OK here's a rough pinout from VR, VT and VY Pin 1 Sensing Diag Module/Instruments Serial Data Pin 2 PCM GenIII - OBDII VPW Pin 3 Pin 4 GND Pin 5 GND Pin 6 PCM Diag Enable Pin 7 Pin 8 High Level BCM Serial Data Pin 9 PCM/Low Level BCM Serial Data Pin 10 Pin 11 Pin 12 ABS/TCS Diag Enable Pin 13 Sensin...

Yeah Dylan same here no pic. Helical - i dont think holden was OBDII compliant until VX which had a bare bones system with the VY a bit more compliant. The VZ was the first fully OBDII vehicle as far as i know at present. The info is more of a curiosity thing at the moment. Playing around with a ELM...

I've had a look and there doesn't seem to any info on what pins connect to what from the diag conx. The engine data line Pin9, enable Pin6, GND Pin5 and power Pin16 are all there. The info I'm looking for is the other pins. I have a conx out of a VS with Pins 1, 5, 6, 9, 12, 13, 16 populated. Any id...

LOL

Now that just took all the fun out of it................

Heres some info speciic to the M1.7

Heres some useful programs.....

Useful Dissassembler has explaination documentation in file. This is an Atomated Tunerpro XDF creator... Thanks to Midas on ECUConnections.

Heres some of the better material I've found for Motronics.....

Been a while so heres the story.... After some major upheaval in the home life and now being in my 3rd job in 8 months :D I finally got back to the Motronic..... Have a good amount of the code labeled and have the main algorythms sorted out. ADC code is labelled need live inputs to confirm RAM locat...

Been in a world of my own for a couple of months. Just doing a drive by and Holy Sh#t .....
Now theres a Motronic thread and expansion.
Nice Work...

Ok big day today... With an amazing amount of help from Festy I now have access to the first 8K of ROM. It would appear that the processor is not a 80535 but a masked 80515. This means an onboard ROM image that is a pain in the butt to get access to. Now to go back and lookl at mnemonics again for 2...