BLOCK 0845205 - Caterpillar

Note: Table 1 refers to the service codes for the power train ECM only. When the Caterpillar Monitoring System is in service mode, the service codes for the power train ECM are shown on the display area of the Caterpillar Monitoring System. The information of the service code for the power train ECM is transferred via the CAT Data Link to the Caterpillar Monitoring System. This diagnostic information is shown when the Caterpillar Monitoring System is in the service mode. The module identifier (MID) tells the service person the ECM that is sending the service code. The MID for the power train ECM is 081. The information in table 1 refers to service codes with a MID of 081. The MID of other electronic control modules or components on a particular machine are listed on the electrical system schematic. Troubleshooting information for the service codes with a MID that is not 081 can be found in the service manual for that system.Use the Caterpillar Monitoring System or the Caterpillar Electronic Technician (ET) in order to determine the diagnostic codes for the power train electronic control module (ECM). After determining the diagnostic codes, refer to the corresponding test procedure for more information. Perform the procedure that corresponds to the Component Identifier (CID) and the Failure Mode Identifier (FMI) of the diagnostic code. The following table is a list of possible diagnostic codes for the power train ECM. The following Table 2 is a description of the failure mode identifier (FMI) codes.
Table 2
FMI No.    Description    
0     Data valid but above normal operational range    
1     Data valid but below normal operational range    
2     Data erratic, intermittent, or incorrect    
3     Voltage above normal or shorted high    
4     Voltage below normal or shorted low    
5     Current below normal or open circuit    
6     Current above normal or grounded circuit    
7     Mechanical system not responding properly    
8     Abnormal frequency, pulse width, or period    
9     Abnormal update    
10     Abnormal rate of change    
11     Failure mode not identifiable    
12     Bad device or component    
13     Out of calibration    FMI 00 - Data valid but above normal operational rangeEvery electronic control system sets a high limit for the expected operating range of a signal. The limit