Specifications

All other models =
Approx. 54 ohms
4. Check coil open or
shorted.
Replace coil.
Logic
The controller checks to ensure the main contactor circuit is completed on startup. If
the controller senses this circuit has not been completed, the controller will fault.
LED
Code
Dash
Display
Model Programmer Display
4,2
Code
42
All
Overvoltage
Condition
Controller is sensing
voltage above present
value.
Truck Response
Reduced Traction
Performance
Possible Causes and
Test Procedures
1. Operating with
charger attached.
2. Incorrect battery
installed in truck.
3. Check condition of
battery and battery
cables.
NOTE: When truck is
subjected to high
regenerative braking
currents, the fault may
appear as an
intermittent fault and
can be cleared by
resetting the key.
Circuit Description
Logic
The controller monitors input voltage. When input voltage is above the controller
preset, current to the traction motor is reduced.
LED
Code
Dash
Display
Model Programmer Display
4,2
Code
42
All
Low Battery Voltage
Condition
Controller is sensing
battery voltage below a
preset level.
Truck Response
Reduced Traction
Performance
Possible Causes and
Test Procedures
1. Battery needs
charging.
2. Check battery cables
for loose or corroded
terminals.
3. Incorrect battery
installed.
Circuit Description
Logic
The controller monitors input voltage. When input voltage is below the controller
preset, current to the traction motor is reduced.
LED
Code
Dash
Display
Model Programmer Display
4,3
Code
43
All
Over Temp Cutback
Condition
Controller heat sink is
too hot.
Truck Response
Reduced Traction
Performance
Possible Causes and
Circuit Description
524164719-2200YRM0928-(07-2010)-US-EN
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