Gm obdii
Thread Starter
Super Moderator
Joined: Oct 2009
Posts: 70
Likes: 0
Gm obdii
GM OBDII port wiring:
The OBD2 Connector uses Pins 2, 4, 5, 16.
2- Serial Data Wire(Tune/Diagnostic Wire) from the ECU.
4,5- Grounds
16- Constant Power off of Battery
The Miata OBDII terminals can be popped out and swapped in the connector and then the data wire run from the GM ECU to pin 2. You don't need this for the car to run obviously, but it has to be set up this way for emissions and to use HPTuners or EFILive for tuning.
The OBD2 Connector uses Pins 2, 4, 5, 16.
2- Serial Data Wire(Tune/Diagnostic Wire) from the ECU.
4,5- Grounds
16- Constant Power off of Battery
The Miata OBDII terminals can be popped out and swapped in the connector and then the data wire run from the GM ECU to pin 2. You don't need this for the car to run obviously, but it has to be set up this way for emissions and to use HPTuners or EFILive for tuning.
V8 Miata Fan
Joined: Oct 2009
Posts: 81
Likes: 0
From: Dallas
GM OBDII port wiring:
The OBD2 Connector uses Pins 2, 4, 5, 16.
2- Serial Data Wire(Tune/Diagnostic Wire) from the ECU.
4,5- Grounds
16- Constant Power off of Battery
The Miata OBDII terminals can be popped out and swapped in the connector and then the data wire run from the GM ECU to pin 2. You don't need this for the car to run obviously, but it has to be set up this way for emissions and to use HPTuners or EFILive for tuning.
The OBD2 Connector uses Pins 2, 4, 5, 16.
2- Serial Data Wire(Tune/Diagnostic Wire) from the ECU.
4,5- Grounds
16- Constant Power off of Battery
The Miata OBDII terminals can be popped out and swapped in the connector and then the data wire run from the GM ECU to pin 2. You don't need this for the car to run obviously, but it has to be set up this way for emissions and to use HPTuners or EFILive for tuning.
Sorry, I had been looking for that......And I had a Rod Stewart moment..LOL
V8 Miata Fan
Joined: Nov 2009
Posts: 62
Likes: 0
From: Mountains of Arizona
Frank do you know what would be involved to intergate Cruise Control functions with my 2005 GTO FBW based PCM system? My Miata already had Mazda cruise control so I have retained all the OEM Miata switchs in my car.
Thanks
- Lee
Thanks
- Lee
Thread Starter
Super Moderator
Joined: Oct 2009
Posts: 70
Likes: 0
I've only messed with HPtuners a little bit when troubleshooting my car and to be honest, I yanked out my cruise control in the Miata as I never use it, even on 2 hour country drives to golf outings.
Sorry I can't help you there.
Frank
V8 Miata Fan
Joined: Nov 2009
Posts: 62
Likes: 0
From: Mountains of Arizona
That's OK, it's just a "wish we had" request from me and Geoff (SafetyFast). I think my guy in Florida probably has the answers, I'm just a little tired of working on my car, I'm enjoying driving it alot.
