DANA TM4 SUMO MD MV, Руководство по устранению неисправностей

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95
Service Codes
TT18: High power battery voltage < lower voltage limit
Description
The Troubleshooting Tree 18 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.
Listed below are the possible causes of the SysFile
ID, in order of likelihood:
1. Something is wrong with the main contactors
of the lines from the DC high power battery.
2. There is an issue with the DC high power
battery source. The user must consult the
manual related to the DC high voltage battery.
3. DC high power battery chain connection
issue (contactor, PDU, pre-charge circuit and
MCU, BMS). Check the continuity along the
cables from MCU to High Voltage Battery
pack. If there is continuity fault, replace the
wirings.
4. There is an issue with the grounding. In this
case, the system must be turned OFF and the
grounding connections must be checked. If
they are defective, replace the grounding
wirings.
5. There are additional loads on board the
vehicle that might trig the SysFile ID. Refer to
the potential external causes list in the Note.
6. Connect TM4 ODIN to check if these SysFile
IDs occur again. If this is the case, the MCU
is defective. Turn Ignition OFF and all high
voltage electrical sources before replacing
MCU.
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
Defective
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.