1990 Corvette ABS Codes/Tech 1A Help
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
1990 Corvette ABS Codes/Tech 1A Help
I am working on a 90 corvette, it has an occasional ABS light flash on the dash. I have a Tech1A scanner that I tried to read the code(s) with. I was wondering if anyone who has a Tech1A can offer me some assistance.
To my Tech 1A with a GM 88-91 Brake Application Cartridge(P/N TK03030):
I connected the 14 pin DLC Cable (P/N 02001392) to the GM 12/14 Pin DLC Adapter (P/N 02001384), Bosch ABS Adapter (P/N TA00022) to the DLC connector to the car.
The readout still stays to install the Bosch ABS Adapter.
Any assistance would be greatly appreciated.
Thank you
To my Tech 1A with a GM 88-91 Brake Application Cartridge(P/N TK03030):
I connected the 14 pin DLC Cable (P/N 02001392) to the GM 12/14 Pin DLC Adapter (P/N 02001384), Bosch ABS Adapter (P/N TA00022) to the DLC connector to the car.
The readout still stays to install the Bosch ABS Adapter.
Any assistance would be greatly appreciated.
Thank you
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
That's gonna be 'iffy' getting to read the ABS....
back then, they changed each week.
Mercedes, and other German cars used the exact same ABS...so they may have what you need.
The short answer to the lite....these often come on intermittently from dirty reluctor rings or corroded sensor tips. The tips also get damaged from worn out wheel bearings that allow the reluctor to lean in enough to knock off the sensor tip. Grease and dirt collect on things.
Another common problem is water draining from the hatch weather strip (corner)directly onto or INTO the ABS storage compartment....this causes the relays to corrode and/or fail. Plugs also get wet and dirty.
back then, they changed each week.
Mercedes, and other German cars used the exact same ABS...so they may have what you need.
The short answer to the lite....these often come on intermittently from dirty reluctor rings or corroded sensor tips. The tips also get damaged from worn out wheel bearings that allow the reluctor to lean in enough to knock off the sensor tip. Grease and dirt collect on things.
Another common problem is water draining from the hatch weather strip (corner)directly onto or INTO the ABS storage compartment....this causes the relays to corrode and/or fail. Plugs also get wet and dirty.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
I am working on a 90 corvette, it has an occasional ABS light flash on the dash. I have a Tech1A scanner that I tried to read the code(s) with. I was wondering if anyone who has a Tech1A can offer me some assistance.
To my Tech 1A with a GM 88-91 Brake Application Cartridge(P/N TK03030):
I connected the 14 pin DLC Cable (P/N 02001392) to the GM 12/14 Pin DLC Adapter (P/N 02001384), Bosch ABS Adapter (P/N TA00022) to the DLC connector to the car.
The readout still stays to install the Bosch ABS Adapter.
Any assistance would be greatly appreciated.
Thank you
To my Tech 1A with a GM 88-91 Brake Application Cartridge(P/N TK03030):
I connected the 14 pin DLC Cable (P/N 02001392) to the GM 12/14 Pin DLC Adapter (P/N 02001384), Bosch ABS Adapter (P/N TA00022) to the DLC connector to the car.
The readout still stays to install the Bosch ABS Adapter.
Any assistance would be greatly appreciated.
Thank you
"If you are testing a 1990 VIN B.D, or Y body the Install Bosch ABS Adapter message will display as a reminder whether the adapter is installed or not."
To proceed with diagnostics:
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
Hope that helps.
Link here to some good ABS info, good luck troubleshooting.
http://www.corvetteactioncenter.com/...l#.UwxjZIWKU7k
Last edited by toptechx6; Feb 25, 2014 at 04:59 AM. Reason: Added information
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
That's gonna be 'iffy' getting to read the ABS....
back then, they changed each week.
Mercedes, and other German cars used the exact same ABS...so they may have what you need.
The short answer to the lite....these often come on intermittently from dirty reluctor rings or corroded sensor tips. The tips also get damaged from worn out wheel bearings that allow the reluctor to lean in enough to knock off the sensor tip. Grease and dirt collect on things.
Another common problem is water draining from the hatch weather strip (corner)directly onto or INTO the ABS storage compartment....this causes the relays to corrode and/or fail. Plugs also get wet and dirty.
back then, they changed each week.
Mercedes, and other German cars used the exact same ABS...so they may have what you need.
The short answer to the lite....these often come on intermittently from dirty reluctor rings or corroded sensor tips. The tips also get damaged from worn out wheel bearings that allow the reluctor to lean in enough to knock off the sensor tip. Grease and dirt collect on things.
Another common problem is water draining from the hatch weather strip (corner)directly onto or INTO the ABS storage compartment....this causes the relays to corrode and/or fail. Plugs also get wet and dirty.
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
Looking through a Tech 1 training handbook I found the following statement that may explain what you are seeing.
"If you are testing a 1990 VIN B.D, or Y body the Install Bosch ABS Adapter message will display as a reminder whether the adapter is installed or not."
To proceed with diagnostics:
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
Hope that helps.
Link here to some good ABS info, good luck troubleshooting.
http://www.corvetteactioncenter.com/...l#.UwxjZIWKU7k
"If you are testing a 1990 VIN B.D, or Y body the Install Bosch ABS Adapter message will display as a reminder whether the adapter is installed or not."
