VALVE, CONTROL 62000695 - Caterpillar

Illustration 1 g00897927
Schematic of the Relay (Boom Float)This diagnostic code is associated with the relay (boom float). The FMI 06 means that the ECM has determined that the current of the relay is above normal. The possible causes of this diagnostic code are listed:
The signal circuit of the relay is shorted to ground.
The relay has failed.
The ECM has failed. This is unlikely. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 0559 FMI 06 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The diagnostic code of CID 0559 FMI 06 will be logged in the internal memory of the ECM.Test Step 1. CHECK FOR RELATED DIAGNOSTIC CODES.Note: The mode selector switch must be located in the float position.
Use the Electronic Technician in order to verify that diagnostic codes for the mode select switch are not present. The codes that may be present are listed:
CID 1799 FMI 03
CID 1799 FMI 06Expected Result:Diagnostic codes for the mode select switch are not present.Results:
OK - Diagnostic codes for the mode select switch are not present. Proceed to Test Step 2.
NOT OK - Diagnostic codes for the mode select switch are present.Repair: Proceed to the diagnostic code procedure for the mode selector switch and perform the procedure. Stop.Test Step 2. CHECK THE RELAY.
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Observe the status of the diagnostic code.
Disconnect the relay with the active diagnostic code from the machine harness. Expected Result:CID 0559 FMI 06 changes to CID 0559 FMI 05 when the relay is disconnected.Results:
YES - CID 0559 FMI 06 changes to CID 0559 FMI 05 when the relay is disconnected. The circuit is correct.Repair: The relay has failed. Repeat this test "CHECK THE RELAY" in order to verify the failure of the relay. Replace the relay. Stop.
NO - CID 0559 FMI 06 remains active. Proceed to Test Step 3.Test Step 3. CHECK THE SIGNAL CIRCUIT OF THE RELAY FOR A SHORT TO GROUND.
Turn the key start switch and the disconnect switch to the OFF position.
The relay remains disconnected from the machine harness.
Disconnect the machine harness connector(s) from the ECM.
At the machine harness connector, measure the resistance from the signal contact J1-18 (wire T969-YL) to all contacts that are used in the machine harness connectors for the ECM. Expected Result:Each resistance measurement is greater than 5000 ohms.Results:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 4.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between the circuit with the low resistance measurement and in wire T969-YL or wire G886-YL.Repair: Repair the machine harness or replace the machine harness. Stop.Test Step 4. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect