LINK AS-TRACK 7T4651 - Caterpillar

Illustration 1 g01428389
Schematic of the start relay magnetic switch
This diagnostic code is associated with the start relay magnetic switch. 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 energize circuit of the relay is shorted to ground
The relay has failed
The ECM may have failed, but is unlikelyNote: 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 0444 FMI 06 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code is active, the ECM will turn off the current to the failed relay.Test Step 1. CHECK THE RELAY AND THE SUPPRESSOR HARNESS
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 and suppressor harness from the machine harness. Expected Result:CID 0444 FMI 06 changes to CID 0444 FMI 05 when the relay and suppressor harness are disconnected.Results:
YES - CID 0444 FMI 06 changes to CID 0444 FMI 05 when the relay and suppressor harness are disconnected. The circuit is correct.Repair: The relay or suppressor harness has failed. Replace the relay or suppressor harness. Verify that the new relay or suppressor harness corrects the problem.STOP
NO - CID 0444 FMI 06 remains active. Proceed to Test Step 2.Test Step 2. 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.
The relay and suppressor harness remain disconnected from the machine harness.
Disconnect the machine harness connectors from the ECM.
At the machine harness connector, measure the resistance from the signal contact J2-7 (wire 306-GN(Green)) to all contacts that are used in the machine harness connectors for the ECM. Expected Result:Each resistance measurement is greater than 5 ohms.Results:
YES - Each resistance measurement is greater than 5 ohms. The machine harness is correct. Proceed to Test Step 3.
NO - One or more resistance measurements are less than 5 ohms. There is a short in the machine harness. The short is between J2-7 (wire 306-GN(Green)) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS
Inspect the harness connectors and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 0444 FMI 06. Expected Result:The CID 0444 FMI 06 is active.Results:
YES - The CID 0444 FMI 06 is active. The diagnostic code has not been corrected. The ECM may have failed.Repair: The ECM is unlikely to have failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. Refer