Oshkosh Corporation JLG 450AJ, Руководство по обслуживанию и ремонту

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SECTION 6 - JLG CONTROL SYSTEM
3121659 – JLG Lift – 6-53
TELESCOPE IN VALVE – OPEN
CIRCUIT 33189 The UGM detects an open circuit at this output (340AJ, 400S, 450AJ)
The UGM shall suspend Tele-
scope In and Out
(18RS, 24RS) The UGM shall
suspend Telescope In and Out
command and revert to Open
Loop Current control for Tele-
scope
The UGM shall prohibit Tele-
scope Out;
The UGM shall limit Telescope
In to Creep speed after con-
trols initialized
The UGM no longer detects open circuit;
Telescope Out permitted after controls are
initialized;
Full speed Telescope In permitted after con-
trols are initialized
TELESCOPE IN VALVE – SHORT
TO GROUND 33190 The UGM detects a short to ground at this output The UGM shall prohibit Tele-
scope In and Out Power Cycled
APU PUMP RELAY - OPEN CIR-
CUIT 33276 The UGM detects an open circuit at this output No response required for this
DTC Power Cycled
APU PUMP RELAY - SHORT TO
BATTERY 33277 The UGM detects a short to battery at this output Disable UGM APU Pump relay
output Power Cycled
APU PUMP RELAY - SHORT TO
GROUND 33278 The UGM detects a short to ground at this output Disable UGM APU Pump relay
output Power Cycled
GLOWPLUG – OPEN CIRCUIT 33279 MACHINE SETUP > ENGINE ≠ DUAL FUEL ECM
MACHINE SETUP > ENGINE ≠ DEUTZ EMR4
MACHINE SETUP > GLOW PLUG ≠ NO
The UGM detects an open circuit at this output
No response required for this
DTC Power Cycled
GLOWPLUG – SHORT TO BAT-
TERY 33280 MACHINE SETUP > ENGINE ≠ DUAL FUEL ECM
MACHINE SETUP > ENGINE ≠ DEUTZ EMR4
MACHINE SETUP > GLOW PLUG ≠ NO
The UGM detects a short to battery at this output
Disable UGM Glow Plug relay
output Power Cycled
GLOWPLUG – SHORT TO
GROUND 33281 MACHINE SETUP > ENGINE ≠ DUAL FUEL ECM
MACHINE SETUP > ENGINE ≠ DEUTZ EMR4
MACHINE SETUP > GLOW PLUG ≠ NO
The UGM detects a short to ground at this output
Disable UGM Glow Plug relay
output Power Cycled
LIFT – CURRENT FEEDBACK
READING TOO LOW 33287 The Engine State = ENGINE RUNNING;
The UGM commanded current > 250mA;
The difference between the commanded current and the
measured feedback current > [the larger of (125mA) or (15%
of the commanded function Max)] for longer than 1 second
The UGM shall suspend Lift
Up and Down command and
revert to Open Loop Current
control for Lift;
The UGM shall limit Lift Up
and Down to Creep speed
after controls initialized Power Cycled
SWING LEFT VALVE – OPEN CIR-
CUIT 33295 The UGM detects an open circuit at this output The UGM shall suspend Swing
Left and Right command and
revert to Open Loop Current
control for Swing;
The UGM shall limit Swing
Left and Right to Creep speed
after controls initialized The UGM no longer detects open circuit;
Full speed Swing Left and Right permitted
after controls are initialized
Table 6-5. Diagnostic Trouble Code Chart
Help Message DTC
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met unless
stated otherwise)
Required Control
Response or State
Assignment
Conditions Required for Movement
and/or to Clear Fault