Mack Trucks — Mack Trucks Service Manual ECM DTC Guide 2010 Emissions MRU

Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) ECM SPN 153, Engine High Resolution Crankcase Pressure MID 128 PID 153/PSID 23 22 FMI 14 • Special instructions • Sensor out of range • Sensor indicates a invalid value • Coolant level can not be detected • Yellow electronic malfunction lamp illuminated • Faulty harness • Faulty harness connector • Faulty level sensor FMI 18 • Data valid but below normal operating range - Moderately severe level • Sensor out of range • Sensor indicates a invalid value • Coolant level can not be detected • Yellow electronic malfunction lamp illuminated • Faulty harness • Faulty harness connector • Faulty level sensor Type of fault:

FMI Description: Fault Condition: Possible Symptoms: Possible Cause:

FMI 0 • Data valid but above normal operational range - Most severe level • Out of range, max voltage, illegal • Critically Above Range • Red engine shutdown lamp illuminated • Forced idle • Engine shut down • Piston ring blow-by FMI 2 • Data erratic, intermittent or incorrect • Crankcase pressure indication to high or to low a value • MIL illuminated • Faulty Crank Case Pressure senor • Faulty harness FMI 3 • Voltage above normal or shorted to high source • Short Circuit +, Measuring line • Open Circuit, Ground line • MIL illuminated • Yellow electronic malfunction lamp illuminated • Faulty Crank Case Pressure senor • Faulty harness FMI 5 • Current below normal or open circuit • Open Circuit +, 5V Supply Line • Short Circuit -, measuring line • Open Circuit, measuring line • MIL illuminated • Yellow electronic malfunction lamp illuminated • Faulty Crank Case Pressure senor • Faulty harness FMI 7 • Mechanical system not responding or out of adjustment • Leakage detected in the crankcase ventilation system • MIL illuminated • Faulty separator, hoses or pipes FMI 13 • Out of Calibration • Sensor out of range • Sensor indicates a invalid value • MIL illuminated • Faulty Sensor