Definitive EFI ECU Pinout (KS Mod-friendly)

[foxdie]

Hi all!

The following is the current known pinout for the EFI (engine) ECU. It encompasses research from other dedicated members and myself through service manuals and wiring diagrams. A big thank you to all who contributed (and who contribute in future)

Because different people reference each pin in different ways, this diagram refers to pins in both the wiring diagram format (absolute pins ie. 52) and by connector (C2).

In addition to that, I've also added the following;

1. A basic description of each pin to help diagnosis of faults
2. Where possible, additional uses for some pins, these are described at the bottom of the diagram

Last update: 5th January 2018 - revision 6

VR4 Engine ECU Pinout v6.jpg

Access the most up to date info here on Google Sheets
Download the latest version here to print straight to A4

If anyone feels there's missing information or sees an error, please don't hesitate to let me know and I'll update the diagram