Hi Guys,
Is anyone else still playing with the '93-95 TBI PCMs?
I've had one in my 383 '84 Corvette for over 18 years. It now got a WBo2 input, fan control, 4L60e etc etc.
I see that the code allows for A/C clutch control.
It looks like it's made active by selecting x400F bit 2.
I'd like to use it to enable the A/C to be turned off at high TPS% and RPM. It also allows for an A/C clutch engagement delay of a few seconds when starting the engine which would be nice.
It looks like the code was there but possible never used?
Does anyone know which of the unused pins on the ECM it is coded to control?
I've tried to figure it out by reading the code but my assembly knowledge is not great and I don't know how the pin addressing works in the code either....
I'm going to test a few of the spare pins to see if I can find it. I will start with E3 as I believe it's the (also unused) 'CPI tuning valve' and I *think* when x400F is not selected, it means you with to activate this option instead of the clutch control(?)
Does anyone know?
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