TURBOCHARGER GP 3715747 - Caterpillar

Motor and Generator ECMs
The following is a list of Diagnostic Trouble Codes (DTCs) associated with the Internal Power Supply of the machine.
Table 1
Motor and Generator ECMs
DTC Code Description System Response
2800-3 Power Inverter 1 ECM Power Supply Output 3: Voltage Above Normal The Power Train will be disabled. A Level 2 fault and an EID 2169 will be active.
2800-4 Power Inverter 1 ECM Power Supply Output 3: Voltage Below Normal The Power Train will be disabled. A Level 2 fault and an EID 2169 will be active. The CID 2800 diagnostic code that is activated by the Power Inverter Control ECMs is associated with the ECM Internal Power Supply. There is no procedure for checking the voltage of this Internal Power Supply. The ECM will activate CID 2800 diagnostic code when the internal voltage of the power supply is above normal.Possible causes for an FMI 3 diagnostic code are:
The ECM has failed. ECM failure is unlikely.Possible causes for an FMI 4 diagnostic code are:
The ECM has failed. ECM failure is unlikely.Diagnostic Trouble Code Procedure
When an area containing hazardous voltage components must be entered for service, the "Safe Shutdown Procedure for Electric Drive Wheel Loaders" must be performed before any enclosures containing hazardous voltage components are opened or any hazardous voltage connectors are disconnected. Refer to the Troubleshooting, "Electrical Maintenance Guidelines" section of this manual. Perform the "Safe Shutdown Procedure for Electric Drive Wheel Loaders" before any hazardous voltage areas are opened or before hazardous voltage connectors are disconnected.Note: Prior to beginning this procedure, inspect the harness connectors involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. If a problem with a connection is found, correct the problem and verify that the DTC is active before performing a troubleshooting procedure.
Identify the active FMI code associated with the components.
Determine which code is present and use the list below to determine which procedure to follow.
FMI 3 DTC, proceed to Table 2.
FMI 4 DTC code, proceed to Table 3.
Table 2
FMI 3 Troubleshooting
Troubleshooting Test Steps Values Results
1. Flash The Latest Software To The ECM
The software program for the ECM causing this problem is unlikely. However, flash the latest version of ECM software to the ECM to eliminate this condition as a possible cause.
A. To flash the latest software to the ECM, refer to the Troubleshooting, "ECM Software - Install" procedure in this manual.
After completing the flash program procedure, return to this procedure and continue to the next step.
B. After the latest version of ECM software has been flashed to the ECM, turn the key switch to the OFF position.
C. Start the engine. Run the engine at low idle.
D. Determine if the DTC is active.
The FMI 3 diagnostic code is not active. No new DTCs or Event Codes have been activated. OK: The FMI 3 diagnostic code is not active. No new DTCs or Event Codes have been activated.
REPAIR: The latest software