HOSE AS 2411735 - Caterpillar

Illustration 1 g01470717
Schematic for the Seat SwitchThe Seat Switch has two inputs to the ECM. The two inputs are normally open and normally closed. During normal operation, one of the inputs is open. The other input is grounded. When a circuit is measured with a voltmeter, an open circuit will measure approximately 13 DCV to ground and a closed circuit will measure approximately 0 DCV to ground. An FMI 04 diagnostic code is recorded when both of the inputs are grounded.The possible causes of this diagnostic code are listed below:
The "normally open" signal circuit (wire U766-BR) is always shorted to ground.
The "normally closed" signal circuit (wire U767-BU) is always shorted to ground.
The switch has failed.
The ECM has failed. This is unlikely. Before performing this procedure, inspect the harness connectors that are involved in the 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 this diagnostic code is active before performing this procedure.
Table 1
Status of the Switch    
MODE    Switch Position    J2-44 (N/O)
U766-BR Circuit    J2-45 (N/C)
U767-BU Circuit    
Released     Up     Open     Closed    
Pressed     Down     Closed     Open    System Response:A level 2 warning is generated.Test Step 1. CHECK THE SWITCH
Turn the disconnect switch and the key start switch to the ON position. DO NOT START THE ENGINE.
Ensure that the diagnostic code is active.
Observe the status of the diagnostic code while disconnecting the switch connector from the machine harness.Expected Result:The CID 2113 FMI 04 diagnostic code will remain active if the switch is not the cause of the diagnostic code. The switch is the cause of the diagnostic code if the CID 2113 FMI 04 diagnostic code is NO longer active and a CID 2113 FMI 03 diagnostic code becomes active.Results:
OK - The CID 2113 FMI 04 diagnostic code remains active. The switch has not failed. Proceed to Test Step 2.
NOT OK - The CID 2113 FMI 04 diagnostic code is NO longer active. A CID 2113 FMI 03 diagnostic code becomes active when the switch connector is disconnected. The machine harness and the ECM are operating correctly. The switch has failed.Repair: Replace the Operator Present Switch. After replacement of the switch, verify that the operation of the new switch is correct before operating the machine. STOPTest Step 2. CHECK THE HARNESS FOR A SHORTThe switch remains disconnected from the machine harness.
Disconnect the machine harness connectors J1 and J2 from the Machine ECM.
At the ECM machine harness connector J2, measure the resistance between contact J2-44 (wire U766-BR) to frame ground. Measure the resistance between contact J2-45 (wire U766-BR) to all of the other contacts that are used in the J1 and J2 connectors for the ECM.
At the ECM machine harness connector J2, measure the resistance between contact