STICK AS-BRG & 2841945 - Caterpillar

Table 1
Diagnostic Codes For Caterpillar Monitoring System (MID 030)(1)
CID/FMI Description
CID 0248 - Data Link:
FMI 02 Data erratic, intermittent, or incorrect
CID 0271 - Alarm (Action):
FMI 03 Signal voltage above normal or short to +battery
FMI 05 Current below normal or open circuit
FMI 06 Current above normal or short to ground
CID 0324 - Lamp (Action):
FMI 03 Signal voltage above normal or short to +battery
FMI 05 Current below normal or open circuit
FMI 06 Current above normal or short to ground
CID 0819 - Display Data Link:
FMI 02 Data erratic, intermittent, or incorrect
CID 0821 - Display Power Supply:
FMI 03 Signal voltage above normal or short to +battery
FMI 04 Voltage below normal or short to ground
(1) This table pertains only to faults with a MID of 030.Note: Every machine may not have all of the diagnostic codes that are listed in the preceding table. Also, every machine may not have all the FMI for a given CID.Note: The preceding table shows the diagnostic codes for the Caterpillar Monitoring System. When the Caterpillar Monitoring System is in the service mode, diagnostic codes from the other electronic control modules are shown on the display area of the Caterpillar Monitoring System. The information from the diagnostic code is transferred from other electronic control modules via the CAT Data Link to the main display module. This diagnostic information is shown when the main display module is in the service mode. The module identifier (MID) indicates the electronic control module that is sending the diagnostic code. The MID for the Caterpillar Monitoring System is "030". This Service Manual is used for diagnostic codes with a MID of "030". The MID of other electronic control modules on a particular machine are listed on the Electrical System Schematic. Troubleshooting information for those diagnostic codes can be found in the service manual for that system.Note: When a sensor fault is present, the corresponding warning for that sensor is also activated for the operator. For example, if the signal wire for the engine coolant temperature sensor is shorted to +battery, then the following actions take place:
The corresponding diagnostic code is stored in memory.
The gauge for the engine coolant temperature is indicating in the warning region.
The action lamp is FLASHING.Notice that the second and third above items are the same warning indications that are activated if the engine overheats.