Info about Tech 1 + 2 scanner
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
Info about Tech 1 + 2 scanner
greetings,
....i was "thumbing" though the search engine for some posts and stumbled on a pertinent post or two...need info about a tech 1 scanner..i have heard of a tech 1 and tech 2 scanner for activating the valves on an abs brake system and resetting the abs computer.....does or will a tech 1 reset the computer on an 88 abs computer?...whom makes it and approx cost of scanner?....i have been chasing a brake problem for 3 years and may have to bite the bullet and invest a few bucks in the tool.....whom is the manufacturer?.....thanks!
....i was "thumbing" though the search engine for some posts and stumbled on a pertinent post or two...need info about a tech 1 scanner..i have heard of a tech 1 and tech 2 scanner for activating the valves on an abs brake system and resetting the abs computer.....does or will a tech 1 reset the computer on an 88 abs computer?...whom makes it and approx cost of scanner?....i have been chasing a brake problem for 3 years and may have to bite the bullet and invest a few bucks in the tool.....whom is the manufacturer?.....thanks!
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
The Tech I and Tech II are the original GM dealership scan tools, manufactured by Vetronix, now a division of Bosch. The Tech 1 is no longer in production but can be found on e-bay usually for 3 to 4 hundred dollars depending on cartridges and accessories. The Tech II I believe is still in production but it is much more expensive.
The link below should give you some more information but you may need to follow more links to find exactly what you want.
http://www.vetronix.com/
I have a Tech I and unlike many cheap aftermarket scan tools it is bidirectional and can actuate many vehicle output devices but capabilities are dependent on what cartridges and software is available.
A search on e-bay for GM Tech I should find some listings, hope that helps.
The link below should give you some more information but you may need to follow more links to find exactly what you want.
http://www.vetronix.com/
I have a Tech I and unlike many cheap aftermarket scan tools it is bidirectional and can actuate many vehicle output devices but capabilities are dependent on what cartridges and software is available.
A search on e-bay for GM Tech I should find some listings, hope that helps.
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
The Tech I and Tech II are the original GM dealership scan tools, manufactured by Vetronix, now a division of Bosch. The Tech 1 is no longer in production but can be found on e-bay usually for 3 to 4 hundred dollars depending on cartridges and accessories. The Tech II I believe is still in production but it is much more expensive.
The link below should give you some more information but you may need to follow more links to find exactly what you want.
http://www.vetronix.com/
I have a Tech I and unlike many cheap aftermarket scan tools it is bidirectional and can actuate many vehicle output devices but capabilities are dependent on what cartridges and software is available.
A search on e-bay for GM Tech I should find some listings, hope that helps.
The link below should give you some more information but you may need to follow more links to find exactly what you want.
http://www.vetronix.com/
I have a Tech I and unlike many cheap aftermarket scan tools it is bidirectional and can actuate many vehicle output devices but capabilities are dependent on what cartridges and software is available.
A search on e-bay for GM Tech I should find some listings, hope that helps.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Kind of a shame we aren't a little closer, you would be welcome to try my Tech I on the brake issue. Next time I'm out in the garage I'll hook it up to my Vette to see what tests are available on the ABS then send you a PM with my findings.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Unforturnately, neither will active the '88 ABS - there's no link up. Your unit requires a special tester that plugs into the ABS Control Module - I forget the Manufacturer (Bosch?) but there's been several posts about it - notably that it too is out of production and few if any servicing dealers even have one.
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
Unforturnately, neither will active the '88 ABS - there's no link up. Your unit requires a special tester that plugs into the ABS Control Module - I forget the Manufacturer (Bosch?) but there's been several posts about it - notably that it too is out of production and few if any servicing dealers even have one.
Last edited by Da Mail Man; Oct 7, 2007 at 07:47 PM.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
You can usually diagnose it without it - all it does is spit out messages about where to look. The actual tests take a DVM and a test light. Service Manual - 8A44 - has the procedures for each component. May be a bit tedious, but going through the Relays might be a good place to start ruling out/confirming things.
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Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
You can usually diagnose it without it - all it does is spit out messages about where to look. The actual tests take a DVM and a test light. Service Manual - 8A44 - has the procedures for each component. May be a bit tedious, but going through the Relays might be a good place to start ruling out/confirming things.
......i was thinking it terms of trying to actuate the valves on the abs and/or to reset the abs computer although, how the hell would i know if it needs resetting??
