Hella variable vane turbo controller.

[steve-V8s]

Anybody have any info about how to drive these. Specifically interested in the G-222 which I think is used on the ford 1.8 Tdci engine. The unit has a 5 pin connector and rumour has it that pin1 = 12v, pin 2 = 0v, pin 4=pwm drive. Have no info on what the other pins do but would suspect some sort of position sensor signal.

The Internet suggests that the position can be set by applying a 300hz pwm signal to pin 4, varying it between 0 and 100% pwm sets the position. If that is the case is that pwm as you would drive a motor, ie 12v is supplied to the unit and the pwm pin is then switched to 0v or does it need positive going pwm drive. Also what current does it require ?

Any info on the G-xxx controllers would be very helpful.

[GreenV8S]

You could get an upper bound on the current by measuring the resistance between the PWM input and whichever rail it connects to.

If your research doesn't find the answer, it should be easy enough to throw a 12V pwm signal at it and see how it responds.