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

SECTION 2 - TROUBLESHOOTING BY FAULT MESSAGES

2.63 FUNCTION PROBLEM - LEVEL DOWN PERMANENTLY SELECTED

Distress Lamp: 1
The ground level down switch was closed when the machine was powered. The switch could be accidentally held, mechan-
ically stuck, or electrically shorted.
Functions Disabled at Ground Only: Level Down
Step Pretest Instructions
2.63.1
2.63.2 Disconnect X034. Place key
switch in ground position and
pull the emergency stop
switch.
2.63.3 Remove X014.26.pin from
X014. Place key switch in
ground position and pull the
emergency stop switch.
2.63.4 Place key switch in ground
position and pull the emer-
gency stop switch.

2.64 FUNCTION PROBLEM - LEVEL UP AND DOWN BOTH SELECTED

Distress Lamp: 9
The digital inputs from both level up and level down ground panel switches are active.
Functions Disabled at Ground Only: Level Up, Level Down
Step Pretest Instructions
2.64.1 Disconnect X034. Pull the
ground emergency stop
switch and place key switch in
the ground position
2.64.2 Disconnect X014. Hold the
enable switch.
2.64.3 Disconnect X014. Hold the
enable switch.
2.64.4 Remove X004.17.soc from
X004
2-70
ADE Code: 2-3
Test
Is the switch mechanically
stuck?
Is fault "Function Problem -
Level Down Permanently
Selected"still present?
Is fault "Function Problem -
Level Down Permanently
Selected"still present?
Measured voltage at X004.5
= Vbatt?
ADE Code: 2-3
Test
Is fault "Function Problem -
Level Up And Down Both
Selected"still present?
Measure continuity between
X014.27.pin and X014.1.pin
Measure continuity between
X014.26.pin and X014.1.pin
Is fault "Function Problem -
Level Up And Down Both
Selected"still present?
T350 T500J
Result
Yes
No
Yes
No
Yes
No
Yes
No
Result
Yes
No
Yes
No
Yes
No
Yes
No
Corrective Action
Repair or replace the switch
Go to step 2.63.2
Go to step 2.63.3
Possible Causes: 4.1.18
Go to step 2.63.4
Possible Causes: Short in Pink 26-2
wire
Possible Causes: Short in Pink 26-2-1
wire, 4.1.10
Possible Causes: 4.1.10
Corrective Action
Go to step 2.64.2
Possible Causes: 4.1.18
Possible Causes: Short in Pink 25-2
wire.
Go to step 2.64.3
Possible Causes: Short in Pink 26-2
wire.
Go to step 2.64.4
Possible Causes: 4.1.10
Possible Causes: Short in Pink 25-2-1
wire or Pink 26-2-1 wire
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