JLG 400S Service And Maintenance Manual page 510

SECTION 6 - JLG CONTROL SYSTEM
Help Message DTC
DRIVE FORWARD VALVE – 33317
OPEN CIRCUIT
DRIVE VALVES – SHORT TO BAT- 33318 The UGM detects a short to battery at either the Drive
TERY
DRIVE FORWARD VALVE – 33319 The UGM detects a short to ground at this output
SHORT TO GROUND
DRIVE REVERSE VALVE – OPEN 33320 The UGM detects an open circuit at this output
CIRCUIT
DRIVE REVERSE VALVE – SHORT 33322 The UGM detects a short to ground at this output
TO GROUND
DRIVE – CURRENT FEEDBACK 33331 The Engine State = ENGINE RUNNING;
READING TOO LOW
LIFT UP VALVE – SHORT TO 33406 The UGM detects a short to ground at this output
GROUND
LIFT DOWN VALVE – SHORT TO 33407 The UGM detects a short to ground at this output
GROUND
6-70
Table 6-11. Diagnostic Trouble Code Chart
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met
unless stated otherwise)
The UGM detects an open circuit at this output
Forward or Drive Reverse valve.
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
Required Control
Conditions Required for Movement
Response or State
and/or to Clear Fault
Assignment
The UGM shall suspend The UGM no longer detects open circuit;
Drive Forward and Full speed Drive Forward and Reverse per-
Reverse command and mitted after controls are initialized
revert to Open Current
loop control for Drive;
The UGM shall limit Drive
Forward and Reverse to
Creep speed after controls
initialized
The UGM shall prohibit Power Cycled
Drive Forward and
Reverse;
The UGM shall open the
Drive Current Feedback
low side FET
The UGM shall prohibit Power Cycled
Drive Forward and
Reverse
The UGM shall suspend The UGM no longer detects open circuit;
Drive Forward and Full speed Drive Forward and Reverse per-
Reverse command and mitted after controls are initialized
revert to Open Current
loop control for Drive;
The UGM shall limit Drive
Forward and Reverse to
Creep speed after controls
initialized
The UGM shall prohibit Power Cycled
Drive Forward and
Reverse
The UGM shall suspend Power Cycled
Drive Forward and
Reverse command and
revert to Open Current
loop control for Drive;
The UGM shall limit Drive
Forward and Reverse to
Creep speed after controls
initialized
The UGM shall prohibit Power Cycled
Lift Up;
The UGM shall limit Lift
Down Creep speed
The UGM shall prohibit Power Cycled
Lift Up and Down
X X
X X
X X
X X
X X
X X
X X
X X
3121671