ST205 conversion issue, converting my mr2 rev1 to st205 ecu Options

[Danohosko]

Hi guys, so im converting my Mr2 turbo rev1 to use an ST205 Ecu.
I made a patch cable so i could swap back if needed.
Started up first time then wouldnt idle, did this a couple times.
Got fault code 21, expected as im using the old 1 wire lambda.

Then i revved a bit more, while still, and got a string of fault codes, 21, 22 24, maybe 26, and another which i missed as i got distracted not 54 as ive already done the resistor mod for the charge cooler stuff.

Pretty certain my patch cable is correct.
Then i decide start the car again, turn key and de-immobilise (toad alarm) and the three engine lights etc dont come on, and it doesnt even do anything when i turn the key? Weird as i didnt change anything.

Swapped back to old ecu and started fine.

So i thinking that my lambda needs to be swapped for 21 and would that of caused it to run rich and give 26? And wrong lambda might if caused the no idle?
But the water temp is in same place as on the Mr2 so that should of been fine? (Coolant temp?) So not sure why 22.

And my IAT, 24, the one i have looks exact same as the engine bay temp sensor with same connection? Is that correct?

Thanks all,
Dan
(ps. I used to have a celica, should of kept it)

[delusionz]

code 54 is the most commonly documented st205 thing around, because 99% of st205 check engine light situations are from the water level sensor. bridging a circuit open/circuit close sensor isnt exactly rocket science so your point is moot