JLG G12-55A Service Manual User Manual
Page 169
9-27
G10-55A, G12-55A
Electrical System
441
168
18
Amber
Electrical
Potential
(Voltage)
Battery #1 Voltage Low—Data Valid but Below
Normal Operational Range—Moderately
Severe Level
442
168
16
Amber
Electrical
Potential
(Voltage)
Battery #1 Voltage High—Data Valid but Above
Normal Operational Range—Moderately
Severe Level
449
157
0
Red
Injector
Metering Rail 1
Fuel Pressure High—Data Valid but Above Normal
Operational Range—Moderately Severe Level
451
157
3
Amber
Injector
Metering Rail 1
Injector Metering Rail #1 Pressure Sensor Circuit—
Voltage Above Normal, or Shorted to High Source
452
157
4
Amber
Injector
Metering Rail 1
Injector Metering Rail #1 Pressure Sensor Circuit—
Voltage Below Normal, or Shorted to Low Source
488
105
16
Amber
Intake Manifold
Manifold 1 Temperature—Data Valid but Above Nor-
mal Operational Range—Moderately Severe Level
489
191
18
Amber
Transmission
Output Shaft
Speed
Transmission Output Shaft Speed—Data Valid but
Below Normal Operational Range—Moderately
Severe Level
497
1377
2
Amber
Switch Circuit
Multiple Unit Synchronization Switch Circuit—Data
Erratic, Intermittent, or Incorrect
515
3514
3
Amber
Not Available
Sensor Supply 6 Circuit—Voltage above normal, or
shorted to high source
516
3514
4
Amber
Not Available
Sensor Supply 6 Circuit—Voltage below normal, or
shorted to low source
523
611
2
Amber
System code # 1
Diagnostic
OEM Intermediate (PTO) Speed switch Validation—
Data Erratic, Intermittent, or Incorrect
527
702
3
Amber
Circuit—Voltage
Auxiliary Input/Output 2 Circuit—Voltage Above
Normal, or Shorted to High Source
528
93
2
Amber
Switch—Data
Auxiliary Constrained Operation Curve Validation
Switch—Data Erratic, Intermittent, or Incorrect
529
703
3
Amber
Circuit—Voltage
Auxiliary Input/Output 3 Circuit—Voltage Above
Normal, or Shorted to High Source
553
157
16
Amber
Injector
Metering Rail 1
Pressure
Injector Metering Rail #1 Pressure High—Data Valid
but Above Normal Operational Range—Moderately
Severe Level
Fault
Codes
SPN
Codes
FMI
Codes
Lamp
Color
SPN
Description
Cummins Description