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Toyota Tundra No Start with No ECM Communication

Discussion in 'Tech Help' started by Lewis, Aug 9, 2017.

  1. Lewis

    Lewis Moderator Staff Member

    If you run across a 2008 Toyota Tundra (3UR-FE) and have a no start, no ECM communication condition and there is no "Check Engine Light" bulb illuminated during the function check, disconnect the secondary air valves.These have a tendency to short the 5 volt reference line and stop all ECM communication.
     

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