SECTION 5 - JLG CONTROL SYSTEM
5-52
31215923
7725
7
7 "Pump Motor - Not Respondng"
Lift Up, Leveling Jacks and Steer
Functions are Prevented.
Drive Speed is Restricted to Elevated
Speed.
• UGM is detecting that the Right Power Module is communi-
cating that the Pump Current Feedback is too high.
• Cycle Power and see if the issue re-occurs.
• This is an internal Module Failure and the module will need
replaced. Contact JLG Support.
7730
7
7 "Pump Motor Output - Out Of Range High" Lift Up, Leveling Jacks and Steer
Functions are Prevented.
Drive Speed is Restricted to Elevated
Speed.
• UGM is detecting that the Right Power Module is communi-
cating that the Pump Voltage Feedback is higher than the
expected value.
• Check the cables between the Pump and the Power Module
P- terminal for any damage and ensure connections are
tight. If there are no issues found, the module may need
replaced.
7731
7
7 "Pump Motor Output - Out Of Range Low" Drive, Lift Up and Leveling Jack Func-
tions are Prevented.
• UGM is detecting that the Right Power Module is communi-
cating that the Pump Output is lower than the expected
value.
• Check the cables between the Pump and the Power Module
P- terminal for any damage and ensure connections are
tight. If there are no issues found, the module may need
replaced.
7753
7
7 "Rear Left Motor Stalled"
Drive is Prevented.
• UGM is detecting that the Left Power Module is communi-
cating that drive speed is being commanded greater than 10
Hz and the actual drive speed is less than 0.6 Hz. (Drive com-
manded and drive motor not turning).
• Check all connectors between the module (CO371-J1) and
Left Drive Motor (MS377-A) for damage and faulty wiring.
Ensure the correct Power software is installed on the control-
ler. If there are no wiring issues are found and the fault con-
tinues, then the Module may need replaced.
7754
7
7 "Rear Right Motor Stalled"
Drive is Prevented.
• UGM is detecting that the Right Power Module is communi-
cating that drive speed is being commanded greater than 10
Hz and the actual drive speed is less than 0.6 Hz. (Drive com-
manded and drive motor not turning).
• Check all connectors between the module (CO342-J1) and
Right Drive Motor (MS375-A) for damage and faulty wiring.
Ensure the correct Power software is installed on the control-
ler. If there are no wiring issues are found and the fault con-
tinues, then the Module may need replaced.
7757
7
7 "Rear Left Motor Output - Out Of Range
High"
Drive, Lift Up and Leveling Jack Func-
tions are Prevented.
• UGM is detecting that the Left Power Module is communi-
cating that the Left Drive Motor Phase Voltage value is out-
side of the expected range.
• Check the Drive Motor Phase Voltage cable connections W, U
and V are properly connected at the drive motor. Check the
cable connections at the module terminals. Check the cables
for continuity or damage. Check the drive motor for internal
damage. If no issues are found, then the module may need
replaced.
DTC
Code
Flash
Code
Description
Action
Item Check List
Содержание ERT2669
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Страница 4: ...INTRODUCTION A 2 31215923 REVISON LOG Original Issue A January 08 2021...
Страница 12: ...viii 31215923 TABLE OF CONTENTS...
Страница 40: ...SECTION 1 SPECIFICATIONS 1 22 31215923...
Страница 58: ...SECTION 2 GENERAL 2 18 31215923...
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Страница 221: ...SECTION 4 BASIC HYDRAULIC INFORMATION SCHEMATICS 31215923 4 45 Figure 4 33 Lift Cylinder MAF46290...
Страница 223: ...SECTION 4 BASIC HYDRAULIC INFORMATION SCHEMATICS 31215923 4 47 Figure 4 35 Leveling Jack Cylinder MAF46280...
Страница 225: ...SECTION 4 BASIC HYDRAULIC INFORMATION SCHEMATICS 31215923 4 49...
Страница 242: ...SECTION 4 BASIC HYDRAULIC INFORMATION SCHEMATICS 4 66 31215923...
Страница 307: ...SECTION 5 JLG CONTROL SYSTEM 31215923 5 65...
Страница 334: ...SECTION 6 LSS SETUP CALIBRATION SERVICE 6 12 31215923...
Страница 362: ...SECTION 7 GENERAL ELECTRICAL INFORMATION SCHEMATICS 7 28 31215923...
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