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Thread: 2016 4.3L LV3 V6 lost 5V ref on most outputs

  1. #1
    Potential Tuner
    Join Date
    Jun 2019
    Posts
    9

    2016 4.3L LV3 V6 lost 5V ref on most outputs

    2016 LV3 4.3 V6 lost 5v output. Is there a module CAN input that needs to wake up that part of the ECM? We are using just the engine for a customers project.

    Any help would be greatly appreciated.
    Thanks in advance

  2. #2
    Potential Tuner
    Join Date
    Jun 2019
    Posts
    9
    FYI I found the problem. This project we are using the Engine only into a crawler, We jumped a wire from X1 21 to X1 70 (wake up) and that turned on the 5V output. Then we has to add supply voltage to pin X1 44 (CEL) output, this enabled the crank sensor to work and the ECM to receive RPMs.