JLG G12-55A AccuPlace Service Manual - Manual (Page 217)

9.99 G10-55A & G12-55A AccuPlace
Electrical System
CANBUS
FAILURE – FORK
VALVE 6628 ISP communicates
SPN/FMI: 2163/11 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 Fork
Valve and with a multimeter verify
approximately 60ohms between CANH
and CANL in the machine harness. Turn
power on and 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
Fork Valve, and power on. If fault still
exists, unplug connector to Fork 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.
CANBUS
FAILURE –
TELEMATICS
LOADING TOO
HIGH 6629 An excessive number of
messages are being
broadcast from the
Telematics Control Unit. N This fault may cause an inoperable
joystick. Disconnect the Telematics
Control Unit from CAN2. If fault still exists,
check power and CAN connections within
CAN2 cab harness.
CANBUS
FAILURE – ISP 6630 UGM has not received a
CAN Bus message from the
ISP within 60ms. 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 ISP
and with a multimeter verify approximately
60ohms between CANH and CANL in the
machine harness. Turn power on and
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 ISP, and power on. If fault still
exists, unplug connector to ISP 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.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)