Dump Solenoid Short To Ground; Eeprom Failure - Check All Settings; Engine Not Running - JLG T350 Troubleshooting Manual

SECTION 2 - TROUBLESHOOTING BY FAULT MESSAGES

2.42 DUMP SOLENOID SHORT TO GROUND

Distress Lamp: 9
Ground module feedback shows that Dump Valve PWM output may be shorted to ground or the solenoid may be defective
ENGINE POWERED MACHINES ONLY
Functions Disabled (Engine Powered Machines Only): Lift Up, Lift Down, Swing Left, Swing Right, Telescope In, Telescope
Out, Jib Up, Jib Down, Level Up, Level Down, Front Left O/R, Front Right O/R, Rear Left O/R, Rear Right O/R, Set (Extend O/
R), Stow (Retract O/R)
Step Pretest Instructions
2.42.1 Disconnect solenoid at X087
and isolate wires
2.42.2 Remove wire Red/Wht 50-1-1
from X002.9

2.43 EEPROM FAILURE - CHECK ALL SETTINGS

Distress Lamp: 9
The control system detected an internal memory failure. Personalities and Machine Setup settings may be reset to default
values.
Functions Disabled: Lift Up, Lift Down, Swing Left, Swing Right, Telescope In, Telescope Out, Jib Up, Jib Down, Level Up,
Level Down, Front Left O/R, Front Right O/R, Rear Left O/R, Rear Right O/R, Set (Extend O/R), Stow (Retract O/R), Engine
Start, Engine Throttle Pull, Engine Throttle Hold, Engine Choke Pull, Engine Choke Hold
Possible Causes: 4.1.16, 4.1.10

2.44 ENGINE NOT RUNNING

Distress Lamp: 5
The control system does not detect that the engine is running (Engine RPM is Zero AND Machine Setup's POWER is set to
1=ENGINE). If the engine will not start, see 1.6 Engine Will Not Crank - Engine Models or 1.7 Engine Cranks But Will Not
Start - Engine Models
ENGINE POWERED MACHINES ONLY
Functions Disabled (Engine Powered Machines Only): Lift Up, Swing Left, Swing Right, Telescope In, Telescope Out, Jib Up,
Level Up, Level Down, Front Left O/R, Front Right O/R, Rear Left O/R, Rear Right O/R, Set (Extend O/R), Stow (Retract O/R)
Step Pretest Instructions
2.44.1 Start Engine
2.44.2
2-60
ADE Code: 3-3
Test
Rerun System Test
Rerun System Test
ADE Code: 9-9
ADE Code: None
Test
ANALYZER -> DIAGNOS-
TICS -> ENGINE SPEED >
0RPM?
Check for continuity
between X001.16.soc and
X095
T350 T500J
Result
Analyzer Message "DUMP VALVE
OPEN CIRCUIT"
Analyzer Message "DUMP VALVE
SHORT TO GROUND"
Analyzer Message "DUMP VALVE
OPEN CIRCUIT"
Analyzer Message "DUMP VALVE
SHORT TO GROUND"
Result
Yes
No
Yes
No
Corrective Action
Repair/Replace solenoid
Go to step 2.42.2
Wire Red/Wht 50-1-1 or Red/Wht 50-1
shorted to ground. Repair or replace
Possible Cause: 4.1.10
Corrective Action
Possible Cause:4.1.2, 4.1.10
Go to step 2.44.2
Possible Cause:4.1.21, 4.1.21, 4.1.2,
4.1.10
Repair WHT/YEL 48-7 or WHT/YEL 48-
13-1 between X001.16 and X095
3121203