Fault codes - local shop can't solve

[SD1too]

Originally Posted by EVS

... they reprogrammed the stepper motor of the throttle body ...

Originally Posted by hogweed

This is very vague, and not terribly helpful, but the stepper motor is always going out of spec on my TF ...

I have checked RAVE and the stepper motor is adjusted automatically by the ECM. There is no mention of this being done manually via T4. Erik's JLR dealer may have meant to tell him that it was the throttle position sensor whose closed position can be learnt by the ECM by depressing the throttle fully five times within ten seconds then switching off the ignition and waiting for twenty seconds. You might like to try this with your TF Roger.

Note that this applies only to the 1.8 engine (MEMS engine management). It is not specified for the KV6.

Simon

[Yorkshire GOC]

Big Russ reset my stepper motor using T4 - I watched him do it.

[BigRuss]

Originally Posted by Yorkshire GOC

Big Russ reset my stepper motor using T4 - I watched him do it.

Thanks, yes it's only adjustable using T4 it's not automatically set by the ECM.
I always have a look when I've got a 1.8 in for anything as they're almost always out of adjustment.
You can even tell if the valves haven't been re-ground properly after a head gasket replacement

It's part of the service interval checks check for updated tune and read fault codes and reset adaptions

Russ