VZ V8 PCM wiring....

Wiring diagrams and questions
Posts: 10
Joined: Mon Dec 29, 2014 2:52 pm

VZ V8 PCM wiring....

Postby gold73 » Tue Jan 27, 2015 7:08 pm

Hi all, newbie here, have bought a L76 from a 2006 VZ Calais, I am looking for a PCM wiring diagram to build a stand alone loom, I have an engine loom and two E38 ECM's Yes I know that for lotsa bucks i can buy a loom and plug and play but i would like to get to know the E38 a bit better,have searched long and hard including buying the "stand alone loom complete guide" and none contain info on the Aust L76 Gen IV.
Any helpwill be greatly appreciated

User avatar
Posts: 2571
Joined: Sun Mar 01, 2009 8:59 am
Location: North Coast, NSW

Re: VZ V8 wiring....

Postby Jayme » Tue Jan 27, 2015 7:48 pm

I have extracted a few pages from a manual I have... let me know if this helps.

VZ Gen IV Wiring.pdf
(1.29 MiB) Downloaded 794 times

Site Admin
User avatar
Posts: 5525
Joined: Sat Feb 28, 2009 8:34 pm

Re: VZ V8 wiring....

Postby antus » Tue Jan 27, 2015 7:52 pm

And here it is as a list... With thanks to DaMaine1 from http://g8board.com
Attachments
VZ L76 01.jpg
VZ L76 01.jpg (165.69 KiB) Viewed 8161 times
VZ L76 02.jpg
VZ L76 02.jpg (854.41 KiB) Viewed 8161 times
VZ L76 03.jpg
VZ L76 03.jpg (644.5 KiB) Viewed 8161 times
VZ L76 04.jpg
VZ L76 04.jpg (736.31 KiB) Viewed 8161 times
VZ L76 05.jpg
VZ L76 05.jpg (806.11 KiB) Viewed 8161 times
VZ L76 06.jpg
VZ L76 06.jpg (488.6 KiB) Viewed 8161 times
VZ L76 07.jpg
VZ L76 07.jpg (883.99 KiB) Viewed 8161 times
VZ L76 08.jpg
VZ L76 08.jpg (673.3 KiB) Viewed 8161 times
VZ L76 09.jpg
VZ L76 09.jpg (645.72 KiB) Viewed 8161 times
VZ L76 10.jpg
VZ L76 10.jpg (740.39 KiB) Viewed 8161 times
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 10
Joined: Mon Dec 29, 2014 2:52 pm

Re: VZ V8 wiring....

Postby gold73 » Wed Jan 28, 2015 6:11 pm

Thanks Jayme and Antus for the help! there ends a long and painful search for the wiring for the L76, it seems all the diagrams out there are for the US version as the colours are different, also if its advertised as a complete swap guide for LS series....it isnt! Jayme your wiring diagram is the same as my loom.Antus, i think that the diagram you posted is the US version Thanks again guys for the help!

Posts: 10
Joined: Mon Dec 29, 2014 2:52 pm

Re: VZ V8 wiring....

Postby gold73 » Wed Feb 18, 2015 9:47 pm

Hi All, am currently building the stand alone loom for the L76 E38 ECM and thanks to previous posts and help are progressing,I cant seem to find the OBD port on wiring, I assume it is in J1 cable as J2 is for the engine loom. Also it seems that there are diffrent versions of the E38 ECM. I have two E38's, one came with my motor and another i bought for a backup but believe it to be blank, is there a way of confirming the suitability of the ECM from numbers as i dont want to build the loom, plug it in and brick the ECM...
Any help would be great

Site Admin
User avatar
Posts: 5525
Joined: Sat Feb 28, 2009 8:34 pm

Re: VZ V8 wiring....

Postby antus » Sun Mar 01, 2015 5:53 pm

Sorry yeah mine was us based. I thought they were the same. Thanks for pointing that out.

Yes there are at least 3 versions of the e38 computer. Efilive have a compatability guide aimed towards their COS but it should tell you what you need to know.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 54
Joined: Fri May 21, 2010 8:26 pm

Re: VZ V8 wiring....

Postby mattyc » Sun Mar 01, 2015 9:04 pm

What ecu numbers have you got? I have compiled a list to make it easier what ecu matches upto t/b etc

Site Admin
User avatar
Posts: 5525
Joined: Sat Feb 28, 2009 8:34 pm

Re: VZ V8 wiring....

Postby antus » Sun Mar 01, 2015 9:23 pm

There is another thread with some info from VXL67Getrag over here which is probably currently the best reference. OSIDs though rather than service numbers: viewtopic.php?f=7&t=3184
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

Posts: 10
Joined: Mon Dec 29, 2014 2:52 pm

Re: VZ V8 wiring....

Postby gold73 » Mon Mar 02, 2015 9:36 pm

Hi all, The ECU's that i have are numbered...service no. 12597121 with 12612380 in the top line, this came with my motor , also have service no. 12597121 with 12612290 in the top line this was bought second hand as a spare, but is a new unit.the numbers are close but do not match the list... any help?

Posts: 54
Joined: Fri May 21, 2010 8:26 pm

Re: VZ V8 wiring....

Postby mattyc » Tue Mar 03, 2015 11:08 am

being that both ecu's are 12597121 is good they are interchangeable its just a matter of turning vats off for the conversion on the original one with the engine will do. that service number does 2006-2007-2008 and requires the silver blade throttle body, not a brass blade which is the later ones.

Next

Return to Wiring

Who is online

Users browsing this forum: No registered users and 2 guests