DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

Page: 119 / 192

119
Service Codes
Troubleshooting Tree 28
Refer to the Application Note
High-speed fault management document.
Ignore any « phase
current reached the
maximum » errors.
Was
the « Warning – Back
EMF Motor
reduction mechanism activated (phases are
short-circuited) » raised under the same
« Info - System power up » as any listed
« phase current
reached the maximum »
error(s)?
Was
the « Warning - VAUX too low »
raised under the same « Info - System
power up » as any listed
« phase current
reached the maximum »
error(s)?
Refer to the Troubleshooting Tree
related to SysFile ID 0x0313 to
continue troubleshooting.
Yes
Inspect the VMU/
ECU interface
connector.
Is
there any
evidence of an integrity
loss on the MCU
connector ?
Disconnect the VMU
interface connector
of the MCU.
Was
the « Warning -Motor Control
Inverter 0x00 to 08 » raised under the
same « Info – System power-up » as any
listed « phase current
reached the maximum »
error(s)?
No
Was the 0x050B and/or
0x050C error
raised under the same « Info – System
power-up » as « Warning - Back EMF Motor
reduction mechanism activated
(phases are short circuited) » ?
The MCU must have
been commanded
to shut down
(ShutdownReq via
CAN command) by
the VMU / ECU
while the vehicle
was beyond the
"unsafe speed".
Investigate the
problem at the
VMU/ECU level.
Refer to the Verify
Connector Integrity
subtree (STT01).
No
No
Switch OFF the auxiliary
batteries switch.
Complete
A
Yes
Yes
Yes
No
Complete
Yes
B
No