JLG G12-55A AccuPlace Service Manual - Manual (Page 202)

Electrical System
9.84 G10-55A & G12-55A AccuPlace
TELESCOPE
VALVE COIL 4 –
SHORT TO
BATTERY 4561 Tele valve controller detects
uncommanded current in
feedback circuit. Y Check for continuity through this circuit.
Inspect wiring for physical damage.
Disconnect TELE V4 coil connection,
cycle power, and verify that fault changes
to DTC 4560 (open circuit); then check the
V4 coil connector/pins and wiring. If the
fault remains, remove the 12-pin
connector and verify the integrity of the
connector pins of both the controller and
harness, then dislodge TELE V4 RTN pin
from the connector, reconnect the 12-pin
connector, and cycle power. If the fault still
remains, dislodge the TELE V4 pin,
reconnect, and cycle power. If the fault
persists, continue this pattern until all the
wires are dislodged. If the only wires
remaining are power and CAN Bus and a
STB fault still exists, then the fault lies
within the valve controller and
replacement is necessary.
FORK VALVE
COIL 1 – SHORT
TO BATTERY 4563 Fork valve controller detects
uncommanded current in
feedback circuit. Y Check for continuity through this circuit.
Inspect wiring for physical damage.
Disconnect FORK V1 coil connection,
cycle power, and verify that fault changes
to DTC 4562 (open circuit); then check the
FORK V1 coil connector/pins and wiring.
If the fault remains, remove the 12-pin
connector and verify the integrity of the
connector pins of both the controller and
harness, then dislodge FORK V1 RTN pin
from the connector, reconnect the 12-pin
connector, and cycle power. If the fault still
remains, dislodge the FORK V1 pin,
reconnect, and cycle power. If the fault
persists, continue this pattern until all the
wires are dislodged. If the only wires
remaining are power and CAN Bus and a
STB fault still exists, then the fault lies
within the valve controller and
replacement is necessary.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)