Group 36 Vehicle Control Unit, Fault Tracing MID 144 PPID 72 Accelerator Pedal and Engine Brake, Sensors Supply MID 144 PPID 73 Second Accelerator Pedal, Supply Sensors 11 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 3 • Abnormally high voltage or short circuit to higher voltage • Voltage above 5.7V • Yellow Check lamp lit • Requested fuel not supplied to engine • Engine brake retarder is disabled • Accelerator pedal position sensor harness shorted high • Accelerator pedal position sensor FMI 4 • Abnormally low voltage or short circuit to lower voltage • Voltage below 4.7V • Yellow Check lamp lit • Requested fuel not supplied to engine • Engine brake retarder is disabled • Accelerator pedal position sensor harness shorted low • Accelerator pedal position 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 5.3V • Yellow Check lamp lit • Engine will not supply requested fuel to engine • Display show minimum wet tank pressure • Signal shorted to high • Faulty harness • Faulty tank air pressure sensor 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