Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) Aftertreatment DEF tank heating valve failure Aftertreatment Control Module (ACM) ECM SPN 3675, Engine Turbocharger Compressor Bypass Valve Position MID 128 PPID 330 75 FMI 4 • Voltage below normal, or shorted to low source • Circuit shorted – • MIL illuminated • Faulty harness • Faulty connector • Aftertreatment DEF line heater 1 or 3 failure • Aftertreatment DEF pump assembly failure • Aftertreatment DEF tank heating valve failure • Aftertreatment Control Module (ACM) FMI 5 • Current below normal or open circuit • Open circuit • MIL illuminated • Faulty harness • Faulty connector • Aftertreatment DEF line heater 1 or 3 failure • Aftertreatment DEF pump assembly failure Type of fault:
FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Voltage above normal, or shorted to high source • Circuit shorted + • On/off valve can’t be activated • MIL illuminated • Yellow electronic malfunction lamp illuminated • Regeneration not possible • High engine braking without request • Driveability affected • Faulty bypass valve solenoid • Faulty harness • Faulty harness connector FMI 4 • Voltage below normal, or shorted to low source • Short circuit - • Valve constantly activated • MIL illuminated • Yellow electronic malfunction lamp illuminated • Major engine derate • Exhaust manifold overheating • Engine shut down • Faulty bypass valve solenoid • Faulty harness • Faulty harness connector