DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

Page: 106 / 192

106
Service Codes
TT22
Description
The Troubleshooting Tree 22 indicates an error where
one of the temperature sensors had a reading where
the temperature was higher than the maximum limit
and causes MCU defective state.
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 be turned 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.
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
0x310F 0x3110
One of the internal
temperature sensors
went over the limit
and caused the
system to go in a
failure 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.
Defective MCU.