Lift Down Prevented - Tele In First; Lift Down Solenoid Open Circuit - JLG T350 Troubleshooting Manual

SECTION 2 - TROUBLESHOOTING BY FAULT MESSAGES

2.104 LIFT DOWN PREVENTED - TELE IN FIRST

Distress Lamp: 2
The ground module senses the controls in the lift down position, but the boom telescope limit switch is open and
RETRIEVAL-A or RETRIEVAL-B are active. While RETRIEVAL-A or RETRIEVAL-B are active, the boom must be completely
telescoped in, closing the telescope limit switch, before the boom can be lowered.
Functions Disabled: Lift Down
Step Pretest Instructions
2.104.1
2.104.2
2.104.3
2.104.4

2.105 LIFT DOWN SOLENOID OPEN CIRCUIT

Distress Lamp: 9
Ground module feedback shows that the Lift Down PWM output may be disconnected or the solenoid may be defective.
Functions Disabled: Lift Down
Step Pretest Instructions
2.105.1 Short X039.1.soc to
X039.2.soc
2.105.2 Short X016.1.pin to
X016.2.pin
2.105.3 Short X002.22.pin to B-
2-90
ADE Code: 2-5
Test
Is the boom fully retracted?
Is the machine tilted more
than 4.5 degrees?
Have any outriggers come
unset?
ANALYZER ->DIAGNOS-
TICS -> SYSTEM -> TILT
>= 4.5 DEG (platform tilt
LED illuminated)
ADE Code: 3-3
Test
Is the fault removed?
Is the fault removed?
Is the fault removed?
T350 T500J
Result
Yes
No
Yes
No
Yes
No
Yes
No
Result
Yes
No
Yes
No
Yes
No
Corrective Action
See 3.15 Telescope Limit Switch
Go to step 2.104.2
Retract the boom before lowering
Go to step 2.104.3
Retract the boom before lowering
Go to step 2.104.4
See 3.16 Tilt Sensor
See 3.11 Outrigger Switches - All Set
Corrective Action
Repair/Replace solenoid
Go to step 2.105.2
Tan 4-3 or black wire broken between
X016 and X039. Repair or replace
Go to step 2.105.3
Tan 4-3-1 or black wire broken
between X002 and X016. Repair or
replace
Possible Causes: 4.1.10
3121203