TROUBLESHOOTING
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
111
Repair and Service Manual
634756
TROUBLESHOOTING
ELECTRICAL SYSTEM
Basic Electrical Power System Trouble-
shooting
To diagnose electrical problems in the electrical power
system, refer to the ELECTRONIC SPEED CONTROL
Basic Electrical Troubleshooting for Acces-
sories
To diagnose elecrical problems in the vehicle electrical
wiring system, refer to the ELECTRICAL SYSTEM sec-
Condition
Possible Cause
Correction
VEHICLE WILL NOT MOVE
See ELECTRONIC SPEED CONTROL
section.
VEHICLE SPEED ERRATIC
Faulty ESC system
Test and replace components as
indicated by test procedure
NO REDUCED SPEED IN REVERSE
Faulty ESC system
Test and replace components as
indicated by test procedure
MOTOR NOISY
Damaged bearing
Replace bearing
Raised commutator bar(s)
Replace motor
Loose motor mounting hardware
Tighten
BATTERIES WILL NOT CHARGE
Charger not functioning correctly
Repair or replace charger
Vehicle charging wiring faulty
Repair or replace wiring
Vehicle/charger connector damaged
Replace connector
Battery case damaged
Replace battery
Low electrolyte level
Maintain correct electrolyte level
Battery capacity deficient
Hydrometer/load test
Replace battery if required
Damaged battery
Replace battery