Art: SO glad you are on this! More info: this Texas/ California (not much corrosion) non-EGR car has only 155K mi. It's got the battery terminal mounted fuses.
What diagram are you working from?
Bentley, diagram on p. 280-10, as well as 390-64.
"Main relay" on L fender??
The big relay on a bracket, it has two high current red wires and two standard grey ones.
Should be battery on #4, the blue wire. How exactly are you probing this?
Disconnected, DMM probes in the connector.
#2 is the signal and #1 return (grounded). Bentley has known error on this. Search "bentley errata"
So -- with pins on the CPS to ICU cable mislabeled by Bentley, my test said it's NOT shorted??
Re the bottom pics: I will do these tests and post results ASAP. Thanks.
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