Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 3363, Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater MID 128 PSID 75 ECM SPN 3471, Aftertreatment Fuel Pressure Control Actuator/ MP8 Engine– MID 128 PPID 328 61 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 2 • Data erratic, intermittent or incorrect • Commanded valve position is not plausible • N/A • Faulty harness or connectors • Aftertreatment DEF tank temperature sensor • Aftertreatment DEF tank heating valve FMI 3 • Voltage above normal, or shorted to high source • Circuit shorted + • N/A • Aftertreatment DEF pump assembly FMI 4 • Voltage below normal, or shorted to low source • Circuit shorted – • Open circuit • N/A • Aftertreatment DEF pump assembly FMI 5 • Current below normal or open circuit • Open circuit • N/A • Aftertreatment DEF pump assembly Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Voltage above normal, or shorted to high source • Circuit shorted to battery • MIL illuminated • Yellow electronic malfunction lamp illuminated • Aborted regeneration • Faulty harness • Actuator failure FMI 4 • Voltage below normal, or shorted to low source • Circuit shorted to ground • MIL illuminated • Yellow electronic malfunction lamp illuminated • Aborted regeneration • Faulty harness • Actuator failure FMI 5 • Current below normal or open circuit • Open circuit • MIL illuminated • Yellow electronic malfunction lamp illuminated • Aborted regeneration • Faulty harness • Actuator failure