1991Vette ABS light on and will not flash codes
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From: Portsmouth VA
1991Vette ABS light on and will not flash codes
I recently purchased a 1991 Corvette and am in the process of working out a couple of bugs. The ABS light is on. My Actron OBD 1 scanner also does ABS codes. When plugged in, the light does not flash any codes. I have also run a jumper wire from plug A to plug H to try to get the codes to flash and it will not. I have done all the obvious checks - brake fluid, fuses and the relays at the ECBM. Any thoughts on how to extract the error codes would be much appreciated. Also... When I test drove the car the light did go off briefly. It hasn't gone off since.
Race Director
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From: Anaheim CA
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From: Portsmouth VA
I have already seen both of these in my search for info. Which reminds me of a point I did not include... I've tired to clear the code by disconnecting the battery and with my scan tool and the light stays on.
Team Owner
Joined: Sep 2003
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I recently purchased a 1991 Corvette and am in the process of working out a couple of bugs. The ABS light is on. My Actron OBD 1 scanner also does ABS codes. When plugged in, the light does not flash any codes. I have also run a jumper wire from plug A to plug H to try to get the codes to flash and it will not. I have done all the obvious checks - brake fluid, fuses and the relays at the ECBM. Any thoughts on how to extract the error codes would be much appreciated. Also... When I test drove the car the light did go off briefly. It hasn't gone off since.
Do you have a FSM? It's pretty well explained which codes won't display, which will and why you can't clear specific codes under certain circumstances.
A Tech1 with the proper Bosch adapter should work.
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From: Portsmouth VA
Your Actron might do ABS but I doubt the '91 Corvette, a Tech1 requires a Bosch adapter to do it so I doubt your "generic" could accomplish the task. Not all codes are available using "flash diagnostics" and there are specific circumstances for clearing codes.
Do you have a FSM? It's pretty well explained which codes won't display, which will and why you can't clear specific codes under certain circumstances.
A Tech1 with the proper Bosch adapter should work.
Do you have a FSM? It's pretty well explained which codes won't display, which will and why you can't clear specific codes under certain circumstances.
A Tech1 with the proper Bosch adapter should work.
Team Owner
Joined: Sep 2003
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Try the "for sale" section here and eBay before going to Helm. Make sure you purchase a complete 2 - book package with "RED" covers if you're shopping.
Melting Slicks
Joined: Apr 2005
Posts: 3,245
Likes: 165
From: Folsom CA
AFAIK you will need a Tech1 to reset the ABS code.
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
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Joined: Jul 2014
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From: Portsmouth VA
AFAIK you will need a Tech1 to reset the ABS code.
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
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From: Portsmouth VA
1991 Corvette ABS Solenoid Valve Relay
AFAIK you will need a Tech1 to reset the ABS code.
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
I had a failed relay in my '90 and here a link to how I McGuivered a $7.50 fix to a $125 problem.
http://www.zr1.net/forum/showpost.ph...0&postcount=17
http://www.zr1.net/forum/showpost.ph...1&postcount=18
'Crabs
I took my 91 to the Chevy dealer for a Tech 1 scan and here was the result:
27791 CODE 63 SOLENOID VALVE RELAY FAULT SET DIAG FOUND SOLENOID VALVE REALY INOP, IDENTIFIED AS PART OF BRAKE PRESSURE MODULATING VALVE.
They also noted:
ALL PARTS DISCONTINUED FROM GM, MAY BE ABLE TO REPLACE REALY SEPARATELY OR WITH BPMV AS COMPLETE UNIT.
They claimed to have extensively searched GM and aftermarket resources and could not find the replacement relay. They stuck me for the price of a scan and its still not fixed.
This appears to be the same issue your links address. What replacement relay did you use? A few more details would be greatly appreciated.
Melting Slicks
Joined: Apr 2005
Posts: 3,245
Likes: 165
From: Folsom CA
PM Send with more details.
Relay is a P&B V4F-15H11 24v automotive relay, the socket was an off the shelf in the "DIY" section at my local Kragen Auto Parts.
You will need a Tech-1 with appropriate ABS module to reset the codes, AFAIK no aftermarket code read will do this.
'Crabs
Relay is a P&B V4F-15H11 24v automotive relay, the socket was an off the shelf in the "DIY" section at my local Kragen Auto Parts.
You will need a Tech-1 with appropriate ABS module to reset the codes, AFAIK no aftermarket code read will do this.
'Crabs
Crabs,
I took my 91 to the Chevy dealer for a Tech 1 scan and here was the result:
27791 CODE 63 SOLENOID VALVE RELAY FAULT SET DIAG FOUND SOLENOID VALVE REALY INOP, IDENTIFIED AS PART OF BRAKE PRESSURE MODULATING VALVE.
They also noted:
ALL PARTS DISCONTINUED FROM GM, MAY BE ABLE TO REPLACE REALY SEPARATELY OR WITH BPMV AS COMPLETE UNIT.
They claimed to have extensively searched GM and aftermarket resources and could not find the replacement relay. They stuck me for the price of a scan and its still not fixed.
This appears to be the same issue your links address. What replacement relay did you use? A few more details would be greatly appreciated.
I took my 91 to the Chevy dealer for a Tech 1 scan and here was the result:
27791 CODE 63 SOLENOID VALVE RELAY FAULT SET DIAG FOUND SOLENOID VALVE REALY INOP, IDENTIFIED AS PART OF BRAKE PRESSURE MODULATING VALVE.
They also noted:
ALL PARTS DISCONTINUED FROM GM, MAY BE ABLE TO REPLACE REALY SEPARATELY OR WITH BPMV AS COMPLETE UNIT.
They claimed to have extensively searched GM and aftermarket resources and could not find the replacement relay. They stuck me for the price of a scan and its still not fixed.
This appears to be the same issue your links address. What replacement relay did you use? A few more details would be greatly appreciated.