DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

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94
Service Codes
TT19
Description
The Troubleshooting Tree 19 indicates an error where
the High-Power DC voltage drops lower than the limit
(300V), which the caused system to go in a defective
state.
Note : Refer to the MCU installation guide
for more details on installation and
deinstallation procedure including safety
warning considerations
Note : List of potential external causes:
•
Another defective system on the DC
bus causing electrical overloads,
•
Defective Battery Management
System or Battery Interface Module,
•
Defective battery contactor causing
intermittent contact,
•
Defective controller VMU/ECU,
•
Higher than normal High Voltage
battery level,
•
Defective Power Distribution Unit or
connection between MCU and Power
Distribution Unit,
•
Defective battery charger.
Refer to the related Service Manual of these
listed systems.
Note : Refer to the Battery Pack Troubleshooting Guide to
get the pinout of the related Battery Pack connector to
perform the correct continuity check.
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
Operational
0x310A
The high-power DC
voltage dropped
under the limit and
caused the system to
go in a fault state.
1.
DC high power contactor issue.
2.
DC high power battery source issue.
3.
DC high power battery chain connection
issue (contactor, PDU, pre-charge circuit
and MCU, BMS).
4.
Improper grounding (MCU and / or
motor).
5.
DC system load activation/deactivation.
6.
Defective controller.
7.
Defective MCU.