Function Problem - Lift Up And Down Both Selected; Function Problem - Lift Up Permanently Selected - JLG T350 Troubleshooting Manual

SECTION 2 - TROUBLESHOOTING BY FAULT MESSAGES

2.67 FUNCTION PROBLEM - LIFT UP AND DOWN BOTH SELECTED

Distress Lamp: 9
The digital inputs from both lift up and lift down ground panel switches are active.
Functions Disabled at Ground Only: Lift Up, Lift Down
Step Pretest Instructions
2.67.1 Disconnect X031. Pull the
ground emergency stop
switch and place key switch in
the ground position
2.67.2 Disconnect X014. Hold the
enable switch.
2.67.3 Disconnect X014. Hold the
enable switch.
2.67.4 Remove X004.23.soc from
X004

2.68 FUNCTION PROBLEM - LIFT UP PERMANENTLY SELECTED

Distress Lamp: 1
The ground lift up switch was closed when the machine was powered. The switch could be accidentally held, mechanically
stuck, or electrically shorted.
Functions Disabled at Ground Only: Lift Up
Step Pretest Instructions
2.68.1
2.68.2 Disconnect X031. Place key
switch in ground position and
pull the emergency stop
switch.
2.68.3 Remove X014.23.pin from
X014. Place key switch in
ground position and pull the
emergency stop switch.
2.68.4 Place key switch in ground
position and pull the emer-
gency stop switch.
2-72
ADE Code: 2-3
Test
Is fault "Function Problem -
Lift Up And Down Both
Selected"still present?
Measure continuity between
X014.23.pin and X014.1.pin
Measure continuity between
X014.22.pin and X014.1.pin
Is fault "Function Problem -
Lift Up And Down Both
Selected"still present?
ADE Code: 2-3
Test
Is the switch mechanically
stuck?
Is fault "Function Problem -
Lift Up Permanently
Selected"still present?
Is fault "Function Problem -
Lift Up Permanently
Selected"still present?
Measured voltage at
X004.23 = Vbatt?
T350 T500J
Result
Yes
No
Yes
No
Yes
No
Yes
No
Result
Yes
No
Yes
No
Yes
No
Yes
No
Corrective Action
Go to step 2.67.2
Possible Causes: 4.1.18
Possible Causes: Short in Tan 3-2 wire.
Go to step 2.67.3
Possible Causes: Short in Tan 4-2 wire.
Go to step 2.67.4
Possible Causes: 4.1.10
Possible Causes: Short in Tan 3-2-1
wire or Tan 4-2-1 wire
Corrective Action
Repair or replace the switch
Go to step 2.68.2
Go to step 2.68.3
Possible Causes: 4.1.18
Go to step 2.68.4
Possible Causes: Short in Tan 3-2 wire
Possible Causes: Short in Tan 3-2-1
wire, 4.1.10
Possible Causes: 4.1.10
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