Page 30
MMAE16 - Servce & Parts Manual
Aprl 2022
Secton 11 - Control System
Fault Codes
Fault Codes, when present, appear on the LED Indicator at the Upper
Controls station.
ART_5126
LED Indicator
Upper Controls
Fault
Description
Models
Solutions
01
System Initialization Fault
All Models
Check the ECU.
02
System Communication
Fault
All Models
Check the platform control, wiring on platform
connector, ECU, battery, and relay on ground
control.
03
Invalid Option Setting
All Models
Reset the option code. See Service manual for
instructions.
04
Calibration Fault
All Models
Needs to be Calibrated
08
Key Switch Error
All Models
Check Key switch outputs
10
MC Communication Fault
All Models
Check connections at motor controller
12
Chassis Up or Down Switch
ON at power-up Fault
All Models
Check the wiring on toggle switch, and the toggle
switch.
18
Pothole Guard Fault
All Models
Check the pothole board and switches. If stowed,
check limit switch.
31
Pressure Sensor Fault
Micro19
Check option code. See Service manual for
instructions.
32
Angle Sensor Fault
All Models
Check wiring to angle sensor for normal voltage
range 1.9-3.8V, then check the option code.
35
Pressure Sensor 2 Fault
All Models
Check pressure sensor outputs. Replace Pressure
Sensor.
36
Battery Drain Alarm
All Models
Charge Batteries.
42
Left turn switch ON at power-
up
All Models
Check the left steer button, and the platform
controller.
43
Right Turn Switch ON at
power-up
All Models
Check the right steer button, and the platform
controller.
46
Joystick Enable Switch ON
at power-up
All Models
Wait several seconds when turning on the lift, then
check the joystick dead-man switch.
47
Joystick not in neutral at
power-up
All Models
Check the joystick, and the platform controller.
52
Drive Forward Coil Fault
All Models
Check the option code. See Service manual for
instructions.
