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Another electrical gremlin!

posted by  B.B. on  Fri Mar 17 21:56 CST 2023
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last visit: Mon Oct 6 13:15 CST 2014
[RELATED]

Hi Dave,

I finally got the wiring Greenbook for the 93 940 !
Let me know what pages you want and I'll send.

You're right that Both ECUs use only the Intake manifold grounds (2).

The right headlight shares a ground with the RSR coil.
Dunno if the the ground can fail to make enough voltage drop to the RSR
coil and let it fall out.
Maybe that ground is resistive?
That's behind the test with pulling the fuses. Diagnosing the fault.

As you said in the beginning it's a weird problem.

Bill






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