Function Prevented; Elev Angle Sensor Faulty - Voltage Out Of Range; Elev Angle Sensor Has Not Been Calibrated; Drive Prevented - Charger Connected - Oshkosh JLG 1930ES Service Maintenance Manual

2-5 Function Prevented

DTC FAULT MESSAGE
251 ELEV ANGLE SENSOR
FAULTY - VOLTAGE OUT
OF RANGE
252 ELEV ANGLE SENSOR
HAS NOT BEEN CALI-
BRATED
253 DRIVE PREVENTED -
CHARGER CONNECTED
254 DRIVE & LIFT UP PRE-
VENTED - CHARGER
CONNECTED
255 PLATFORM OVER-
LOADED
3121656
DESCRIPTION
The elevation angle sensor
input voltage is outside the
acceptable range of 0.10V -
4.50V.
The elevation angle sensor has
not been calibrated.
Driving is not possible while the
vehicle is charging.
Drive or lift is not possible while
the vehicle is charging AND is
configured to prevent all
motion.
The load sensing system mea-
sured platform load is excessive.
SECTION 6 - DIAGNOSTIC TROUBLE CODES
CHECK
• Check that the platform elevation sensor is securely
mounted and undamaged.
• Check voltage as displayed on ANALYZER -> DIAG-
NOSTICS -> ELEV SENSOR -> ANGLE SNSR. Backprobe
ground board J1-15. If this voltage disagrees with the
ANGLE SNSR voltage, replace the ground board.
• Backprobe the elevation angle sensor connector. Ter-
minal A should be 4.7V, terminal C should be 0V.
• Check the elevation angle sensor signal and wiring to
the ground board. The elevation angle sensor input is
from ground board terminal J1-14 (4.7V), its output
(0.1 - 1.2V when stowed) is to ground board terminal
J1-15, and its ground is to ground board terminal J1-
16.
• Replace the ground board.
• Calibrate the elevation angle sensor to clear fault. See
Section 5.5.
• Check if the charger is connected to off board power
source and disconnect if desired.
• Check ANALYZER -> MACHINE SETUP -> CHARGER
INTERLOC is set as desired.
• Check that charger's red (positive) battery wire con-
nector terminal is receiving power (24V) from batter-
ies.
• Check signal from charger interlock connector termi-
nal 2 to ground board terminal J1-29, where 0VDC
indicates charging in process.
• Check if the charger is connected to off board power
source and disconnect if desired.
• Check ANALYZER -> MACHINE SETUP -> CHARGER
INTERLOC is set as desired. (Must be in ACCESS LEVEL
1 to change.)
• Check that charger's red (positive) battery wire con-
nector terminal is receiving power (24V) from batter-
ies.
• Check signal from charger interlock connector termi-
nal 2 to ground board terminal J1-29, where 0VDC
indicates charging in process.
• Remove excess weight from the platform.
• Check that the platform is not caught on something,
preventing up or down movement.
• If any CAN bus faults are active, troubleshoot those
first.
• Refer to Section 2.3: Troubleshooting in the LSS man-
ual, 3124288.
6-9