switched out the enitre master cylinder and some who changed out the sensor in the master cylinder. The sensor costs about $10-$15 and is used in just about everything from GM over a 10 year period. I don't know if 92 got a bad batch of these or what but I had to replace the one in my wife's car (also a 92 C4) and since then (knock on wood) the code 83 has gone away.

Clear the codes with the proceedure I sent you and consider replacing that sensor. If that fails to solve the problem replace the master cylinder.


EDIT: Ok so I just re-read the OP. If the car won't stop right then do the normal checks. Make sure that there is no air in the lines and the fluid is fresh. If the ABS system fails you should still have normal brakes. So the light coming on is one thing while the lack of brakes is another. As FireRoc said, the booster and its associated vacuum lines and check valve are suspect any time the pedal becomes that hard to push.

 

If he clears the codes and it doesn't fix his problem, shouldn't test the power booster before swapping the MC? I know when my PB went on my 96 Jimmy I had to stand on the pedal to get the truck to slow down, and I'm 230#!


Edit:
Guess we were typing at the same time!

 

Absolutely. For some reason, in my mind, this thread was a code reading issue. I lost focus for a moment. You are right about the powerbooster.

 

[QUOTE=94z07fx3;1574413470]I hope you are feeling better.

C = Current H = Historical

c12 means no trouble codes stored
h26 means that at some time in the past there was a voltage out of spec in the AIR system. I'd clear it and see if it ever returns before taking any action
h72 means that at some time in the past there was a problem with the ECM/CCM/EBCM talking to one another. Again, I'd clear it and see if it ever returns before taking any action
h83 means that at some time in the past the system thought that there was too little brake fluid. This is the cause of your ASR/ABS lights. The 92 has a known issue with false low brake fluid warnings. This was addressed in a TSB. There are some who switched out the enitre master cylinder and some who changed out the sensor in the master cylinder. The sensor costs about $10-$15 and is used in just about everything from GM over a 10 year period. I don't know if 92 got a bad batch of these or what but I had to replace the one in my wife's car (also a 92 C4) and since then (knock on wood) the code 83 has gone away.






Ok, Im taking it to my buddys house where we can bleed the system. I want to try that,I am not aversed to replacing whatever the problem is,.
Let me try to bleed the system starting with the MC and then hit the wheels and see if that clears up any issues and I will delete the codes stored and see where it gets me.
this ones making me crazy. my prelude stops on a dime, my sports car can barely stop. go figure. ok, well, let me go and try this, and ill get back to you guys.
If i look at the "Alldata" do you think it will have any valuable information about this also or is that a waste of time?
let me know, and ill def. hit you back when I have more info.
thanks
-Brian