...no abs lights on dash and self checks....i though somewhere along the line i may have purchased an abs computer (i know i have a spare abs) but, will have to check....if it turns out that i have a spare computer, i may just substitute it to see what happens.....
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
I'm not sure about the '88, but on my '92, my Tech-1A with the chassis cartridge can test quite a bit in the ASR/ABS.
Not only does it read the data in real-time and take snapshots to freeze the data for intermittent problems, but the bi-directional capability can be used for testing.
As one example, you can put all four wheels in the air and command each individual wheel to be "ABS active" to determine if the ABS is working or not.
With the engine started so the power brakes are functioning, when you command each wheel to be ABS active, with your foot firmly planted on the brake pedal, that ABS active wheel should be able to be turned by hand by an assistant because of the ABS function. By testing each wheel that way, you will know if each wheel's ABS is working.
There are many other ASR/ABS tests that can be done.
One test is a nice way to find out if the wheel speed sensors are working correctly -- simply drive down a straight road and monitor all four wheel speed sensors and the speedometer at the same time (all four wheels show on one display), they should all read the same speed.
If they don't, you have a problem.
Tom Piper
Not only does it read the data in real-time and take snapshots to freeze the data for intermittent problems, but the bi-directional capability can be used for testing.
As one example, you can put all four wheels in the air and command each individual wheel to be "ABS active" to determine if the ABS is working or not.
With the engine started so the power brakes are functioning, when you command each wheel to be ABS active, with your foot firmly planted on the brake pedal, that ABS active wheel should be able to be turned by hand by an assistant because of the ABS function. By testing each wheel that way, you will know if each wheel's ABS is working.
There are many other ASR/ABS tests that can be done.
One test is a nice way to find out if the wheel speed sensors are working correctly -- simply drive down a straight road and monitor all four wheel speed sensors and the speedometer at the same time (all four wheels show on one display), they should all read the same speed.
If they don't, you have a problem.
Tom Piper
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
I'm not sure about the '88, but on my '92, my Tech-1A with the chassis cartridge can test quite a bit in the ASR/ABS.
Not only does it read the data in real-time and take snapshots to freeze the data for intermittent problems, but the bi-directional capability can be used for testing.
As one example, you can put all four wheels in the air and command each individual wheel to be "ABS active" to determine if the ABS is working or not.
With the engine started so the power brakes are functioning, when you command each wheel to be ABS active, with your foot firmly planted on the brake pedal, that ABS active wheel should be able to be turned by hand by an assistant because of the ABS function. By testing each wheel that way, you will know if each wheel's ABS is working.
There are many other ASR/ABS tests that can be done.
One test is a nice way to find out if the wheel speed sensors are working correctly -- simply drive down a straight road and monitor all four wheel speed sensors and the speedometer at the same time (all four wheels show on one display), they should all read the same speed.
If they don't, you have a problem.
Tom Piper
Not only does it read the data in real-time and take snapshots to freeze the data for intermittent problems, but the bi-directional capability can be used for testing.
As one example, you can put all four wheels in the air and command each individual wheel to be "ABS active" to determine if the ABS is working or not.
With the engine started so the power brakes are functioning, when you command each wheel to be ABS active, with your foot firmly planted on the brake pedal, that ABS active wheel should be able to be turned by hand by an assistant because of the ABS function. By testing each wheel that way, you will know if each wheel's ABS is working.
There are many other ASR/ABS tests that can be done.
One test is a nice way to find out if the wheel speed sensors are working correctly -- simply drive down a straight road and monitor all four wheel speed sensors and the speedometer at the same time (all four wheels show on one display), they should all read the same speed.
If they don't, you have a problem.
Tom Piper
....since i have crappy brakes (there is a very long thread up and running which i am sure you have seen) and the abs only "distributes" brake pressure to each wheel based on a "skid" (so-to-speak), would a defective computer, or an abs unit with a valve or two "hung up" be a contributing factor to those crappy brakes?...i have plenty of fluid, etc and since it "directs" fluid, would it be reasonable to say that it would/does?
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Later Years usually link up through the CCM/PCM - non-existant on the '88.
First step is to confirm that the ABS light works - self check at start up and you should feel the pedal pulse (once) as you back it out of driveway. If you have that much, there's little to diagnose. I'm sure you can make it work manually - just follow the schematic and ground a relay. Seems though, that even if you forced it to operate manually, you wouldn't gain much info. Might be better to find some empty roadway and then slam on the brakes (and I think GM actually recommended this on some of these early units). You could try it disabled (disconnect the module harness) and enabled, but given the design (it's fail safe - when it's broken, it doesn't work at all) and your statement that you don't have the light staying on, l'd be surprised if has anything to do with the performance of your brakes.
