UPDATE 7/27/13
Since the first iteration of this wiring chart over a year ago I have worked out a few bugs and made some updates:
-P0500 OBD-II Trouble Code: Basically in my car the signal from the speed sensor was not strong enough to the DME and it read this as a fault with the speed sensor. To at least get rid of the check engine light I connected pin 14 xC101 (VSS) to pin 9 x20 (ABS). This gave the DME a strong enough signal and stopped the check engine light. The amplification is still not large enough for an actual speed reading, this was verified by the referee at the CA BAR station who said at 25mph actual the DME was only reading about 3mph. Note: This seems to be different across the board! Not sure why but more info can be found here: http://www.r3vlimited.com/board/showthread.php?t=285584
-Oil Level Sensor: I had my Full and Low wires backwards. This has since been corrected and is working fine.
I have removed the old chart as it has some incorrect info but it is still available here
I am happy to report I have no check engine light and no check panel lights. I am still short of being legal in CA for smog due to my evap sensor not self testing and going into a "ready" state but all other OBDII equipment is working properly. I'll have to trouble shoot this at another time as I am happy with everything as it stands today.
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I’m at work today so I will update this post with more info as I have time and confirm that this all actually works.
First of all I need to give some respect to a few fellow r3ver’s who have helped me along with some of the unknowns or steered a newb in the right direction for obd2 conversion
Wanganstyle
328ijunkie
Nando
flyboyx
etxxz
And probably a few others
Hope this isn’t too stupid, but I seriously would not have been able to do this without some direction and to have it start up on the first try made all the hard work worth it.
The info in the sticky threads are like a 24v swap bible so cheers to the guys who were here before me and were cool enough to share. I’m not bringing anything brand new to the table here, but I want to make some contribution so I will share my wiring info and make my spreadsheet available to anyone who asks as well as a few personal lessons learned when I have more time. I am not however responsible for how you use this information and make no claims it is fool proof.
Wiring Adaptor:
One caveat at the present time, I have not finished wiring my obd2 fuel tank pressure sensor, carbon canister or diagnostic plug. Nor is my car moving as I have been slowed by work, vacation and waiting three weeks for a driveshaft that turned out to be rubbish. If all goes well the e30 will be rolling down the streets in less than a week.
So here you go, time to find out from you guys if I made any mistakes! My labels may not be perfect but they worked for me.
I made my own adaptor after deciding to go obd2 as I wanted more control over the wiring, otherwise my harness would have gone to Dave at Markert Motor Werks to get the nice pin treatment.
STUDY THE ETM’S!!! The information is there, if you have a question ask, the guys here know their shit. Wire colors change all the time, even between cars in the same model year. I pulled my adaptor C101 from a ’90 vert and numerous wire colors were different from my ’90 coupe. Identifying the pins and their function correctly is the sure way to keep from setting your car on fire. DO NOT take my wire color notes as a blanket guide, they are specific to my adaptor.
I used some connector covers from the junkyard and 1” shrink wrap from harbor freight. Buy the $5 set with four different sizes each in 48” length, but far the best deal out there. I also used the heat shrink connectors, those worked out pretty sweet. I used a beer coaster as a shield when using the heat gun to keep from toasting other wires. I did screw up and missed one wire but it isn’t going to ruin my day.
The exposed wires are for the obd2 system, oil level sensor and temp gauge which I wired while hooking up the harness to get correct wire lengths. I poked the obd2 wires through the firewall below the fuse box and will have my own custom fuse box below the dash for the three additional fuses and power. I haven’t decided where to place the diagnostic connector yet but probably below the drivers side dash.
More to come another day.
Cheers
Since the first iteration of this wiring chart over a year ago I have worked out a few bugs and made some updates:
-P0500 OBD-II Trouble Code: Basically in my car the signal from the speed sensor was not strong enough to the DME and it read this as a fault with the speed sensor. To at least get rid of the check engine light I connected pin 14 xC101 (VSS) to pin 9 x20 (ABS). This gave the DME a strong enough signal and stopped the check engine light. The amplification is still not large enough for an actual speed reading, this was verified by the referee at the CA BAR station who said at 25mph actual the DME was only reading about 3mph. Note: This seems to be different across the board! Not sure why but more info can be found here: http://www.r3vlimited.com/board/showthread.php?t=285584
-Oil Level Sensor: I had my Full and Low wires backwards. This has since been corrected and is working fine.
I have removed the old chart as it has some incorrect info but it is still available here
I am happy to report I have no check engine light and no check panel lights. I am still short of being legal in CA for smog due to my evap sensor not self testing and going into a "ready" state but all other OBDII equipment is working properly. I'll have to trouble shoot this at another time as I am happy with everything as it stands today.
-----------------------------------------------------------------------
I’m at work today so I will update this post with more info as I have time and confirm that this all actually works.
First of all I need to give some respect to a few fellow r3ver’s who have helped me along with some of the unknowns or steered a newb in the right direction for obd2 conversion
Wanganstyle
328ijunkie
Nando
flyboyx
etxxz
And probably a few others
Hope this isn’t too stupid, but I seriously would not have been able to do this without some direction and to have it start up on the first try made all the hard work worth it.
The info in the sticky threads are like a 24v swap bible so cheers to the guys who were here before me and were cool enough to share. I’m not bringing anything brand new to the table here, but I want to make some contribution so I will share my wiring info and make my spreadsheet available to anyone who asks as well as a few personal lessons learned when I have more time. I am not however responsible for how you use this information and make no claims it is fool proof.
Wiring Adaptor:
One caveat at the present time, I have not finished wiring my obd2 fuel tank pressure sensor, carbon canister or diagnostic plug. Nor is my car moving as I have been slowed by work, vacation and waiting three weeks for a driveshaft that turned out to be rubbish. If all goes well the e30 will be rolling down the streets in less than a week.
So here you go, time to find out from you guys if I made any mistakes! My labels may not be perfect but they worked for me.
I made my own adaptor after deciding to go obd2 as I wanted more control over the wiring, otherwise my harness would have gone to Dave at Markert Motor Werks to get the nice pin treatment.
STUDY THE ETM’S!!! The information is there, if you have a question ask, the guys here know their shit. Wire colors change all the time, even between cars in the same model year. I pulled my adaptor C101 from a ’90 vert and numerous wire colors were different from my ’90 coupe. Identifying the pins and their function correctly is the sure way to keep from setting your car on fire. DO NOT take my wire color notes as a blanket guide, they are specific to my adaptor.
I used some connector covers from the junkyard and 1” shrink wrap from harbor freight. Buy the $5 set with four different sizes each in 48” length, but far the best deal out there. I also used the heat shrink connectors, those worked out pretty sweet. I used a beer coaster as a shield when using the heat gun to keep from toasting other wires. I did screw up and missed one wire but it isn’t going to ruin my day.
The exposed wires are for the obd2 system, oil level sensor and temp gauge which I wired while hooking up the harness to get correct wire lengths. I poked the obd2 wires through the firewall below the fuse box and will have my own custom fuse box below the dash for the three additional fuses and power. I haven’t decided where to place the diagnostic connector yet but probably below the drivers side dash.
More to come another day.
Cheers
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