OBD II software
Thread Starter
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
OBD II software I bought some OBD II software for $75 for my F-body LS1 about a year ago.
My 96 BMW, which also has the OBD 2 system, threw a code recently.
Can I use my F-body software for this analysis?
If no, were can I get this code read?
Thanks...
My 96 BMW, which also has the OBD 2 system, threw a code recently.
Can I use my F-body software for this analysis?
If no, were can I get this code read?
Thanks...
TECH Addict
Joined: Sep 2003
Posts: 2,065
Likes: 0
From: Atlanta, GA
yes of course they will pull the codes but not erase them.
i think my bro found a harbor freight sale and got a hand held obd2 code reader for $19 dunno if they are on sale that much any more, but worth having.
i think my bro found a harbor freight sale and got a hand held obd2 code reader for $19 dunno if they are on sale that much any more, but worth having.
On The Tree
Joined: Oct 2002
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From: Tampa, Florida
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Verdad Gallardo Thread Starter
TECH Veteran
Joined: Aug 2002
Posts: 4,055
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From: Hartsdale, NY
Apparently, there are 3 different OBD2 systems. The VPW system is used by GM; the ISO system is used by BMW.
I bought the ISO version of this software for $122.
www.obd-2.com
I bought the ISO version of this software for $122.
www.obd-2.com
TECH Addict
Joined: Sep 2003
Posts: 2,065
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From: Atlanta, GA
yeah, the iso version is usually a max-232 chip or an opto-isolator. I've built both, each consisted of bout $3 in parts plus an adapter to the plug if you aren't creative.
ISO = basically serial port but different voltages and baud rate.
VPW and the ford require a slightly more complex handshake.
for instance the ole audi a4 i had used iso but 10400 baud rate serial port. i dunno why the americans have to choose a more complex protocol, maybe its faster who knows. nowadays theres a single chip made (ASIC) that can do all 3 for like $15 in qty or so. But the board design is a bit more complex.
almost all cars from the EU use ISO since they almost all run bosch motronic ME, very sophisticated ecm, very common platform.
I guess thats kinda like how gm use(d) one similar ecm for most applications , no point in rewriting the o/s for each model car.
ISO = basically serial port but different voltages and baud rate.
VPW and the ford require a slightly more complex handshake.
for instance the ole audi a4 i had used iso but 10400 baud rate serial port. i dunno why the americans have to choose a more complex protocol, maybe its faster who knows. nowadays theres a single chip made (ASIC) that can do all 3 for like $15 in qty or so. But the board design is a bit more complex.
almost all cars from the EU use ISO since they almost all run bosch motronic ME, very sophisticated ecm, very common platform.
I guess thats kinda like how gm use(d) one similar ecm for most applications , no point in rewriting the o/s for each model car.
