Using jumper wire / paper clip turn key to ON don't start hold gas to floor count to 10 ( this resets pedal position sensor ) Throttle motor plug =3 where the ecu says the throttle plate should beĪdjust the screw to get idle with 3 sensors unplugged while running aim for 1800 / 1900 rpm idle Pedal position sensor =2 where you want throttle plate it to be TPS plug =1 ecu told throttle plate position Un plug the 3 sensors ( main is tps yes do this while running) you will have 1800/1900 rpm when this screw is set right (Aristo JZS161) This what I found to set adjustment screw this is to set idle DO NOT MOVE TPS to far or you will have 5000 rpm idle TPS setting is fraction of mm to set book says must use scan tool paper clip works.you have all ready figured that out.to scan you need a advanced OBD2 scanner I have had the same issues with my Aristo 2JZ-GTE ECS-I throttle body after repairing code 89
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