To proceed with diagnostics:
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
Hope that helps.
Link here to some good ABS info, good luck troubleshooting.
http://www.corvetteactioncenter.com/...l#.UwxjZIWKU7k
Thanks for the assistance. I do see the:
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
But when I Press any of those Functions on the TECCH 1A I get the message on the Tech 1A screen to install the Bosch ABS adapter (which is connected).
I was wondering if there is a specific application cartridge for ABS brakes or than the one I am using?
Thanks
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Thanks for the assistance. I do see the:
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
But when I Press any of those Functions on the TECCH 1A I get the message on the Tech 1A screen to install the Bosch ABS adapter (which is connected).
I was wondering if there is a specific application cartridge for ABS brakes or than the one I am using?
Thanks
Press F0=ABS Data List
Press F1=Code History
Press F2=Trouble Codes
Press F3=ABS Snapshot
Press F4=ABS Tests
But when I Press any of those Functions on the TECCH 1A I get the message on the Tech 1A screen to install the Bosch ABS adapter (which is connected).
I was wondering if there is a specific application cartridge for ABS brakes or than the one I am using?
Thanks
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Instructor
Joined: Apr 2007
Posts: 225
Likes: 1
From: Highland Village texas
per the tk03030b instructions edited to make shorter. should be the same as yours with the addition on this one to include 92.
1.ignition off
2.cartridge in master slot
3.power up tech1a
4.if display is up insert 12 pin adaptor and bosch abs adaptor.
5. install in adl
6.ignition on
There is a warning if tech 1a isnt powered up and menu shown before adl attachment and power up of auto. damage can occur to tech1a.
I would very carefully clean all conections of your adl adaptors and the tech1a cable. Get a can at the radio shack of electrical contact cleaner. make sure all the male pins are clean. Your adl on the car is clean. Go over this very carefully. Maybe one of your adaptors is bad? Use some spares. I see bosch adaptors new in plastic on the bay. same with the 12-14pin adaptor. Later down the line get a mass storage cartridge. It saves swapping cartridges and wear on your tech1a cartridge connector. Hope you get it figured out as these are great tools to have especially when working.
1.ignition off
2.cartridge in master slot
3.power up tech1a
4.if display is up insert 12 pin adaptor and bosch abs adaptor.
5. install in adl
6.ignition on
There is a warning if tech 1a isnt powered up and menu shown before adl attachment and power up of auto. damage can occur to tech1a.
I would very carefully clean all conections of your adl adaptors and the tech1a cable. Get a can at the radio shack of electrical contact cleaner. make sure all the male pins are clean. Your adl on the car is clean. Go over this very carefully. Maybe one of your adaptors is bad? Use some spares. I see bosch adaptors new in plastic on the bay. same with the 12-14pin adaptor. Later down the line get a mass storage cartridge. It saves swapping cartridges and wear on your tech1a cartridge connector. Hope you get it figured out as these are great tools to have especially when working.
Last edited by milsurpman; Feb 25, 2014 at 04:13 PM.
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
I use the Mass Storage Cartridge with the most current software, but as far as I know the MSC simply utilizes the same programming that should be in your ABS cartridge. I have an ABS training manual but it is for later models, I will give it a look to see if there is anything that may help.
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
per the tk03030b instructions edited to make shorter. should be the same as yours with the addition on this one to include 92.
1.ignition off
2.cartridge in master slot
3.power up tech1a
4.if display is up insert 12 pin adaptor and bosch abs adaptor.
5. install in adl
6.ignition on
There is a warning if tech 1a isnt powered up and menu shown before adl attachment and power up of auto. damage can occur to tech1a.
I would very carefully clean all conections of your adl adaptors and the tech1a cable. Get a can at the radio shack of electrical contact cleaner. make sure all the male pins are clean. Your adl on the car is clean. Go over this very carefully. Maybe one of your adaptors is bad? Use some spares. I see bosch adaptors new in plastic on the bay. same with the 12-14pin adaptor. Later down the line get a mass storage cartridge. It saves swapping cartridges and wear on your tech1a cartridge connector. Hope you get it figured out as these are great tools to have especially when working.
1.ignition off
2.cartridge in master slot
3.power up tech1a
4.if display is up insert 12 pin adaptor and bosch abs adaptor.
5. install in adl
6.ignition on
There is a warning if tech 1a isnt powered up and menu shown before adl attachment and power up of auto. damage can occur to tech1a.
I would very carefully clean all conections of your adl adaptors and the tech1a cable. Get a can at the radio shack of electrical contact cleaner. make sure all the male pins are clean. Your adl on the car is clean. Go over this very carefully. Maybe one of your adaptors is bad? Use some spares. I see bosch adaptors new in plastic on the bay. same with the 12-14pin adaptor. Later down the line get a mass storage cartridge. It saves swapping cartridges and wear on your tech1a cartridge connector. Hope you get it figured out as these are great tools to have especially when working.
Thanks milsurpman...I have a MSC, I have not tried it yet, I had the Brake Cartridge and figured that would be the best one. I will look at the connections for corrosion, etc. Next up is the MSC trial.
Thread Starter
Racer
Joined: May 2004
Posts: 411
Likes: 1
From: New Hampshire
FYI..Following up ....I tried all he suggestions (including using the MSC) still get the message to Install Bosch ABS Adapter.