PUMP GP-GEAR 3031420 - Caterpillar

Illustration 1 g02561356
Connections of the main power relay
This diagnostic code is associated with the main power relay. The FMI 06 diagnostic code means that the ECM has determined that the current of the relay is above normal.The possible causes of this diagnostic code are listed below:
The energize circuit of the relay is shorted to ground.
The relay has failed.
The ECM has failed. An ECM failure is unlikely.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 3467 FMI 06 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.Test Step 1. 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 2-pin connector from the relay. Expected Result:The FMI 06 diagnostic code changes to an FMI 05 diagnostic code when the relay is disconnected.Results:
YES - The FMI 06 diagnostic code changes to an FMI 05 diagnostic code when the relay is disconnected. The circuit is correct.Repair: The relay has failed. Replace the relay.STOP
NO - The FMI 06 diagnostic code remains active. Proceed to Test Step 2.Test Step 2. CHECK THE CIRCUIT OF THE RELAY FOR A SHORT TO GROUNDThe relay remains disconnected from the machine harness.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors from the ECM.
At the machine harness connector for the ECM, measure the resistance from the contact J2-2 wire (308-YL(Yellow)) 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:
YES - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 3.
NO - Each resistance measurement is not greater than 5000 ohms.Repair: There is a short in the machine harness. The short is between J2-2 wire (308-YL(Yellow)) and the circuit with the low resistance measurement. For information on testing for short circuits and finding short circuits, refer to Troubleshooting, "Wiring Harness (Short Circuit) - Test". Repair the machine harness or replace the machine harness. Refer to STOPTest Step 3. CHECK THE STATUS OF THE DIAGNOSTIC CODE
Inspect the harness connectors. Clean the contacts of the harness connectors. Check the wires for damage to the insulation caused by excessive heat, battery acid, 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 to ensure that the connectors are fully seated. Also, make sure that the clips for each connector are fastened securely.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Determine if the CID 3467 FMI 06 diagnostic code is active. Expected Result:The CID 3467 FMI 06 diagnostic code is not active.Results:
YES - The CID 3467 FMI 06 diagnostic code is not active. The problem