HOSE AS 3002423 - Caterpillar

Illustration 1 g00658601
Schematic of the Action lampThis diagnostic code is recorded when the ECM reads the current of the "action lamp circuit "(411-PK) and the current is below normal. System Response:The action lamp does not light when this diagnostic code is active.Test Step 1. CHECK THE LAMP.
At the action lamp, use a jumper wire to connect wire 411-PK to frame ground. Expected Result:The diagnostic code CID 0374 FMI 05 changed to CID 0374 FMI 06. Results:
OK - The diagnostic code CID 0374 FMI 05 changed to CID 0374 FMI 06.Repair: The lamp or the lamp socket are open. Replace the action lamp. Verify that the action lamp is open. The correct resistance for a good lamp is less than 50 ohms. Stop.
NOT OK - The diagnostic code CID 0374 FMI 05 is still active. The action lamp is not causing the fault. Proceed to test step 2.Test Step 2. CHECK THE HARNESS.
The disconnect switch and the key start switch remain in the OFF position.
Disconnect wire 411-PK from the socket of the action lamp.
Disconnect the machine harness connector J1 from the ECM.
At the machine harness, measure the resistance between connector contact J1-58 (wire 411-PK) and wire 411-PK of the lamp socket.
At the machine harness, measure the resistance between wire 201-BK of the lamp socket and frame ground.Expected Result:The resistance is less than 5 ohms.Results:
OK - Resistance is less than 5 ohms. The machine harness is correct. Repair: The failure is intermittent. The probable cause is a poor electrical connection at the harness connectors or a damaged harness. Check the harness for damage and clean the harness connectors. If the harness has not failed, the ECM has failed. 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. See the Testing and Adjusting, "Module - Replace". Stop.
NOT OK - Resistance is greater than 5 ohms.Repair: The machine harness is not correct. Repair the machine harness or replace the machine harness. Stop.