Hello,
We first should look at the fuses that run the system which are ECU ACC, ECU IG, Gauge 2, ECU B, and Door 2. Here is a guide to help walk us through the test and the fuse locations ans well as the door lock wiring diagrams so you can see how it works:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Cheers, Ken
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Monday, April 12th, 2021 AT 5:00 PM