DANA TM4 SUMO MD MV, Руководство по устранению неисправностей

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111
Service Codes
TT23: Motor Coil Temperature Sensor measurement over limit
Description
The Troubleshooting Tree 23 indicates an error where
one of the temperature sensors of the motor coil had
a reading where the temperature was greater than the
maximum limit and causes MCU defective state.
Listed below are the possible artifacts of this SysFile
ID, in order of likelihood:
1. The SysFile IDs occur in the same time as
0x320F, refer to the TT05.
2. The loss of the cooling circuit integrity. Refer
to the Sub Troubleshooting Tree STT02
Verify Coolant integrity of the motor and MCU
cooling circuit.
3. The motor is hot. The short circuit protection
was turned on for more than 2 minutes. Wait
the motor cooling down.
4. When the motor is cooled down, turn Ignition
on. Connect TM4 ODIN to check if this
SysFile ID occurs 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 motor 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 : 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. Refer to
the cooling system Service Manual.
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.
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
0x320F
One of the temperature
sensors of the motor coil
went over the limit and
caused the system to go
in a failure state.
1.
Another SysFile occurred (TT05)
2.
Air in the cooling circuit.
3.
Cooling liquid flow too low or nil (cooling
pump issue).
4.
Cooling liquid temperature too high
5.
Wrong cooling agent mixture used
– (can
create dust/rust in the cooling circuit).
6.
Active short circuit mechanism activated
(for more than 2 minutes without speed
reduction under safe back EMF voltage).
7.
Defective motor.