Quote Originally Posted by MIG View Post
That should at least pinpoint if it's a harness issue, or the module itself.
First off, thanks for the advice. And secondly all sensors and connectors are perfect, with each speed sensor reading and 11.8V. I then cleaned all the sensors and connections with nothing changing afterwards.

I have nothing else to troubleshoot myself and I've now decided to had it off to a workshop to get an official diagnosis, then hopefully repair instead of replacement.
I'll update this thread once I hopefully get this issue fixed.