804278T Mercury RECTIFIER/REGULATOR

Cat Data Link
The Cat Data Link is used by the engine ECM to communicate with Caterpillar controllers or Caterpillar display modules. Caterpillar Electronic Technician (ET) is a software program that is designed to run on a personal computer. Cat ET can be used by the service technician to view information about an event code that is generated by the engine ECM. The following term describes the elements of the event code:Event Code - The "E" identifies the code as an event code. The "XXX(X)" represents a numeric identifier for the event code. The fourth "(X)" assigns one of three levels to the active event code according to the severity of the abnormal system condition. The warning category indicator is followed by a description of the code. Refer to the following example:
E360(1) Low Engine Oil Pressure
E360(2) Low Engine Oil Pressure
E360(3) Low Engine Oil PressureThree possible responses may be available for each parameter. Some of the responses are not available for some of the parameters. Refer to Table 1.
Table 1
Indicators (1), (2), and (3)
Warning Category Indicator Severity
(1) Least Severe
(2) Moderate Severity
(3) Most Severe The definition for the levels of severity for an event are defined below:Level (1) - Level (1) requires no immediate action. The system may need attention soon. Check on the condition or service the system at the earliest possible time.Level (2) - Level (2) requires a change in the operation of the engine or the performance of a maintenance procedure. Failure to correct the problem may result in damage to the engine components.Level (3) - Level (3) requires an immediate safe shutdown of the engine to avoid damage to the engine or injury to personnel around the engine. The problem that caused the event must be corrected before engine operation can resume.CAN Data Link
The CAN data link is used by the engine ECM to communicate with aftermarket controllers or display modules. The CAN data link is referred to as the J1939 data link. When a diagnostic code is activated, the ECM can transmit information about the code over the J1939 data link to aftermarket controllers. The code will be displayed as a two-element code. The following terms describe the elements of the code:SPN - The SPN is a numerical code which is assigned to each component to identify data via the data link to the ECM.FMI - The FMI is a numerical code that indicates the type of failure.Cross-Reference Information for Codes
Table 3 is a list of the codes for the engine. The codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code. Codes are generated when abnormal operating conditions exist. A further explanation of codes and the engine monitoring system are described after Table 3.Event Code to SPN-FMI Code to the Appropriate Symptom Procedure
Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.
Table 2
Cross-Reference from Event Code to SPN-FMI Code to the Appropriate Symptom Procedure
Event Code SPN-FMI Code Symptom Procedure
E096(1) High Fuel Pressure 94-15 Engine Fuel Delivery Pressure : High - least severe (1) Troubleshooting, "Fuel Pressure Is High"
E096(2) High Fuel Pressure 94-16 Engine Fuel Delivery Pressure : High - moderate severity (2)
E096(3) High Fuel Pressure 94-0 Engine Fuel Delivery Pressure : High - most severe (3)
E097(1) Engine Derate Overridden 971-31 Engine Derate Switch The monitoring system override switch has been activated.
Engine derates are prevented when this event is active.
E099(1) Engine Oil Filter Restriction Warning 99-16 Engine Oil Filter Differential Pressure : High - least severe (1) Troubleshooting, "Oil Filter Differential Pressure Problem"
E099(2) Engine Oil Filter Restriction Warning 99-17 Engine Oil Filter Differential Pressure : High - moderate severity (2)
E099(3) Engine Oil Filter Restriction Warning 99-18 Engine Oil Filter Differential Pressure : High - most severe (3)
E101(1) High Crankcase Pressure Warning 101-15 Engine Crankcase Pressure : High - least severe (1) Troubleshooting, "Crankcase Pressure Is High"
E101(2) High Crankcase Pressure Warning 101-16 Engine Crankcase Pressure : High - moderate severity (2)
E101(3) High Crankcase Pressure Warning 101-17 Engine Crankcase Pressure : High - most severe (3)
E197(1) High Engine Oil Temperature 175-15 Engine Oil Temperature 1 : High - least severe (1) Troubleshooting, "Oil Temperature Is High"
E197(2) High Engine Oil Temperature 175-16 Engine Oil Temperature 1 : High - moderate severity (2)
E197(3) High Engine Oil Temperature 175-0 Engine Oil Temperature 1 : High - most severe (3)
E198(1) Low Fuel Pressure 94-17 Engine Fuel Delivery Pressure : Low - least severe (1) Troubleshooting, "Fuel Pressure Is Low"
E198(2) Low Fuel Pressure 94-18 Engine Fuel Delivery Pressure : Low - moderate severity (2)
E198(3) Low Fuel Pressure 94-19 Engine Fuel Delivery Pressure : Low - most severe (3)
E199(1) Low Coolant Temperature 110-17 Engine Coolant Temperature : Low - least severe (1) Troubleshooting, "Coolant Temperature Is Low"
E199(2) Low Coolant Temperature 110-18 Engine Coolant Temperature : Low - moderate severity (2)
E199(3) Low Coolant Temperature 110-19 Engine Coolant Temperature : Low - most severe (3)
E225(3) Engine Overcrank 1664-31 Engine Automatic Start Failed The number of crank cycles has exceeded one of the following programmable parameters:
"Starting System #1 Maximum Number of Crank Cycles"
"Starting System #2