To answer your question, ALLDATAdiy does supply wiring schematics and pinouts for the ECM.
Their wording can be misinterputed, It says
wiring schematics and
ecm pinouts. I had a professional membership at alldata and apart from the internals of an alternator, I've never seen schematics for the guts of any module. The odd time they may show a Mosfet, relay or pull up/down resistor output but nothing as to what's driving these outputs. Automotive schematics are designed for mechanics and not electronic peoples. Most modules internals are propriety, secret squirrel, black boxes
Guess I am confused. The first link in the for the spike clamping says it is a 600watt diode that is way more than the original of 1/2 a watt and the second came back as "Part not found".
patm58 aka confused
You need to read the entire datasheet. It is
not a diode, it is a TVS or specialized zener diode. The 600 Watts is peak power @ 1 millisecond. Since a TVS works quickly and does nothing until required, as when a spike comes along, a continuous spec. parameter would be meaningless. Second link worked for me.
Also, as stated, I was just using those links as examples as to what is sometimes employed. I never said that they were replacements for what you have as we have yet to determine where your "zener" is located within the circuit and what it is doing.
You need to find a good magnifier and determine the numbers on your dud part and as I susgested previously, try to determine where the part is in the circuitry by following the foil traces. If it doesn't go directly to a pinout then it is most likey a regular zener of which you need to determine its valve and hope that nothing else in the circuit was destroyed along with it.
cheers