TUBE ASSY. 7X3583 - Caterpillar

Which Generate This Code:Note: Ensure that the fault is active.This diagnostic code is recorded when the ECM identifies a system voltage that is above 32.5 DCV.This fault should only be an active fault when the engine is running. If this fault occurs, the charging system is charging at an excessive voltage. Test Step 1. CHECK THE CHARGING SYSTEM
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine. Expected Result:The diagnostic code is no longer active.Results:
YES - The diagnostic code is no longer active. Proceed to test step 2.
NO - The diagnostic code remains active. Proceed to test step 3.Test Step 2. CHECK THE CHARGING SYSTEM AGAIN
Start the engine.
Clear CID 168 FMI 00.
View the results of the diagnostic code.Expected Result:The diagnostic code is no longer active.Results:
YES - The diagnostic code is no longer active. Watch for a recurrence. Stop.
NO - The diagnostic code is active. The charging system is charging at an excessive voltage. Repair: Check the charging system. See Special Instruction, REHS0354, "Charging System Troubleshooting" for more information. Stop.Test Step 3. CHECK THE BATTERY VOLTAGE
The engine should not be running.
At the battery, measure the voltage of the battery.Expected Result:The voltage should measure less than 32.5 VDC. Results:
YES - The voltage measures less than 32.5 DCV. The ECM must be recording this diagnostic code incorrectly.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace". Stop.
NO - The voltage measurement is greater than 32.5 VDC. The charging system is charging at an excessive voltage.Repair: Check the charging system. Stop.