JLG TOUCAN 8E Service And Maintenance Manual page 148

SECTION 10 - DIAGNOSTIC TROUBLE CODES
DTC FAULT MESSAGE
2374 MAST SWITCH FAULTY
2375 JIB SWITCH FAULTY
2376 SWING SWITCH FAULTY
2377 CHAIN SLACK SWITCH DIS-
AGREEMENT
2378
MAIN MAST LIMIT SWITCH -
DECOUPLED
10-6
DESCRIPTION
The Mast Lift Up and Down switches are
active simultaneously.
The Jib Lift Up and Down switches are
active simultaneously.
The Swing Left and Right switches are
active simultaneously.
Chain slack switch controllers' inputs are
not the same for more than 1 second.
The information from the Mast Limit
switches is not consistent.
– JLG Lift –
CHECK
• Check if one of the concerned switch is damaged,
obstructed or jammed.
• Disconnect the membrane panel ribbon cable :
replace the membrane panel if DTC is no longer
present.
• Check both switch lines voltage : J3(6), CR1(21),
CR3(20) and J3(7), CR1(22), CR2(32).
• Check if one of the concerned switch is damaged,
obstructed or jammed.
• Disconnect the membrane panel ribbon cable :
replace the membrane panel if DTC is no longer
present.
• Check both switch lines voltage : J3(8), CR1(30),
CR3(17) and J3(9), CR1(31), CR2(16).
• Check if one of the concerned switch is damaged,
obstructed or jammed.
• Disconnect the membrane panel ribbon cable :
replace the membrane panel if DTC is no longer
present.
• Check both switch lines voltage : J3(11), CR1(33),
CR3(29) and J3(10), CR1(32), CR2(31).
• Check the wiring between the two controllers
CR2(35) to CR3(35) ) and the connections.
• Check if one of the concerned limit switches is
damaged, obstructed or jammed.
• Check the mast switches wiring :
Mast stowed :
@ +Vbatt : CR4(A), CR23(1), CR23(4), CR23(3),
CR23(6), CR5(3), CR5(5), CR2(31), CR2(20).
@ -Vbatt : CR4(B), CR4(C), CR23(2), CR23(5).
Mast elevated :
@ +Vbatt : CR4(A), CR4(B), CR23(1), CR23(2),
CR23(4), CR23(6), CR5(5), CR2(20).
@ -Vbatt : CR4(C), CR23(3), CR23(5), CR5(3),
CR2(31).
Mast fully elevated :
@ +Vbatt : CR4(A), CR4(B), CR4(C), CR23(1),
CR23(2), CR23(4), CR23(5).
@ -Vbatt : CR23(3), CR23(6), CR5(3), CR5(5),
CR2(20), CR2(31).
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