PLATE 3734076 - Caterpillar

Warning Strategy
Elevated idle for Aftertreatment - Continuous low load operation may lead to the elevation of engine low idle speed to 1200 revolutions per minute (RPM). The elevation of engine low idle speed is part of the aftertreatment management.The engine will only elevate low idle when required and safety interlocks are in place. The engine can continue to be operated as normal. Operating the engine for longer periods at higher load will reduce the use of this elevated idle mode.The Electronic Control Module (ECM) will be enabled with a world-wide warning strategy.Warning Indicators
The warning indicators consist of a level gauge for the DEF, a low-level lamp for the DEF, an emission malfunction lamp, and the application stop lamp.The DEF level gauge will only give an accurate reading with the application on level ground.
Illustration 1 g06065099
DEF Level gauge
Illustration 2 g02852336
Emission malfunction lamp
Warning Levels
The SCR has three levels of warning. Depending on the fault that has been detected and software enabled will govern the time that the system will stay at each warning level.Any warning should be investigated immediately, contact your Cat dealer. The system is equipped with an override option. Once the override option has been used and the fault still exist, the engine will be locked in de-rate or shutdown mode.World-Wide SCR Warnings
At Level 1, the emission malfunction lamp will be on solid.
At Level 2, the emission malfunction lamp will flash.
At Level 3, the emission malfunction lamp will flash and the stop lamp will activate.
At Level 3, the engine may shut down or operate at 1000 Revolutions Per Minute (RPM).
At Level 3 cycling the keyswitch will give 20 minutes override at full power, before the shutdown or idle is triggered. The emission malfunction lamp will continue to flash .If installed, an audible warning will sound.
Table 1
World-Wide
DEF Quality Tampering and Dosing Interruption
- Normal operation Level 1 Level 2 Level 3 Override
Inducement Time
First occurrence None 2.5 Hours 70 minutes Shut down or idle
Until fault heals Cycling the keyswitch will give 20 minutes of full power
The system must be fault free for 40 hours before the system will reset to zero. If the fault is intermittent, and returns within