DANA SPICER TM4 SUMO HP HV Powertrain, Troubleshooting Manual

Page: 133 / 192

133
Service Codes
TT32
Description
The Troubleshooting Tree 32 indicates an error where
the cables (AC or DC) connecting the Motor and the
MCU were shorted to the chassis, possibly due to a
cable insulation problem.
Other systems on the same DC bus that reports a loss
of insulation that could affect the MCU.
A MCU software upgrade might provide more filtering
concerning the detection of an insulation to chassis
fault.
A damaged phase cable might be causing the error to
be raised.
A sudden loss of insulation for system connected to
the high voltage DC bus may occur.
The DC and phase connectors integrity loss or foreign
material inside the connections might be causing the
short circuits.
The MCU and/or the motor themselves may be
defective.
Note : Phase to chassis detection
The input DC voltage is electrically insulated from the
chassis. A fast transient towards the chassis voltage
level caused by another equipment can potentially trig
the fault. Software upgrade might solve the issue
providing more filtering to the detection.
A fast transient of more than 100 V / 10µs caused by
another equipment can potentially trigger the fault.
Software upgrade might solve the issue providing
more filtering to the detection.
Note : Refer to the Dana TM4 Product installation
guides for more details on installation and deinstallation
procedure including safety warning considerations.
Note : Refer to the TM4 Product Interface drawing for
more details on torque requirement
Note : Phase cables
Ensure that the manufacturer of the cable is one of the
recommended cables:
•
SD-10402-16 Marking EVRP-150 1AWG from
OMG,
•
EXRAD XLE 155/XLE 1 AWG Shielded Cable
from Champlain,
•
150 HVFX-XLE from Champlain.
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.
Related Process
The TT32 call the following process:
•
Appendix 6: Update Software
System Mode Referred by SysFile ID Condition Possible Causes
Operational 0x320E
The system detected
an insulation issue in-
between the AC and
the chassis or
between the DC and
chassis.
1.
Another system on the same DC bus had
a sudden loss of insulation
2.
Outdate software.
3.
Damaged phase cables.
4.
Defective connector causing the short
circuit.
5.
Defective MCU.
6.
Defective motor.