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Fun with pulse-width modulation, and bare wires · 2:16am Feb 7th, 2018

What follows is the diagnostic procedure on three different vehicles, with three different results.

We're going to start with a Cadillac.

Y'all may remember from my network blog that various computers on the car are networked together, and how if there are communication problems, you can have issues that you might not expect?

I can't say for certain exactly what symptoms this car presented with.

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