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Old 10-18-2013, 03:52 PM   #250 (permalink)
orange4boy
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Quote:
Hm... My transmission solenoids (42RLE) also require PWM to operate. I wonder if I can convince an Arduino Uno to become a TCM.

Solenoids don't require PWM to operate. They require the PWM signal to modulate pressure. PWM is simply a way to make the solenoid see lower voltage without using a resitor. This is not needed of you don't want the clutch to slip, which you don't. If the clutch is not slippping, it will last much longer, if not beyond the life of your car. It is not small. The TCC is quite large for what it does.

The simplest way to do this is to bypass the TCU signal to the solenoid with full voltage or ground, depending on your particular system. To stop codes, you can put a resistor in line with the original TCU wires to make it "see" a solenoid. The resistor is a false load.

Much easier than programming an arduino to be a TCU!
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