Troubleshooting
MERGE 10-2
Chapter 10
Part 1 of Troubleshooting Instructions, continue
Symptom Possible causes Correction action
Circuit – incorrect wiring
Check the wiring of the electric vehicle. Refer to
the wiring diagram on page 9-7.
The electric vehicle
can be started, but the
motor braking device
does not operate.
Speed sensor disconnection or
failure
Refer to “Check Procedure 9—Motor speed
sensor”.
Forward/reverse gear
switch—incorrectly connected or
damaged.
Refer to, “Check Procedure
10—forward/reverse gear switch”.
Motor – incorrect wiring.
Check the wiring of the motor. Refer to the
wiring diagram on page 9-7.
Electric vehicle can
only run forward or
backward.
Controller—incorrect wiring or
controller piece failure.
Check the wiring of the electric vehicle. Refer to
the wiring diagram on page 9-7.
Battery charger connection—wire
poor contact of the receptacle or
battery.
Check the wire for connection and fasten it
when necessary.
The electric vehicle
can be started, but the
battery charger can't
charge the battery.
Battery charger
Refer to relevant maintenance and repair
instructions for battery charger.
DC converter failure Replace DC converter
Lighting fuse blowing out Replace fuse
Auxiliary contactor failure Replace contactor
Bulb damaged Replace bulb
Headlight failure
Combination switch failure Replace combination switch
DC converter failure Replace DC converter
Turn signal lamp bulb Replace bulb
Flasher failure Replace flasher
Turn signal lamp
failure
Combination switch failure Replace combination switch
DC converter failure Replace DC converter
Lighting fuse blowing out Replace fuse
Auxiliary contactor failure Replacement contactor
Tail light damaged Replace tail light
Flasher failure Replace flasher
Tail light failure
Combination switch failure Replace combination switch
DC converter failure Replace DC converter
Flasher failure Replace flasher
Brake switch failure Replace brake switch
High mount stop lamp
failure
High mount stop lamp bulb damaged Replace high mount stop lamp bulb
Odometer parking lamp bulb failure Replace odometer parking lamp bulb
Parking switch failure Replace switch
Parking lamp failure
Bulb damaged Replace bulb
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