JLG G12-55A Service Manual User Manual
Page 172

Electrical System
9-30
G10-55A, G12-55A
1974
101
15
Amber/
Blink-
ing
Not Available
Crankcase Pressure—Data Valid But Above Normal
Operating Range—Least Severe Level
2185
3512
3
Sensor Supply 4 Circuit—Voltage above normal, or
shorted to high source
2186
611
4
Amber
System code # 1
Diagnostic
Sensor Supply 4 Circuit—Voltage Below Normal, or
Shorted to Low Source
2195
703
14
Auxiliary Equipment Sensor Input 3 Engine
Protection Critical—Special Instructions
2249
157
1
Amber
Injector
Metering Rail
1 Pressure
Injector Metering Rail 1 Pressure—Data Valid
but Below Normal Operational Range—Most
Severe Level
2272
27
4
Amber
Not Available
EGR Valve Position Circuit—Voltage Below Normal,
or Shorted to Low Source
2288
103
15
None
Not Available
Turbocharger 1 Speed—Data Valid But Above
Normal Operating Range—Least Severe Level
2311
633
31
Amber
Fuel Control
Valve #1
Fueling Actuator #1 Circuit Error—Condition Exists
2321
190
2
None
Engine Speed
Engine Speed / Position Sensor #1—Data Erratic,
Intermittent, or Incorrect
2322
723
2
None
Engine Speed
Sensor #2
Engine Speed / Position Sensor #2—Data Erratic,
Intermittent, or Incorrect
2349
2791
5
Amber
Not Available
EGR Valve Control Circuit—Current below normal or
open circuit
2353
2791
6
EGR Valve Control Circuit—Current above normal
or grounded circuit
2357
2791
7
Amber
Not Available
EGR Valve Control Circuit—Mechanical system not
responding or out of adjustment
2372
95
16
Fuel Filter Differential Pressure—Data Valid But
Above Normal Operating Range—Moderately
Severe Level
2373
1209
3
Amber
Exhaust Gas
Pressure
Exhaust Gas Pressure Sensor Circuit—Voltage
Above Normal, or Shorted to High Source
Fault
Codes
SPN
Codes
FMI
Codes
Lamp
Color
SPN
Description
Cummins Description