ELECTRICAL SYSTEM AND TESTING: ELECTRIC VEHICLE
Troubleshooting
2007-2008 XRT 800, 810 and 850 Maintenance and Service Manual
Page 21-7
21
Diagnostic Menu – FIELD MISSING
fault code
Loose or disconnected motor field coil
wires at motor or speed controller or
broken wire
Repair and/or connect the field coil wires
Failure of the motor field windings
Section 26 – Motor (Model
5BC59JBS6390) or Section 27 – Motor
(Model EJ4-4001)
Failure of the FET’s that control field
current
Replace the speed controller.
See Speed
Controller Removal, Section 23,
Page 23-13.
Diagnostic Menu – HPD (high pedal
detect) fault code
Operator error
Train operators to fully remove foot from
accelerator pedal before turning key
switch to the ON position or changing the
selected direction with the Forward/
Reverse switch
Diagnostic Menu – LOW BATTERY fault
code
Batteries require charging
Place batteries on battery charger and
allow them to fully charge
Improperly maintained or failed batteries
Section 24 – Batteries: Electric Vehicles
Diagnostic Menu – OPEN ARMATURE
fault code
Loose or disconnected motor armature
wires at motor or speed controller or
broken wire
Repair and/or connect the motor armature
wires
Failure of the motor armature or brushes
Section 26 – Motor (Model
5BC59JBS6390) or Section 27 – Motor
(Model EJ4-4001)
Failure of the FET’s that control armature
current
Replace the speed controller.
See Speed
Controller Removal, Section 23,
Page 23-13.
Troubleshooting Guide continued on next page...
TROUBLESHOOTING GUIDE 1
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
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