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Still looking for help with ALDL

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Old Dec 22, 2002 | 09:57 PM
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Still looking for help with ALDL

I am sure there is someone out there with a 94-95 Corvette that can help me.
Our 95 Cavalier has a 16 pin plug but is not OBD2. I read this is the case with the 94-95 Corvetts as well. How do you read the codes?


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Old Dec 22, 2002 | 10:31 PM
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I'm getting closer!
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Old Dec 23, 2002 | 08:22 PM
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From: great lakes
hmm 0thats a bit odd. i think you could try looking for a pin with roughly 5v. it seems that most wake up lines are 5v brought to ground on gm obd1 cars. im not sure you wont fry anything trying it so be careful. ill poke my nose into our snap on scanner book ands see what the wake up ses code flash or feild service mode procedure is.
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Old Dec 24, 2002 | 07:16 AM
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Doesn't anyone have a 95 Camaro or Firebird set up like this around here????
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Old Dec 24, 2002 | 12:40 PM
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if the above schematic is correct take pim5 of the obd2 connector and ground it. this will set feild service mode. i couldnt find anything in the snap on users manual sorry. as stated above if im wrong about pin5 to ground your sol.
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Old Dec 24, 2002 | 01:02 PM
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Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
Re: Still looking for help with ALDL

Originally posted by Chop_Top
I am sure there is someone out there with a 94-95 Corvette that can help me.
Our 95 Cavalier has a 16 pin plug but is not OBD2. I read this is the case with the 94-95 Corvetts as well. How do you read the codes?


For the older rectangular 12-pin style, the under dash connector has the following pinout:

F E D C B A
G H J K L M

A = Ground
B = Mode Select
M = Serial Data
(on some older cars E = Serial Data

For the OBDII style connector (16-pin D shaped), it has the following pinout:

01 02 03 04 05 06 07 08
09 10 11 12 13 14 15 16

05 = Ground
06 = Mode Select
09 = Serial Data
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Old Dec 24, 2002 | 01:23 PM
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Re: Re: Still looking for help with ALDL

Originally posted by SATURN5
For the older rectangular 12-pin style, the under dash connector has the following pinout:

F E D C B A
G H J K L M

A = Ground
B = Mode Select
M = Serial Data
(on some older cars E = Serial Data

For the OBDII style connector (16-pin D shaped), it has the following pinout:

01 02 03 04 05 06 07 08
09 10 11 12 13 14 15 16

05 = Ground
06 = Mode Select
09 = Serial Data
Thanx! you are Da Man! My van uses the E version, this is why the Auto Xray made no sense to me! So I should be able to flash 5-6 and get the ses lamp to work... I will have to re-wire my cable next.
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Old Dec 24, 2002 | 06:45 PM
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Re: Re: Re: Still looking for help with ALDL

Originally posted by Chop_Top
Thanx! you are Da Man! My van uses the E version, this is why the Auto Xray made no sense to me! So I should be able to flash 5-6 and get the ses lamp to work... I will have to re-wire my cable next.
Opon further review, I see no connector in pin six slot....
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Old Dec 24, 2002 | 07:22 PM
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Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
Re: Re: Re: Re: Still looking for help with ALDL

Originally posted by Chop_Top
Opon further review, I see no connector in pin six slot....
Apparently its not needed on your application.

5 is ground, 9 is serial data, 16 is +12 volts if you need it.

This info is crossreferenced to several different sources.

http://www.techedge.com.au/vehicle/aldl8192/8192hw.htm
http://www.mindspring.com/~amattei/techinfo.htm
http://www.geocities.com/MotorCity/Shop/1624/aldlif.jpg


cheers and Merry Christmas, Bob
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Old Dec 24, 2002 | 08:50 PM
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From: great lakes
looks like pin 5 is ground so nothing in 6 hhhmmm check for 5 volts the remaining pins.
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Old Dec 25, 2002 | 07:35 AM
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We got brave and tried to jump 4&5 thinking just typo last night.
That did not do anything at all that we could see. I will have to look for the 5 volt wire next.
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