Ground Output Driver - JLG Toucan 12E Service And Maintenance Manual

SECTION 10 - DIAGNOSTIC TROUBLE CODES

3-3 Ground Output Driver

DTC Help Message
GROUND ALARM The Ground Module detects a short to
3311
– SHORT TO BAT- +VSupply at the Ground Alarm Output.
TERY
PLATFORM LEVEL The Ground Module detects a short to -
3382
UP VALVE – VSupply at the Platform Level Up Valve out-
SHORT TO put.
GROUND
PLATFORM LEVEL The Ground Module detects an open circuit
3383
UP VALVE – OPEN at the Platform Level Up Valve output.
CIRCUIT
PLATFORM LEVEL The Ground Module detects a short to -
3388
DOWN VALVE – VSupply at the Platform Level Down Valve
SHORT TO output.
GROUND
PLATFORM LEVEL The Ground Module detects an open circuit
3389
DOWN VALVE – at the Platform Level Down Valve output.
OPEN CIRCUIT
33118 SWING RIGHT The Ground Module detects a short to -
VALVE – SHORT VSupply at the Swing Right Valve output.
TO GROUND
10-16
Condition Producting DTC
– JLG Lift –
Control system Response or
Machine Condition
• Check the UGM driver output
C084-J2(7) for a short circuit
with +VSupply.
• If the harness is correct:
Replace the ground alarm
• If the harness and the ground
alarm are correct and if the
fault appears at start up:
Replace the UGM.
• Check the valve driver output
C084-J2(5) and C084-J3(1)
for a short circuit with -VSup-
ply.
• If the wiring is correct, the
driver circuit is damaged :
replace the UGM.
• Check the valve harness for
signs of damage
• Check the valve coil connec-
tions and wiring for interrup-
tions.
• Check the valve coil for cor-
rect impedance (refer to
• Section 7-5).
• Replace the UGM if the coil
and its harness are correct.
• Check the valve driver output
C084-J2(7) and C084-J3(1)
for a short circuit with -VSup-
ply.
• If the wiring is correct, the
driver circuit is damaged :
replace the UGM.
• Check the valve harness for
signs of damage
• Check the valve coil connec-
tions and wiring for interrup-
tions.
• Check the valve coil for cor-
rect impedance (refer to Sec-
tion 7-5).
• Replace the UGM if the coil
and its harness are correct.
• Check the valve driver output
C084-J2(35) and C084-
J3(4) for a short circuit with -
VSupply.
• If the wiring is correct, the
driver circuit is damaged :
replace the UGM."
Corrective Action/Operational
Requirement for Function
Movement and/or to Clear Fault
Refer problem to a qualified JLG
mechanic.
Refer problem to a qualified JLG
mechanic.
Refer problem to a qualified JLG
mechanic.
Refer problem to a qualified JLG
mechanic.
Refer problem to a qualified JLG
mechanic.
Refer problem to a qualified JLG
mechanic.
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