Repair Instruction

Repair Actions

1. Check for communication faults with MHU from other ECU's and investigate faults with MHU.
2. If fault returns, check for communication faults from the FPD Communication BUS linking MDU and MHU and investigate faults with FPD Communication BUS
3. If fault returns, check electrical circuits between MDU and MHU, repair if faulty and clear DTC
4. If fault returns, replace MDU and clear DTC
5. If fault returns, replace MHU and clear DTC