User guide

Systems and Equipment - 146 JT25 Operator’s Manual
Diagnostic Codes
CMW
558 2 amber accelerator pedal or lever
idle validation switch
data erratic, intermittent, or incorrect
558 13 red accelerator pedal or lever
idle validation switch
out of calibration
558 9 red accelerator pedal or lever
idle validation switch
abnormal update rate
612 2 red engine magnetic speed/
position lost both of two
signals
data erratic, intermittent or incorrect
627 12 amber injector power supply bad intelligent device or component
627 2 none power supply lost with
ignition on
data erratic, intermittent, or incorrect
629 12 red engine control module critical
internal failure
bad intelligent device or component
629 12 amber engine control module
warning internal hardware
failure
bad intelligent device or component
633 31 amber electronic fuel injection
control valve
condition exists
639 9 amber SAE J1939 multiplexing PGN
timeout error
abnormal update rate
639 13 amber SAE J1939 multiplexing
configuration error
out of calibration
651 5 amber injector solenoid driver
cylinder 1
current below normal or open circuit
652 5 amber injector solenoid driver
cylinder 2
current below normal or open circuit
653 5 amber injector solenoid driver
cylinder 3
current below normal or open circuit
654 5 amber injector solenoid driver
cylinder 4
current below normal or open circuit
677 3 amber starter relay driver voltage above normal or shorted to high
source
677 4 amber starter relay driver voltage below normal or shorted to low
source
703 14 red auxiliary equipment sensor
input 3 engine protection
critical
special instruction
SPN FMI Warning
Color
Circuit Error Description