DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

Page: 56 / 192

56
Service Codes
TT06
Description
The Troubleshooting Tree 06 indicates that the DC
battery current is beyond acceptable limit as the MCU
is not in operation mode (Standby or failure).
This error is likely the result of the MCU another error
while the vehicle was in high speed.
The check of the Specific SysFile ID occurring at the
same time of another specific SysFile ID leads to
determine if the MCU is defective.
Note : Refer to the TM4 Product installation guide for
more details on installation and deinstallation
procedure including safety warning considerations.
Note : Refer to the Application Note High-speed fault
management document.
Note : Any SysFile ID error raised by the system while
the vehicle is beyond the "unsafe speed" will activate
the phase short circuit mechanism through the MCU
power switch modules. This mechanism is activated
to maintain the DC bus under the high voltage
maximum limit. At the time the motor phases are short
circuited through the MCU power modules, the
battery current will temporarily exceed the threshold
limit upon failure and raise this SysFile ID error. This
error can therefore be ignored following the 0x3113
warning (TT27) "Back EMF Motor reduction
mechanism activated (phases are short-circuited)".
Other error(s) must be investigated.
To correctly diagnose the faulty system, connect the
Diagnostic Tool (see «Diagnostics» section for test
equipment
and descriptions) and follow the
Troubleshooting Tree procedure below.
See “Safety Warnings” and “Troubleshooting Tips”
sections for general guidelines on system diagnostics.
System Mode Referred by
SysFile ID Condition Possible Causes
Standby or failure
state
0x0319
DC battery current
beyond acceptable limit
as the MCU is not in
operation mode (Standby
or failure).
1.
0x3113 warning occurred at the same
time caused by another error while the
vehicle was in high speed (Back EMF
mechanism - phase short circuit protection
engaged).
2.
0x050B and/or 0x050C error occurred
due to a VMU / ECU controller that sent a
shutdown request CAN message while the
motor speed was high (phase short circuit
mechanism engaged).
3.
Defective MCU.