GENERAL AR 3541451 - Caterpillar

Illustration 1 g00682494
Schematic of the VIMS service indicator lamp
This diagnostic code is recorded when the VIMS electronic control module reads the current of the service indicator lamp circuit (wire E709-WH(White)) and the current is below normal. System Response:The service indicator lamp is ON CONTINUOUSLY when this failure is present. Test Step 1. CHECK THE SERVICE INDICATOR LAMP.
Turn the disconnect switch and the key start switch to the OFF position.
Disconnect the machine harness connector from the connector of the service indicator lamp.
Turn the disconnect switch and the key start switch to the ON position. Expected Result:The diagnostic code changed from CID 0823 FMI 06 to CID 0823 FMI 05.Results:
OK - Verify that the diagnostic code changed from CID 0823 FMI 06 to CID 0823 FMI 05. The lamp or the lamp socket is shorted to ground. Repair: Replace the lamp or the lamp socket.STOP
NOT OK - The diagnostic code CID 0823 FMI 06 is still active. The action lamp is not causing the fault. Proceed to test step 2.Test Step 2. CHECK THE SIGNAL CIRCUIT IN THE MACHINE HARNESS
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect machine harness connector J1 from the VIMS ECM.
The connector of the service indicator lamp remains disconnected from the machine harness connector.
Measure the resistance between contact J1-58 (wire E709-WH(White)) and frame ground. Expected Result:The resistance is greater than 5000 ohms.Results:
OK - The resistance is greater than 5000 ohms. The signal circuit is correct. Proceed to test step 3.
NOT OK - The resistance is less than 5 ohms. The signal circuit is shorted to ground.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE RETURN CIRCUIT IN THE MACHINE HARNESS
The key start switch and the disconnect switch remain in the OFF position.
Machine harness connector J1 remains disconnected from the VIMS ECM.
The connector of the service indicator lamp remains disconnected from the machine harness connector.
Measure the resistance between contact J1-59 (wire J848-BU(Blue)) and frame ground. Expected Result:The resistance is greater than 5000 ohms.Results:
OK - The resistance is greater than 5000 ohms. The return circuit is correct. The VIMS ECM has failed.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the fault is not found, replace the ECM. Refer to the Testing and Adjusting, "Module - Replace".STOP
NOT OK - The resistance is less than 5 ohms. The return circuit is shorted to ground.Repair: Repair the machine harness or replace the machine harness.STOP