No 5 volt reference to ECT
#5
You have a partial short to ground either through another sensor or a rub through insulation on that circuit. You should never see 9 volts on the 5 volt circuit. You may have a damaged the pcm also. A factory service manual wiring schematic is the way to solve this. Maybe someone over at Saturnfans has seen this, it may be a common problem. There are many sensors that run on 5 volts. Is this the only problem and how did you locate it?
There may be more than one 5 volt driver in your pcm.
There may be more than one 5 volt driver in your pcm.
Last edited by 02 LW300; 02-17-2017 at 10:10 AM.
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