Group 36 Vehicle Control Unit, Fault Tracing MID 144 PSID 23 Air Dryer, Regenerating MID 144 PSID 24 Compressor, Control MID 144 PSID 25 Air Leakage MID 144 PSID 200 Communication Interference, Data Link, Engine Control Module (ECM) 16 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 3 • Abnormally high voltage or short circuit to higher voltage • Voltage too high • Yellow Check lamp lit • Signal shorted low • Faulty valve FMI 4 • Abnormally low voltage or short circuit to lower voltage • Voltage below 2.3V • Yellow Check lamp lit • Signal shorted high • Faulty valve Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Abnormally high voltage or short circuit to higher voltage • Voltage too high • Yellow Check lamp lit • Signal shorted low • Faulty valve FMI 4 • Abnormally low voltage or short circuit to lower voltage • Voltage below 2.3V • Yellow Check lamp lit • Signal shorted high • Faulty valve Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 14 • Data valid, but below the normal working range • AIrflow too high (at velocity above 50km/h) • Small Leakage - Info lamp lit • Large Leakage - Service lamp lit • Air leakage Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 9 • Abnormal update rate • Expected EMS message/s not received • Yellow Check lamp lit • CAN1 Communication Down • SAE J1939 data link Down/Shorted