Navistar N9 Diagnostic Manual page 24

20 1 DIAGNOSTIC TROUBLESHOOTING PROCEDURES
SPN FMI Sub-section
4360 3 SCRIT (page 1954)
4360 4 SCRIT (page 1954)
4360 16 SCRIT (page 1954)
4363 0 SCROT (page 1968)
4363 2 SCROT (page 1968)
4363 3 SCROT (page 1968)
4363 4 SCROT (page 1968)
4364 18 SCR (page 1907)
4376 3 DEF: RCV (page 662)
4376 4 DEF: RCV (page 662)
4376 7 DEF: RCV (page 662)
4377 2 Ammonia (page 338)
4377 3 Ammonia (page 338)
4377 4 Ammonia (page 338)
4377 12 Ammonia (page 338)
4377 13 Ammonia (page 338)
4377 19 Ammonia (page 338)
4380 2 Ammonia (page 338)
4382 10 Ammonia (page 338)
4752 4 EGR (page 1074)
4765 2 DOCIT (page 830)
4765 3 DOCIT (page 830)
4765 4 DOCIT (page 830)
4765 16 DOCIT (page 830)
4766 15 DPFIT (page 876)
4766 16 DPFIT (page 876)
4792 7 SCR (page 1907)
4792 14 SCR (page 1907)
4794 31 SCR (page 1907)
4795 31 AFT (page 156)
4796 31 AFT (page 156)
5024 10 NOx (page 1827)
5031 10 NOx (page 1827)
5109 3 DCU (page 475)
Condition Description
SCRIT signal Out of Range HIGH
SCRIT signal Out of Range LOW
SCRIT above Maximum Temperature
SCROT above Critical Temperature
SCROT signal erratic, intermittent or incorrect
SCROT signal Out of Range HIGH
SCROT signal Out of Range LOW
Low NOx Conversion Detected
DEF Reverting Control Valve short to PWR
DEF Reverting Control Valve short to GND
DEF Reverting Control Valve - Mechanical system not
responding or out of adjustment
NH3 in range stuck fault
NH3 Sensor signal Out of Range HIGH
NH3 operation fault
NH3 internal chip error
NH3 operation fault
NH3 Sensor Module not detected on j1939
NH3 signal erratic, intermittent, or incorrect
NH3 sensor Heater abnormal rate of change
EGR Cooler Efficiency: EGR Outlet Temp above expected
DOCIT signal erratic, intermittent, or incorrect
DOCIT signal Out of Range HIGH
DOCIT signal Out of Range LOW
DOCIT Above Maximum Temperature
DPFIT Above Warning Temperature
DPFIT Above Maximum Temperature
SCR Catalyst System - Mechanical system not responding or
out of adjustment
SCR Temperature Module (Incorrect Part)
SCR Catalyst System Missing
DPFDP excessively LOW (sensor/circuit fault or missing DPF)
Diesel Oxidation Catalyst Missing
NOxIN Sensor Heater abnormal rate of change
NOxOUT Sensor Heater not reading correctly
DCU battery voltage above 17 volts