Wheel System, Traction 195Service Manual – SC6500
™
Troubleshooting Chart
Flash
Code
#
Programmer LCD
Display/ Effect Of Fault
Possible Cause(s) Set/Clear Conditions
39 Main Contactor Did Not
Close
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
1. Main contactor did not close.
2. Main contactor tips are
oxidized, burned, or not
making good contact.
3. External load on capacitor
bank (B+ connection terminal)
that prevents capacitor bank
from charging.
4. Blown B+ fuse.
Set: With the main contactor
commanded closed, the
capacitor bank voltage (B+
connection terminal) did not
charge to B+.
Clear: Cycle KSI.
41 Throttle Wiper High
ShutdownThrottle.
1. See Monitor menu » Inputs:
Throttle Pot.
2. Throttle Pot. wiper voltage too
high.
Set: Throttle pot wiper (pin 16)
voltage is higher than the high
fault threshold (can be changed
with the VCL function Setup_
Pot_Faults).
Clear: Bring throttle pot
wiper voltage below the fault
threshold.
42 Throttle Wiper Low
ShutdownThrottle.
1. See Monitor menu » Inputs:
Throttle Pot.
2. Throttle pot wiper voltage too
low.
Set: Throttle pot wiper (pin 16)
voltage is lower than the low
fault threshold (can be changed
with the VCL function Setup_
Pot_Faults).
Clear: Bring throttle pot
wiper voltage above the fault
threshold.
43 Pot2 Wiper High
FullBrake.
1. See Monitor menu » Inputs:
Pot2 Raw.
2. Pot2 wiper voltage too high.
Set: Pot2 wiper (pin 17) voltage
is higher than the high fault
threshold (can be changed with
the VCL function Setup_Pot_
Faults()).
Clear: Bring Pot2 wiper voltage
below the fault threshold.
44 Pot2 Wiper Low
FullBrake.
1. 1. See Monitor menu » Inputs:
Pot2 Raw.
2. 2. Pot2 wiper voltage too low.
Set: Pot2 wiper (pin 17) voltage
is lower than the low fault
threshold (can be changed with
the VCL function Setup_Pot_
Faults()).
Clear: Bring Pot2 wiper voltage
above the fault threshold.
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