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"As you can see R215 has never been placed on this one."
Agreed. However, it appears neither R212 nor R213 made it into your 949. If the foil is the same on 9xx ECUs, your 949 has no use for the AC signals from pins 14 and 15 because they aren't connected to anything. If I'm right about that, you can end the AC-adjusted 200 rpm increase red herring.
"Can't help but notice that R315 got a little hot on your board."
Again, agreed. If the search function on this board searched everything, you could put "benstein R315" and find my analysis of this from almost 2 decades ago. Short explanation is R315 supplies the shift indicator open collector output to the bulb in the instrument panel behind an up-arrow icon. The same lamp is used for the manual transmission "time to upshift" reminder as with the automatic's OD disable indicator.
There's a violet wire from the ECU pin 26 called VXMAN that is supposed to be left out of the cabin harness connector to the fuel harness in cars equipped with AW70, but it got overlooked at the factory. The post is worth finding when others questioned the overheated resistor visually inspecting their computers, and in the occasional transmission-type swaps. With the violet wire jumper option incorrect the 1-watt resistor dissipates over ten times that amount when the auto transmission's solenoid is engaged to allow 4th gear.
I'm guessing quite a few ECUs used with automatics have a cooked R315, based on the few I've seen, and just how cooked depends on high-rpm driving habits.
If you agree the AC idle-up is not the issue in your car, you might have a look at pin 30. When I first traced this out I imagined it was used to adjust the fuel during cranking.
I'd dismissed the description "park/neutral" until realizing the connection it shares with the under-hood starter test socket is on the ignition switch side of the automatic's neutral safety switch, which in your car is a jumper wire. This came up while helping someone diagnose the voltage being read at the test socket.
This function is still hazy in my understanding, as to what the hybrid does with the information, but it was clear the voltage normally being pulled low by the starter solenoid windings depends on the sometimes flaky and dirty connection at the starter terminal 50. And, its appearance at the ECU depends on the weather-exposed double crimp in the test socket. The R133 pullup in the ECU isn't enough to light many test lamps, but will easily fool a DMM used by someone unaware of its existence troubleshooting intermittent cranking.
--
Art Benstein near Baltimore
No trees were harmed in the posting of this message...however an extraordinarily large number of electrons were horribly inconvenienced.
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