TURBOCHARGER GP 1164120 - Caterpillar

Illustration 1 g00750050
Schematic for the action lampThis diagnostic code is recorded when the main display module reads the voltage of the circuit for the action lamp and the current is above normal. The action lamp does not light as a result of this diagnostic code. The schematic that is shown above represents a typical installation of the component. Verify the connector contact and wire numbers by using the Electrical System Schematic for the machine that is being serviced.Test Step 1. CHECK THE LAMP.
At the action lamp, disconnect wire 421-BU from the lamp socket.Expected Result:The CID 0324 FMI 06 is present. Results:
OK - The CID 0324 FMI 06 is present. The action lamp is not causing the diagnostic code. Proceed to test step 2.
NOT OK - The CID 0324 FMI 06 is NO longer present. The lamp or the lamp socket has failed. The correct resistance for a lamp is greater than 10 ohms.Repair: Replace the action lamp. Stop.Test Step 2. CHECK THE HARNESS.
Turn the disconnect switch to the OFF position.
Wire 421-BU remains disconnected from the action lamp.
Disconnect the machine harness from the main display module.
At the machine harness connector for the main display module, measure the resistance between contact 13 (421-BU) and frame ground.Expected Result:The resistance is greater than 5000 ohms.Results:
OK - The resistance is greater than 5000 ohms. The harness resistance is correct. Proceed to test step 3.
NOT OK - The resistance is less than 5000 ohms. The harness has failed.Repair: Repair the machine harness or replace the machine harness. Stop.Test Step 3. CHECK THE MAIN DISPLAY MODULE.
Remove contact 13 from the machine harness connector for the main display module.
Reconnect the harness connector to the main display module.
Turn the disconnect switch and the key start switches to the ON position.
Place the same diagnostic code on hold. Check the service code indicator.Expected Result:The CID 0324 FMI 06 is present.Results:
OK - The CID 0324 FMI 06 remains present. The main display module has failed.Repair: It is unlikely that the main display module has failed. Exit this procedure and perform this procedure again. Also, recheck if the diagnostic code indicator is illuminated for this diagnostic code. If the cause of the diagnostic code is not found, replace the main display module. See Testing and Adjusting, "Module - Replace". Stop.
NOT OK - The diagnostic code is NO longer active. The diagnostic code does not exist at this time. The initial diagnostic code was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation. Stop.