problem to connect with OBD2 diagnostic interface adapter OBD1 GM
Thread Starter
Junior Member
Joined: Mar 2007
Posts: 17
Likes: 0
From: Montargis, FRANCE
Car: Camaro 1986
Engine: v6 2.8L MPFI
Transmission: Manual 5 speed
problem to connect with OBD2 diagnostic interface adapter OBD1 GM
hi, I have an ELM327 OBD2 diagnostic interface and bought an adapter OBD2 to OBD1 ALDL GM EBAY, my OBD2 works fine, but when I connect the adapter I have no connection. The adapter is sold to work from a OBD2 to OBD1 ALDL GM vehicles, so it should work on my Camaro 2.8L V6, but this is not the case.
What can it come?
And this a scam or is it the adapter down, or I miss there another object to make it work?
Please excuse my broken English, but help me please.
My OBD2 diagnostic interface:
My GM OBD1 OBD2 adapter:
What can it come?
And this a scam or is it the adapter down, or I miss there another object to make it work?
Please excuse my broken English, but help me please.
My OBD2 diagnostic interface:
My GM OBD1 OBD2 adapter:
Last edited by boyerfsdp45; Oct 15, 2011 at 01:27 PM.
Supreme Member
Joined: Apr 2010
Posts: 1,015
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From: Modesto, California
Car: 88 Firebird Formula
Engine: LO5 5.7 TBI/Ebl Flash
Transmission: 700R4
Axle/Gears: 2.73 stock rear end
Re: problem to connect with OBD2 diagnostic interface adapter OBD1 GM
I have never heard of a OBDII to OBDI. But I could be mistaken.
Joined: Mar 2006
Posts: 4,367
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: problem to connect with OBD2 diagnostic interface adapter OBD1 GM
I know that some OBD1 cables work with early OBD2 or OBD1.5, so this has a possibility of working.
What program are you using to connect to the OBD1 vehicle?
What program are you using to connect to the OBD1 vehicle?
Thread Starter
Junior Member
Joined: Mar 2007
Posts: 17
Likes: 0
From: Montargis, FRANCE
Car: Camaro 1986
Engine: v6 2.8L MPFI
Transmission: Manual 5 speed
Re: problem to connect with OBD2 diagnostic interface adapter OBD1 GM
I have tried various programs:
winaldl
pcmscan
scanxl and scanxlelm
datamaster
tunerpro and tunerproRT
and 3 other european programs
i have test ALDL TEST
and nothing
but I just watched adapter pin and nothing matches between OBD1 and OBD2 connector adapter:
ground ALDL is on ISO 9141-2 K LINE OBD2 pin
8192 Baud Data ALDL is on a unused OBD2 pin
...
Finally, it can not work like that
winaldl
pcmscan
scanxl and scanxlelm
datamaster
tunerpro and tunerproRT
and 3 other european programs
i have test ALDL TEST
and nothing
but I just watched adapter pin and nothing matches between OBD1 and OBD2 connector adapter:
ground ALDL is on ISO 9141-2 K LINE OBD2 pin
8192 Baud Data ALDL is on a unused OBD2 pin
...
Finally, it can not work like that
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