First step is to confirm that the ABS light works - self check at start up and you should feel the pedal pulse (once) as you back it out of driveway. If you have that much, there's little to diagnose. I'm sure you can make it work manually - just follow the schematic and ground a relay. Seems though, that even if you forced it to operate manually, you wouldn't gain much info. Might be better to find some empty roadway and then slam on the brakes (and I think GM actually recommended this on some of these early units). You could try it disabled (disconnect the module harness) and enabled, but given the design (it's fail safe - when it's broken, it doesn't work at all) and your statement that you don't have the light staying on, l'd be surprised if has anything to do with the performance of your brakes.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
SunCR sounds like you are describing a "breakout box" used for diagnosis on the earlier cars. Is the 88 model ABS an entirely different system compared to the later cars or will it just not communicate with the Tech 1? I suspect it may be a different system entirely since my 93 has ASR.
Thanks for the insight.
Thanks for the insight.
Pro
Joined: Jun 2007
Posts: 577
Likes: 0
From: the best car on earth ,vettes are best
hi guys,
my spx/otc brand Nemisys 3774 scan tool reads/sets abs info on gm cars actually.
this scan tool is really very good but costly,$800 u.s dollars.
www.nemisysotc.com
cheers
shae
my spx/otc brand Nemisys 3774 scan tool reads/sets abs info on gm cars actually.
this scan tool is really very good but costly,$800 u.s dollars.
www.nemisysotc.com
cheers
shae
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
On the '92, the ASR/ABS computer goes through a very thorough self test as soon as the vehicle reaches 4 mph each time the engine is started -- this test operates the pump and the valves.
If the test fails, the trouble light will display.
Tom Piper
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
Later Years usually link up through the CCM/PCM - non-existant on the '88.
First step is to confirm that the ABS light works - self check at start up and you should feel the pedal pulse (once) as you back it out of driveway. If you have that much, there's little to diagnose. I'm sure you can make it work manually - just follow the schematic and ground a relay. Seems though, that even if you forced it to operate manually, you wouldn't gain much info. Might be better to find some empty roadway and then slam on the brakes (and I think GM actually recommended this on some of these early units). You could try it disabled (disconnect the module harness) and enabled, but given the design (it's fail safe - when it's broken, it doesn't work at all) and your statement that you don't have the light staying on, l'd be surprised if has anything to do with the performance of your brakes.
First step is to confirm that the ABS light works - self check at start up and you should feel the pedal pulse (once) as you back it out of driveway. If you have that much, there's little to diagnose. I'm sure you can make it work manually - just follow the schematic and ground a relay. Seems though, that even if you forced it to operate manually, you wouldn't gain much info. Might be better to find some empty roadway and then slam on the brakes (and I think GM actually recommended this on some of these early units). You could try it disabled (disconnect the module harness) and enabled, but given the design (it's fail safe - when it's broken, it doesn't work at all) and your statement that you don't have the light staying on, l'd be surprised if has anything to do with the performance of your brakes.
Later Years usually link up through the CCM/PCM - non-existant on the '88.
First step is to confirm that the ABS light works - self check at start up and you should feel the pedal pulse (once) as you back it out of driveway.
***yes, the pedal does vibrate/pulse/drop when i back out and always has...
Seems though, that even if you forced it to operate manually, you wouldn't gain much info.
***rather figured that...
Might be better to find some empty roadway and then slam on the brakes (and I think GM actually recommended this on some of these early units).
***i really haven't done this but, a few months ago i had a panic stop at which time the abs aparently did engage by the "pounding" i heard from teh car's undercarriage, however, since i was 12'' from the back of someones' bumper, i didn't look at the dash to see the abs light off...
You could try it disabled (disconnect the module harness) and enabled, but given the design (it's fail safe - when it's broken, it doesn't work at all) and your statement that you don't have the light staying on, l'd be surprised if has anything to do with the performance of your brakes.
***agreed...will try it as an excercise in futility...i did however, disconnect the brake booster vacuum hose and had virtually non existant brakes....ugh!
Last edited by Da Mail Man; Oct 8, 2007 at 08:41 AM.
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
....that has already been addressed in the last 11 pages....i appreciate the question but, all has been checked to be in good working order.....
