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trouble connecting to my ECM

Discussion in 'Performance and Tuning' started by roman dog, Sep 19, 2011.

  1. Sep 19, 2011 at 12:20 PM
    roman dog

    roman dog [OP] New Member

    Sep 19, 2011
    First Name:
    '99 Tacoma 4x4
    intake, exhaust, bilsteins all around, cheap lights
    Hey all, I'm looking for some help with this problem. I'm trying to tune the fuel map of my 1999 3.4 L Tacoma. My scan tool will interface with the OBD II with no problem, but if I try to connect with the ECM, I get an error message telling me to check the connection and make sure that the ECM has power. I purchased the URD MAF calibrator and I can't upload or receive any map data. Has anybody installed one of these before or know something about this problem?

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