Group 36 Vehicle Control Unit, Fault Tracing MID 144 PPID 74 Vehicle ECU, Power Supply MID 144 PPID 265 Vehicle Speed Sensor Supply MID 144 PPID 279 Air dryer, Dry Agent Reservoir MID 144 PPID 312 Air Dryer, Regeneration 12 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 4 • Abnormally low voltage or short circuit to lower voltage • Voltage below 4.7V • Yellow Check lamp lit • Engine will not supply requested fuel to engine • Display show minimum wet tank pressure • Signal shorted low • Faulty harness • Faulty tank air pressure sensor Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Abnormally high voltage or short circuit to higher voltage • Voltage above 9V • Yellow Check lamp lit • VSS harness shorted high • Faulty VSS FMI 4 • Abnormally low voltage or short circuit to lower voltage • Voltage below 6.5V • Yellow Check lamp lit • VSS harness shorted low • Faulty VSS Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 0 • Data valid, but above the normal working range • Air volume too high pumping through the air cartridge • Yellow Check lamp lit • Air cartridge valves may be hard to handle • Air Filter Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 0 • Data valid, but above the normal working range • Airfol w used is to high to get time to regenerate • Yellow Check lamp lit • Reduced air pump ability • Air Filter • Plain air leakage • ECS FMI 7 • Incorrect response from a mechanical system • Valve have been open for 30 seconds and the pressure is still the same • N/A • Faulty harness • Valve block stuck open • Air filter