2021 MX13 pac car dpf and scr efficiency issues in need of egr tuneup

[mikkhh]

there are no fault codes in ecm, have all comms etc, but now but no crank.

There had been lots of diagnosis done and cabin stuff unplugged etc etc beforehand .
There was also starter overheat message on cluster. No idea if it will crank with ecm no comms, most likely truck died and somebody cranked the hell out of it, batteries were completely dead when somebody first started diagnosing truck...

Most likely connector pins are bent oversize from tester leads etc from "diagnosis expertise", or maybe just some connecter not plugged in.


Well the truck started when power directly to starter solenoid. It is in max derate 20kmh, maybe that is why no crank. Not sure if MX13 has countdown hours for no start or not

[mikkhh]

Starter error cleared itself after waiting some time and truck starts good now. The truck arrived back on a trailer.

Still need to clear derate. On those MX13 must do scr output test, but this thing does not want to start, will take a small drive to warm up the engine and try then. If still cries then it means the ACM has to be reflashed. Luckily I have readout from few months ago from this acm when it was completely working, otherwise it would mean a trip to dealership.