6.1
INTRODUCTION
This section provides a reference for Diagnostic Trouble Codes (DTC) read from the Multifunction Digital Indicator (MDI).
This section should only be used for machines equipped with a MDI and SEVCON Power Module-(ground board soft-
ware version P1.13 or higher) or ZAPI Power Module-(ground board software version P1.0 or higher). For more informa-
tion on the MDI or any sensors or indicators, refer to the appropriate section for the machine area. Many of the checks
below require configuring and using a multimeter. Refer to Section 7: General Electrical Information & Schematics for
multimeter basics. DTCs are sorted in groups by the first two digits, which is also the system distress lamp flash code.
To troubleshoot multiple DTCs, start with the DTC with the higher first two digits. The machine is powered by four 6 Volt
batteries in series, providing a nominal 24 Volts to the control system. Some procedures below refer to this nominal volt-
age (VMN) as 24V. Actual voltage measurements may differ based on the charge of the batteries. If a correction is
made during a check, conclude the check by cycling the machine power, using the emergency stop switch. It may
also be helpful to run a system test, ANALYZER -> SYSTEM TEST for intermittent or difficult problems.
6.2
DTC INDEX
Error
Error (Displayed on MDI) ..................................................................................................................................................... 6-3
0-0
001 EVERYTHING OK .......................................................................................................................................................... 6-3
002 GROUND MODE OK ..................................................................................................................................................... 6-3
2-1
211 POWER CYCLE ............................................................................................................................................................. 6-4
212 KEYSWITCH FAULTY .................................................................................................................................................... 6-5
2-2
227 STEER SWITCHES FAULTY .......................................................................................................................................... 6-6
2-3
2-5
255 PLATFORM OVERLOADED .......................................................................................................................................... 6-7
3121166
SECTION 6. DIAGNOSTIC TROUBLE CODES
- JLG Lift -
SECTION 6 - DIAGNOSTIC TROUBLE CODES
6-1