MS MX Large DU inverter repair manual – DI_F072 DI_W072 #20236118123
Repair manual price: 800€ + Tax BUY REPAIR MANUAL This operation manual is a proprietary business secret that outlines the successful refurbishment process for Drive inverter system. By following the provided instruction steps, which include text, images, and videos, you will be fully equipped to repair the LDU inverter effectively and efficiently
Common causes:
Repeated full throtle dragrace
Drive inverter overheat
Stator bad shape and overheat
Coolant ingress
Normal tear&wear for P85 P85D P90D P100D
Errors:
DI_w072_gateDriverFaultCounter
DI_f072_gateDriverFaultCounter
DI_w024_SelfTest (failed)
DI_f024_SelfTest (failed)
DI_f017_hwPedalMonitor
Part numbers:
1007972-00-B,
1056680-00-Q,
1002633-00-T,
1002633-01-P,
1002633-01-T,
1025276-00-Q,
1025598-00-P,
1025598-00-T,
1025276-00-Q,
1003385-02-K,
1039354-00-Q,
Tools needed (prepare it) :
Soldering station
Paint remover spray
Twizzers
Xprog programmer or VVDI Prog
Adapter
EV Clinic Online file service to reprogram error
Repair operation steps
1- We expect that your Drive Unit is removed from car and ready for bench troubleshooting. First step is to remove HV cable from Drive Inverter. Remove orange cap and remove 13mm screws hold HV cable.
2- Using a digital multi-meter (DMM), perform the following diode voltage drop test with the high voltage cables removed:
Place DMM in "Diode-Mode"
Place the positive lead of the DMM on the
HV negative input on the DU.
Place the negative lead of the DMM on the
HV positive input on the DU.
-If the voltage reading is less than the specifications, 0.45 - 0.7 DC then diagnose and replace the drive unit phase board.
This picture below shows example of good protection diode reading
And this picture below shows example of bad diode reading
