JLG G12-55A AccuPlace Service Manual - Manual (Page 196)

Electrical System
9.78 G10-55A & G12-55A AccuPlace
TELESCOPE
VALVE COIL 3 –
SHORT TO
GROUND OR
OPEN CIRCUIT 4558 Tele valve controller detects
too large of an error between
coil drive current and
feedback. Detection shall
occur during Startup and
Tele Retract. Y Inspect wiring for physical damage.
Check for continuity through this circuit.
On the 12-pin valve controller connector,
verify that the TELE V3 wire in pin 5 and
TELE V3 RTN in pin 7 are properly seated,
as well as the connections on the V3 coil.
Current Command and Feedback values
may be monitored via the Analyzer under
Diagnostics/Tele Valve to help with the
assessment.
LIFT VALVE COIL
4 – SHORT TO
GROUND OR
OPEN CIRCUIT 4553 Lift valve controller detects
too large of an error between
coil drive current and
feedback. Detection shall
occur during Startup and Lift
Down. Y Inspect wiring for physical damage.
Check for continuity through this circuit.
On the 12-pin valve controller connector,
verify that the LIFT V4 wire in pin 6 and
LIFT V4 RTN in pin 10 are properly
seated, as well as the connections on the
V4 coil.
Current Command and Feedback values
may be monitored via the Analyzer under
Diagnostics/Lift Valve to help with the
assessment.
TELESCOPE
VALVE COIL 4 –
SHORT TO
GROUND OR
OPEN CIRCUIT 4560 Tele valve controller detects
too large of an error between
coil drive current and
feedback. Detection shall
occur during Startup and
Tele Extend. Y Inspect wiring for physical damage.
Check for continuity through this circuit.
On the 12-pin valve controller connector,
verify that the TELE V4 wire in pin 6 and
TELE V4 RTN in pin 10 are properly
seated, as well as the connections on the
V4 coil.
Current Command and Feedback values
may be monitored via the Analyzer under
Diagnostics/Tele Valve to help with the
assessment.
Help Message
1
DTC Fault Condition
(for configurable items,
fault applies only if
configured)
Fault
Requires
AccuPlace
Reset?
Action(s)