SECTION 10—SAFETY INSPECTION/TROUBLESHOOTING
Part No 1125031
29
Troubleshooting
NOTE: Refer to the wheelchair service manuals listed in Reference Documents on page 8 for
complete mechanical and electrical troubleshooting guides for the base and an explanation of error
codes.
MK5 Electronics
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Wheelchair Power ON
but does not drive.
System tilted beyond
drive lock-out angle
(20°).
Check motor locks.
Speed set too low.
Battery charger
connected.
Return to neutral position (upright). Refer to Operating
the Powered Tilt System on page 103.
If this does not work, adjust the sensors. Refer to
Adjusting/Replacing the Drive Lockout Sensor on
page 134 or Adjusting/Replacing the Tilt Sensor on
page 139.
Engage motor locks to drive wheelchair.
Adjust speed setting.
Disconnect battery charger.
Seating system not
functioning or working
intermittently.
Low batteries.
Faulty electrical
connection.
Blown fuse.
Seat has been driven
under a heavy load for an
extended period of time.
Charge batteries.
Check all connections.
Replace the wiring harness. Refer to the wheelchair
owner’s or service manual.
Allow time for the electronics to cool down (Light Duty
Use).
Error Code:
E28 - MPJ joystick
or
5 flashes - DPJ and SPJ-80
joysticks.
System tilted beyond
drive lock-out angle
(20°).
Return to neutral position (upright). Refer to Operating
the Powered Tilt System on page 103.
If this does not work, adjust the sensors. Refer to
Adjusting/Replacing the Drive Lockout Sensor on
page 134 or Adjusting/Replacing the Tilt Sensor on
page 139.
Programmer does not
work or gives
“communication error.”
System tilted beyond
drive lock-out angle
(20°).
Return to neutral position (upright). Refer to Operating
the Powered Tilt System on page 103.
If this does not work, adjust the sensors. Refer to
Adjusting/Replacing the Drive Lockout Sensor on
page 134 or Adjusting/Replacing the Tilt Sensor on
page 139.
