JLG G12-55A Service Manual User Manual
Page 191
9-49
G10-55A, G12-55A
Electrical System
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 Pressure
Fuel Pressure High - Data Valid but Above
Normal Operational Range - Moderately Severe
Level
451
157
3
Amber
Injector Metering
Rail 1 Pressure
Injector Metering Rail #1 Pressure Sensor
Circuit - Voltage Above Normal, or Shorted to
High Source
452
157
4
Amber
Injector Metering
Rail 1 Pressure
Injector Metering Rail #1 Pressure Sensor
Circuit - Voltage Below Normal, or Shorted to
Low Source
488
105
16
Amber
Intake Manifold
Intake Manifold 1 Temperature - Data Valid but
Above Normal 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
AEB15.60 Page 151 of 157 Multiple Unit
Synchronization Switch Circuit - Data Erratic,
Intermittent, or Incorrect
523
611
2
Amber
System Diagnostic
code #1
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 Alternate Torque 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
546
94
3
Amber
Fuel Delivery
Pressure
Fuel Delivery Pressure Sensor Circuit - Voltage
Above Normal, or Shorted to High Source
547
94
4
Amber
Fuel Delivery
Pressure
Fuel Delivery Pressure Sensor Circuit - Voltage
Below Normal, or Shorted to Low Source
551
558
4
Amber
Accelerator Pedal
Low Idle Switch
Accelerator Pedal or Lever Idle Validation
Circuit - Voltage Below Normal, or Shorted to
Low 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