Q: Swaped used ecm for original, sienna will not start, do I need to take it to the dealer to reprogram?
2004 Sienna. Rat chewed wire from sensor plug #1. Following steps from a mechanic I fixed the wires, traced the wire to the ecm and the ecm was not sending signal to the sensor. Had a missfire cylinder code on #1. Bought a used ecm, identical, same part number. Swaped ecm with battery unhooked, hooked battery turn the key for 5min. Tryed it and will not start, it will crank and try to start but it dies. Do I need to take it to the dealer to reprogram or is there something else I could try? Thank you
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