 | |
| Illustration 1 | g01853834 |
Schematic of the start relay | |
This diagnostic code is associated with the start relay. The FMI 05 means that the ECM has determined that the current of the relay is below normal.
The possible causes of this diagnostic code are listed below:
- The energizer circuit of the relay is open.
- The return circuit of the relay is open.
- The relay has failed.
- The ECM has failed. This is unlikely.
Note: The following test procedure may create other diagnostic codes. Clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 0444 FMI 05 is active before performing this procedure.
Note: Use a calibrated 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.
- Turn the disconnect switch to the ON position.
- Turn the key start switch to the ON position.
Note: Do not start the engine.
- Disconnect the relay with the active diagnostic code from the machine harness.
- At the machine harness connector for the relay, place a jumper wire from contact 1 (wire 306-GN) to contact 2 (wire 921-WH).
- Observe the status of the CID 0444 FMI 05.
Expected Result:
The CID 0444 FMI 05 remains active. The FMI has not changed and the "05" is still active.
Results:
- OK - The diagnostic code remains active. The jumper wire does not affect the diagnostic code. Proceed to Test Step 2.
- NOT OK - The diagnostic is no longer active. The relay has failed.
Repair: The relay has failed. Repeat this Test Step "CHECK THE RELAY" in order to verify the failure of the relay. Replace the relay. Verify that the new relay corrects the problem.
STOP
Test Step 2. CHECK THE HARNESS FOR AN OPEN.
- Turn the key start switch and the disconnect switch to the OFF position.
- Disconnect the machine harness connector(s) from the ECM.
- The jumper wire that was installed in the previous test remains in place.
- At the machine harness connector, measure the resistance from signal contact J1-8 (wire 306-GN) to contact J1-7 (wire 921-WH).
Expected Result:
The resistance is less than 5.0 ohms.
Results:
- OK - The resistance is less than 5.0 ohms. The machine harness is correct. Proceed to Test Step 3.
- NOT OK - The resistance is greater than 5000 ohms. The resistance measurement is not correct. There is an open circuit in the machine harness.
Repair: The open is in wire 306-GN or in wire 921-WH of the machine harness. Repair the machine harness or replace the machine harness.
STOP
Test Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
- Perform the following:
- Inspect the contacts of the harness connectors.
- Clean the contacts of the harness connectors.
- Inspect the contacts of the harness connectors.
- Reconnect all harness connectors.
- Turn the disconnect switch to the ON position.
- Turn the key start switch to the ON position.
- Operate the machine.
- Check the status of the CID 0444 FMI 05.
Expected Result:
The CID 0444 FMI 05 is active.
Results:
- OK - The CID 0444 FMI 05 is active. The diagnostic code has not been corrected. The ECM may have failed.
Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. See the Testing and Adjusting, "Electronic Control Module (ECM) - Replace" Story in this manual for additional information.
STOP
- NOT OK - The CID 0444 FMI 05 is not active. The diagnostic code does not exist at this time.
Repair: The initial diagnostic code was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.
STOP