ODB1 with adapter + ODB2 reader
Thread Starter
Member
Joined: Apr 2019
Posts: 236
Likes: 8
From: France
Year: 1987
Model: Cherokee (XJ)
Engine: 4.0
I am wondering if the pin adapters you find on eBay would allow us to read more data about our Renix XJ.
I know we have other ways to read codes.
But what I want is
- temp from sensors
- real RPMs (I try to fix low idle BUT isb’t It just the DashBoard that reads an incorrect value ??)
- maybe oil pressure
- etc...
I know we have other ways to read codes.
But what I want is
- temp from sensors
- real RPMs (I try to fix low idle BUT isb’t It just the DashBoard that reads an incorrect value ??)
- maybe oil pressure
- etc...
Seasoned Member
Joined: Dec 2014
Posts: 419
Likes: 12
From: Oregon (Wetside)
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0l
Here is an article on the ECU data stream. https://nickintimedesign.com/renix-4l-ecu-datastream/ .
Without hooking up my MT2500, just going from memory, It does show all the values mentioned in the article. I am not sure what reader you have, but the pin descriptions are in the article. Building a reader for specific pins is over my head
.
Without hooking up my MT2500, just going from memory, It does show all the values mentioned in the article. I am not sure what reader you have, but the pin descriptions are in the article. Building a reader for specific pins is over my head
Seasoned Member
Joined: Dec 2014
Posts: 419
Likes: 12
From: Oregon (Wetside)
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0l
The Renix output is rx/tx serial output, and not compatible with the OBDI/II wiring or protocols. As mentioned, there are no codes to read, but if you're crafty you could build an adapter and some software to watch the data stream on a PC or smartphone. Hmmm, now you've got me interested in whether I could grab a cheap serial->bluetooth adapter and write some code on the laptop to parse the data stream. Might be a winter, hating to go out in the cold kinda project.
CF Veteran


Joined: Mar 2015
Posts: 1,203
Likes: 155
From: Northern CT
Year: 1995
Model: Cherokee
Engine: Turbo 4.0
The Renix output is rx/tx serial output, and not compatible with the OBDI/II wiring or protocols. As mentioned, there are no codes to read, but if you're crafty you could build an adapter and some software to watch the data stream on a PC or smartphone. Hmmm, now you've got me interested in whether I could grab a cheap serial->bluetooth adapter and write some code on the laptop to parse the data stream. Might be a winter, hating to go out in the cold kinda project.
Isn't that what Nick did with the REMII?
Yeah, he's done all the hard work reverse engineering the data stream. I see he has a bluetooth add-on as well, that looks likes it transmits processed data from the REM. I'm thinking I could skip buying the $140 REM plus the add-on, and cobble together something for under $10 in parts. I don't really need to see the numbers while I'm driving. I see he's also got a fancy AW4 shifter module too.
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