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Thread: ECU loses power with key off

  1. #1
    Senior Member Pearldrummer7's Avatar
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    ECU loses power with key off

    When I turn the key to OFF, the ECU loses its retentive power. Trip odometer resets, CELs reset, so I assume learning resets. I'm sure it's from one of the pins coming from the integrated module or something like it that I deleted. However, I can't seem to find any pin that clearly is that constant 12V power to the ECU in the OEM wiring diagram. Anyone have insight to it? Maybe an ECU pinout?

    I have heard rumors that it's called "self shutoff control"

  2. #2
    Moonlight Performance
    Hindsight's Avatar
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    What year donor?

    Connector B135 on the ECU has a blue wire with a red stripe that should get battery power at all times.

  3. #3
    Senior Member Pearldrummer7's Avatar
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    Crap, should've said the year. It's an 02 donor with a lot of wire dieting.

    B135, blue and red. Got it. I'll have to look at that when I get home.

  4. #4
    Moonlight Performance
    Hindsight's Avatar
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    That wire is for 2007, so am not sure about 2002. I would look at the wiring diagram. There should be one wire that goes to it from the fuse box, but it probably connects to multiple things so it can be a little tricky to find.

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