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trouble connecting to my ECM

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Old 09-19-2011, 12:20 PM   #1
roman dog [OP] roman dog is offline
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trouble connecting to my ECM

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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