SEBU8598 15 Safety Section Engine Electronics Grounding Practices The Engine Monitoring package can vary for different engine models and different engine applications. However, the monitoring system and the engine monitoring control will be similar for all engines. Proper grounding for the engine electrical system is necessary for optimum engine performance and reliability. Improper grounding will result in uncontrolled electrical circuit paths and in unreliable electrical circuit paths. Note: Many of the engine control systems and display modules that are available for Caterpillar Engines will work in unison with the Engine Monitoring System.
Together, the two controls will provide the engine monitoring function for the specific engine application. Refer to the Troubleshooting Manual for more information. Uncontrolled electrical circuit paths can result in damage to main bearings, to crankshaft bearing journal surfaces, and to aluminum components. Engines that are installed without engine-to-frame ground straps can be damaged by electrical discharge. To ensure that the engine and the engine electrical systems function properly, an engine-to-frame ground strap with a direct path to the battery must be used.
This path may be provided by way of a starting motor ground, a starting motor ground to the frame, or a direct engine ground to the frame. All grounds should be tight and free of corrosion. The engine alternator must be grounded to the negative - battery terminal with a wire that is adequate to handle the full charging current of the alternator. i04021529 Engine Electronics SMCS Code: 1000; 1900 Tampering with the electronic system installation or the OEM wiring installation can be dangerous and could result in personal injury or death and/or engine damage. The Electronic Control Module (ECM) provides a comprehensive, programmable engine monitoring system for this engine.
The ECM monitors specific engine operating parameters in order to detect abnormal conditions that may develop. The ECM will generate an event code if a specific engine parameter exceeds an acceptable range that is defined by the engine monitoring system. The ECM will react with an action that is dependent on the severity of the condition. For information on event codes, refer to this Operation and Maintenance Manual, “Event Codes” topic (Operation Section) The following actions may be initiated by the ECM. These actions are dependent on the severity of the condition: Illumination of a warning lamp or warning alarm Engine derate Engine protection shutdown