DANA TM4 SUMO MD MV, Troubleshooting Manual

Page: 99 / 182

99
Service Codes
TT19: High Power Battery Voltage > Maximum
Description
The troubleshooting tree 19 indicates an error where
the high power DC battery voltage reaches over
voltage limit and causes MCU defective state.
Listed below are the possible artifacts of these SysFile
IDs in order of likelihood:
1.
The text “BlackBox info available” is not
displayed in the status bar at the bottom of the
window in TM4 ODIN tool.
2. There were significant voltage drops within
the BlackBox view meaning there were
numerous
repeated connections and
reconnections.
3. The motor resolver angle waveform shows
ripples. See the note and the pictures on the
next page.
4. There is continuity fault between the MCU
grounding port and the ground.
5. There is continuity fault between the shield
portion DC cables connected to the DC cable
glands assemblies (positive and negative
cables).
6. Another external root causes.
7. Connect TM4 ODIN to check these SysFile
IDs occur again. If this is the case, the MCU
is defective.
Note : The DC high battery power lines have a
contactors issue. Turn Ignition off before investigation
of the contactors. For the investigation refer to the
relevant contactor documentation.
Note : The DC high voltage supply is intermittent. Turn
Ignition off before the investigation of the DC battery
chain from the contactor to the MCU.
Note : There are resonance within the DC lines or the
regeneration torque causes increase in voltage
because of battery resistance or the motor resolver is
making a voltage ripple.
Note : Regarding contact intermittence to MCU, if the
contactor contacts or any other contacts in the battery
chain from contactor to MCU are intermittent while the
MCU is in operational state, it could make the DC bus
to fluctuate due to resonances on the DC line beyond
the high voltage detection point.
Note : Refer to the MCU installation guide for more
details on installation and deinstallation procedure
including safety warning considerations.
Note : Refer to the TM4 Product installation guides for
more details on grounding (MCU and motor).
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
Defective
0x310B 0x310C
High power DC
voltage was higher
than the limit.
1.
“BlackBox info available” is not displayed in
the status bar at the bottom of the window in
TM4 ODIN tool
2. Significant voltage drops meaning numerous
repeated connections and reconnections.
3. Affected motor resolver signal (motor angle
waveform) that creates DC high voltage
ripple.
4. Continuity fault between the MCU grounding
port and the ground.
5. Another external root causes.
6. Defective MCU.