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So it turned out that the connector receptacles were bent open just slightly enough to not make contact. I pulled the cover off and then squeezed...
I snuck a couple strands of wire under the connector and found 5V. The connector holes have been rounded open like someone used fluke leads that...
I backprobed D28-64 and 65 and there's no voltage there. I don't have an internal diagram of the ECM to see where that 5V supply comes from. I...
BLUF: New coolant sensor, new ECM, harness resistance and insulation resistance are all good. No voltage at the plug to the coolant sensor on the...