Group 36 Vehicle Control Unit, Fault Tracing MID 144 PPID 430 Air Dryer, Regeneration MID 144 SID 230 Idle Validation Switch 1 MID 144 SID 231 SAE J1939 Data Link MID 144 SID 240 Program Memory MID 144 SID 243 Cruise Control Set Switch 13 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 too high to get time to regenerate • Yellow Check lamp lit • Reduced air pump ability • Air suspension regulates too much • Air leak • Air Filter Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 7 • Incorrect response from a mechanical system • Faulty readout from IVS1 • Yellow Check lamp lit • Engine will not supply requested fuel to engine • Idle Validation Switch (IVS) • IVS connector • IVS harness Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 2 • Intermittent or incorrect data • VECU doesn’t get acknowledge on sent messages • Yellow Check lamp lit • CAN communication • SAE J1939 data link down/shorted Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause:
FMI 2 • Intermittent or incorrect data • Check sum calculated at startup differs from the stored one • Yellow Check lamp lit • ECU keeps resetting • Vehicle not drivable • Software error • Faulty flash hardware • VECU Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 7 • Incorrect response from a mechanical system • Signals SET+ and SET- received at the same time • Yellow Check lamp lit • Cruise control deactivated • Faulty harness • Connector