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  1. 8

    1JZX90 ecu HT pinout

    This is a swap to a mark II supra if this helps.
  2. 8

    1JZX90 ecu HT pinout

    Trying to replace one wire oxygen sensor to 3 wire one to fix code 21. HT pinout on ecu should it read 12 volt or is it a ground siginal,because I getting no voltage reading.Thanks.
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