416E, 420E and 430E Backhoe Loaders MID 039 - CID 2245 - FMI 03 Caterpillar

Conditions Which Generate This Code:

Illustration 1	g02108000
Schematic of the "Hoe Auxiliary Valve No. 2 (Port B)" solenoid

This diagnostic code is associated with the 8th Function Hoe Auxiliary Valve No. 2 (Port B) solenoid . An FMI 03 means that the ECM has determined that the voltage of the solenoid circuit is above normal.

Possible causes of the diagnostic code are:

• The energize circuit of the solenoid is shorted to another power supply circuit.

• The ECM has failed, but 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 2245 FMI 03 is active before performing this procedure.

Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.

System Response:

• The system will not initialize after power is cycled.

• The hydraulic functions for the Extend, Retract, Reverse, and Forward positions are lost after power is cycled.

• There will be no effect to the systems after power up until the next reset of the valve ECM.

Test Step 1. CHECK THE SOLENOID ENERGIZE CIRCUIT FOR A SHORT.

1. Turn the key start switch and the disconnect switch to the OFF position.

2. Disconnect the 8th Function Hoe Auxiliary Valve No. 2 (Port B) solenoid from the machine harness connector.

3. Disconnect the J1 machine harness connector from the ECM.

4. On the J1 ECM connector, measure the resistance from contact J1-62 (wire T972-GN) to all the other contact pins used in the connector.

Expected Result:

The measurements are all greater than 5000 ohms.

Results:

• OK - There are no shorts in the wires. Proceed to Test Step 2.

• NOT OK - There is a short in the machine harness or in the wires. The short is to the wire with the low resistance reading.

  Repair: Repair, or replace, the machine harness. Ensure that the problem has been corrected.

  STOP

Test Step 2. CHECK THE OPERATION OF THE ECM.

Reconnect the J1 machine harness connector to the ECM. The machine harness connector for the solenoid remains disconnected.

1. Turn the disconnect switch and the key start switch to the ON position.

2. Observe the status of the active diagnostic code.

Expected Result:

The diagnostic code of FMI 03 changes to an FMI 05 diagnostic code.

Results:

• OK - The FMI 03 changed to an FMI 05 diagnostic code. The FMI 05 was activated because the solenoid circuit is disconnected. The ECM has responded correctly to the condition of an open solenoid circuit. Reconnect the solenoid to the harness. Proceed to Test Step 3.

• NOT OK - The FMI 03 diagnostic code did not change to an FMI 05 diagnostic code. The active diagnostic code did not change after the solenoid was disconnected from the ECM.

  Repair: The ECM has not responded correctly to the condition of an open solenoid circuit. The ECM might have failed. Prior to replacing an ECM, contact your Dealership Technical Communicator for possible consultation with AVSpare. If the ECM needs to be replaced, see Testing and Adjusting, "Electronic Control Module (ECM) - Replace".

  STOP

Test Step 3. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE.

1. Inspect the harness connectors. Clean the contacts of the harness connectors. Check the wires for damage to the insulation that is caused by excessive heat, battery acid, or chafing.

2. Perform a 45 N (10 lb.) pull test on each of the wires that are associated with the circuit.

3. Reconnect all harness connectors. Make sure that the clips for each connector are securely fastened, to make sure that the connectors are fully seated.

4. Turn the disconnect switch and the key start switch to the ON position.

5. Operate the machine.

6. Determine if the CID 2245 FMI 03 diagnostic code is active.

Expected Result:

The CID 2245 FMI 03 diagnostic code is active.

Results:

• YES - The CID 2245 FMI 03 is active. The problem has not been corrected.

  Repair: Is unlikely that the ECM has failed. Perform this Test Step again. If the problem has not been corrected, perform a "wiggle test" on the solenoid circuit in the machine wiring harness. Use the AVSpare Electronic Technician (ET) in order to perform the test. The "wiggle test" is used in order to detect intermittent shorts or open connections in the wiring harness of the machine.If the cause of the diagnostic code is not found, the ECM might have failed. Before replacing the ECM, contact your Dealership Technical Communicator for possible consultation with AVSpare. If the ECM needs to be replaced, see Testing and Adjusting, "Electronic Control Module (ECM) - Replace".

  STOP

• NO - The CID 2245 FMI 03 is not active. The initial diagnostic code was probably caused by a poor electrical connection that was resolved when a harness connector was disconnected and reconnected.

  Repair: The problem does not exist at this time. Resume normal machine operation.

  STOP