JLG 3246ES Service Manual - Manual (Page 169)

SECTION 6 - DIAGNOSTIC TROUBLE CODES
3121166 – JLG Lift – 6-17
662
(Cont.
)
CANBUS FAILURE - PLAT-
FORM MODULE
(Continued) In platform mode, the control
system failed to receive mes-
sages from the platform board. • Disconnect platform box connector. Open platform
box. Disconnect platform board connector. Platform
box socket E to platform board J1-3 should have con-
tinuity. Platform box socket F to platform board J1-4
should have continuity. Platform box pin E to pin F
should measure open circuit. Platform box pin E to pin
G should measure open circuit. Platform box pin F to
pin G should measure open circuit. If these checks are
OK replace platform board.
663 CANBUS FAILURE - LOAD
SENSING SYSTEM MOD-
ULE With load sensing system
enabled, the control system
failed to receive messages from
the load sensing system mod-
ule. • Check ANALYZER -> MACHINE SETUP -> MODEL NUM-
BER is correct.
• Check ANALYZER -> MACHINE SETUP -> MARKET is
correct.
• Check ANALYZER -> MACHINE SETUP -> LOAD is cor-
rect.
• Check for 24V between load sense system module
connector J1-1 and J1-2.
• Turn on machine in platform mode. If DTC 662 is pres-
ent, troubleshoot that DTC before continuing.
• Refer to Section 2.3: Troubleshooting in the LSS man-
ual, 3124288.
664 CANBUS FAILURE -
ACCESSORY MODULE An accessory module has
stopped communication. • Turn on machine in platform mode. If DTC 662 is pres-
ent, troubleshoot that DTC before continuing.
• See accessory module documentation for trouble-
shooting.
6635 CANBUS FAILURE -
CHASSIS TILT SENSOR
Chassis Tilt Sensor messages not
received for 1000 mS while B+ is
present on J1-28 • The control system failed to receive messages from
the Chassis Tilt Sensor located inside the Ground Con-
trol Box.
• Ensure that +B is present on pin 1 of the sensor, and -B
is present on pin 4. Check the CANbus wiring to pins 2
and 3 of the sensor.
• ZAPI - HEALTH (Status LED) - ON
6-7 Accessory
DTC FAULT MESSAGE DESCRIPTION CHECK
671 ACCESSORY FAULT An accessory module is report-
ing a fault. • See accessory module documentation for trouble-
shooting.
7-7 Electric Motor
DTC FAULT MESSAGE DESCRIPTION CHECK
771 OPEN CIRCUIT DRIVE
MOTOR WIRING The power module detected a
problem in the drive motors'
power circuit wiring. • Refer to Drive Motor Electrical Evaluation in Section
3.5.
• Refer to Power Module Electrical Evaluation in Section
3.6.
772 STALLED TRACTION
MOTOR OR POWER WIR-
ING ERROR Drive, Steer, and Lift Prevented • The System Module detected armature current feed-
back > 4.5V or < 0.5V. This is mostly likely caused by a
stalled traction motor or power wiring issue. Alter-
nately, it could be an internal fault.
• ZAPI - HEALTH (Status LED) - ON
6-6 Communication
DTC FAULT MESSAGE DESCRIPTION CHECK