COVER-FUEL 1P8051 - Caterpillar

Illustration 1 g01320858
Connections of the clutch relayThis diagnostic code is associated with the relay. The FMI 06 means that the ECM has determined that there is a short to ground in the relay circuit.The possible causes of this diagnostic code are listed:
The energize 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 2671 FMI 06 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.System Response:The A/C is engaged when the switch for the A/C is in the OFF position.Test Step 1. CHECK THE ENERGIZE CIRCUIT OF THE RELAY FOR A SHORT TO GROUND.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the relay 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 J2-12 (wire C510-WH) to all contacts that are used in the machine harness connectors for the ECM and frame ground. 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 2.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-12 (wire C510-WH) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK THE RELAY.
The disconnect switch and the key start switch remain in the OFF position.
Disconnect the relay from the machine harness.
At the harness connector for the relay, insert a multimeter probe in contact 5 and contact 2.
Measure the resistance of the relay coil.Expected Result:The resistance of the coil is between 288 ohms and 396 ohms.Results:
OK - The resistance is between 288 and 396 ohms. Proceed to Test Step 3.
NOT OK - The resistance is not between 288 and 396 ohms. The relay has failed.Repair: Replace the relay.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the harness connectors. Clean the contacts of the harness connectors and check the wires for damage to the insulation that is caused by excessive heat, corrosion, or chafing.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit.
Reconnect all harness connectors in order to make sure that the connectors are fully seated. Also, make sure that the clips for each connector are completely fastened.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 2671 FMI 06. Expected Result:The CID 2671 FMI 06 is active. Results:
YES - The CID 2671 FMI 06 is active. The diagnostic code has not been corrected.Repair: Check the circuit again. If the Caterpillar Electronic Technician (Cat ET) is available, use