JLG G12-55A AccuPlace Service Manual - Manual (Page 215)

9.97 G10-55A & G12-55A AccuPlace
Electrical System
CANBUS
FAILURE – LIFT
VALVE 6626 ISP communicates
SPN/FMI: 2161/11 Y Cycle power to see if fault clears.
If multiple CAN Bus faults are occurring,
the integrity of connections and continuity
of the entire CAN Bus must be checked.
Otherwise, with power off, unplug the Lift
Valve and with a multimeter verify
approximately 60ohms between CANH
and CANL in the machine harness. Turn
power on a verify +12V between power
and ground pins. Also, verify that the
ground pin has less than 1.0ohms
resistance to a good chassis (B-)
connection. Turn power off, reconnect Lift
Valve, and power on. If fault still exists,
unplug connector to Lift Valve and verify
the connectivity in the 12-pin Deutsch
connector. Remove the wedge and pull
each termination back past the rubber
seal. Lightly tug on each wire and inspect
the crimp.
Check the integrity of the M12 connector
termination at the green CAN Distribution
module. Disconnect, clean, and
reconnect. Do not add dielectric grease,
as the pins may not engage properly. The
spare connection in the CAN Distribution
module may also be used as a means to
verify connectivity of the M12 connector.
The functionality of the system will remain
unchanged if the spare M12 connection is
used.
Note: Although similar, the Lift Valve and
Tele Valve harnesses are not directly
interchangeable for troubleshooting
purposes because the current feedback
wires populate different connector pins.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)