FUSO 4M4 – FUEL AND ENGINE CONTROL – STRUCTURE AND OPERATION – Fault diagnosis function

โ€ข The sensors and other components are continuously monitored for faults. In the event that a component is found faulty, an indication is made in the meter cluster to alert the driver, the fault location is memorized in the form of a diagnosis code, and the control during fault is initiated.
โ€ข While the control during fault is taking place, the systemโ€™s functionality is limited to ensure vehicle and driver safety. It is possible to read the memorized diagnosis code using a Multi-Use Tester or from flashing of the warning lamp.