SEBU8726-03 37 Operation Section Overspeed Table 2 i04348489 Overspeed The default overspeed is set at 2800. The ECM will cut the power to the electronic unit injectors, until the rpm drops below the overspeed setting. A diagnostic fault code will be logged into the ECM memory and a warning lamp will indicate a diagnostic fault code. Some application may have a display panel in order to alert the operator. ECM Electronic Control Module RPM Revolutions Per Minute An overspeed is detected by the speed/timing sensors.
Warning Indicator Shutdown Indicator Lamp State Description of the Indication Engine Status Operator Action On On Indicator Check When the keyswitch is moved to the ON position, the lamps will illu- minate for 2 seconds and the lamps will then go off. During indicator check, the after- treatment indicators will also be checked. The keyswitch is in the ON position but the engine has not yet been cranked. If any of the indicators will not illuminate during indicator check, the fault must be investi- gated immediately. If any Indicators stay il- luminated or flash, the fault must be investi- gated immediately.
Off Off No Faults With the engine in operation, there are no active warnings, diagnostic codes, or event codes. The engine is operating with no detected faults. None Level 1 On Solid Off Warning Level 1 warning The engine is operating nor- mally but there is one or more faults with the elec- tronic management system for the engine. As soon as possible the fault should be investigated. Level 2 Flashing Off Warning Level 2 warning The engine continues to be operated, but there are active diagnostic, or event codes active. Derate to engine power may be applied. Stop the engine. Investigate the code.
Level 3 Flashing On solid Warning Level 3 warning If both the warning lamp and the shutdown lamp are in operation, this issue indicates one of the fol- lowing conditions. 1. One or more of the shutdown values for the engine protection strategy has been exceeded. 2. A serious active diagnostic code has been detected. 3. After a short time period, the en- gine may shut down. The engine continues to be operated, but the level of im- portance of the warning has increased. The engine will automatically shut down. If shut down is not enabled, the engine could be dam- aged if continued to be operated. Stop the engine immediately. Investigate the fault