DANA TM4 SUMO MD MV, Руководство по устранению неисправностей

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105
Service Codes
TT20: IGBT Temperature Sensor reading over the limit
Description
The Troubleshooting Tree 20 indicates an error where
one of the temperature sensors had a reading where
the temperature was higher than the allowed
maximum temperature and causes MCU defective
state.
Listed below are the possible artifacts of these SysFile
IDs in order of likelihood:
1. The loss of the cooling circuit integrity. Refer
to the Sub Troubleshooting Tree STT02
Verify Coolant integrity of the motor and MCU
cooling circuit.
2. There are signs of burnt spots on the MCU
contacts and on the phase cables. Or, the
wrong torque was used on one or more of the
phase lugs, and / or, the wrong phase cable
crimping on one or more of the phase lugs.
3. 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 : There is air in the cooling circuit. The air must be
let out of the cooling circuit.
Note : The flow of the cooling liquid is too low to cool
the motor. Refer to the cooling system troubleshooting
Guide.
Note : The temperature of the liquid temperature is too
high to cool the motor. The system must turn Ignition
off and the coolant mixture must be replaced.
Note : The mixture of the cooling liquid was done badly,
which does not let the coolant cool the motor. Replace
the mixture of cooling liquid. Refer to the cooling
system Service Manual.
Note : The wrong phase cable crimping on one or more
of the phase lugs. Replace the cable.
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
0x310D 0x310E
One of the temperature
sensors of the IGBT went
over the limit and caused
the system to go in a
fault state.
1.
Air in the cooling circuit.
2.
Cooling liquid flow too low or nil (cooling
pump issue).
3.
Cooling liquid temperature too high
4.
Wrong cooling agent mixture used
–
(can create dust/rust in the cooling circuit.
5.
Phase cable are damaged.
6.
Wrong torque applied to one or many
phase lugs.
7.
Wrong phase cable crimping.
8.
Defective MCU.