JLG 3246ES Service Manual - Manual (Page 157)

SECTION 6 - DIAGNOSTIC TROUBLE CODES
3121166 – JLG Lift – 6-5
005 DRIVE & LIFT UP PRE-
VENTED - TILTED & ELE-
VATED Driving is not possible since the
platform is elevated and the
chassis is not level. • Check that the machine is tilted. If so, lower the plat-
form and reposition the machine to a level surface.
• Fully stow the platform.
• The tilt sensor is part of the ground control box. Check
that the ground control box is secured to the
machine.
• Check that the pothole protection switches are
securely mounted.
• Check that the elevation angle sensor is securely
mounted.
• Check the ANALYZER -> MACHINE SETUP -> MARKET
configuration.
• If MARKET is set to CE, ensure ANALYZER -> MACHINE
SETUP -> TILT CUTOUT parameter is set as desired.
• Check pothole protection switch adjustment.
• Backprobing ground board J1-18 should show about
0 volts.
• Backprobing ground board J1-10 should show about
0 volts.
• Calibrate the elevation sensor, see Section 5.5.
• Calibrate the tilt sensor, see Section 5.2.
006 LIFT UP PREVENTED -
MAX HEIGHT ZONE A The vehicle has reached the
maximum height and further lift
up motion is not possible. Appli-
cable to 2630ES or 3246ES. • Check that the zone is set appropriately for the plat-
form load.
• Check that the platform height is at the rated maxi-
mum height specification (20’ for 2630 or 26’ for the
3246).
• Check that the elevation angle sensor is securely
mounted.
• If there are any elevation sensor faults (DTC 251, 252,
2511, or 2512), troubleshoot those first.
• Check that ANALYZER -> MACHINE SETUP -> MODEL
setting is correct.
• Check that ANALYZER -> MACHINE SETUP -> MARKET
setting is correct.
• Check ANALYZER -> DIAGNOSTICS -> ELEV SENSOR ->
ZEROED is about 1.53V for the 3246 or about 1.22V for
the 2630 when at full height. If not, repair or replace
the elevation angle sensor.
007 DRIVING AT CUTBACK -
POTHOLE STILL
ENGAGED While stowed, drive speed is
reduced since the control sys-
tem detected that the pot-hole
protection mechanism failed to
retract. • Check for obstructions around the pot-hole protec-
tion mechanisms.
• Check that the PHP switches are securely mounted.
• Check PHP switches wiring from the ground board
and for proper operation. The left PHP input (24V) is
from J1-9 and its output (24V when deployed) is to J1-
10. The right PHP input (24V) is from J1-17 and its
output (24V when deployed) is to J1-18.
008 FUNCTIONS LOCKED
OUT - SYSTEM POW-
ERED DOWN After 2 hours without activity,
the control system enters a low-
power state to preserve battery
charge. • Normal operation should resume after a power cycle.
• Check batteries charge, condition, etc.
0-0 Help Comments
DTC FAULT MESSAGE DESCRIPTION CHECK