416E, 420E and 430E Backhoe Loaders MID 039 - CID 1405 - FMI 06 Caterpillar

Conditions Which Generate This Code:

Illustration 1	g02157466
Schematic of the transmission "Speed Clutch 2" solenoid (No. 5) circuit

This diagnostic code is associated with a transmission "Speed Clutch 2" solenoid (No. 5). An FMI 03 means that the ECM has determined that the voltage of the solenoid circuit is above normal.

Possible causes of this diagnostic code are:

• The energize circuit of the solenoid is shorted to ground.

• The solenoid has failed.

• The ECM may have 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 1405 FMI 06 is active before performing this procedure.

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

System Response:

The transmission will be placed in the Neutral gear until the diagnostic code has been cleared.

Test Step 1. CHECK THE SOLENOID.

1. Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.

2. Observe the status of the diagnostic code.

3. Disconnect the Speed Clutch 2 solenoid (No. 5) from the machine harness.

Expected Result:

The CID 1405 FMI 06 diagnostic code changes to a CID 1405 FMI 05 diagnostic code when the solenoid is disconnected.

Results:

• YES - The CID 1405 FMI 06 diagnostic code changes to a CID 1405 FMI 05 diagnostic code when the solenoid is disconnected. The solenoid circuits are correct.

  Repair: The solenoid has failed. Repeat this Test Step in order to verify the solenoid failure. Replace the solenoid.

  STOP

• NO - The CID 1405 FMI 06 diagnostic code remains active. Proceed to Test Step 2.

Test Step 2. CHECK THE SOLENOID ENERGIZE CIRCUIT FOR A SHORT TO GROUND.

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

2. The solenoid remains disconnected from the machine harness.

3. Disconnect the J2 machine harness connector from the ECM.

4. At the ECM J2 harness connector, measure the resistance from contact pin J2-06 (wire 903-GY) to all other contacts used in the J2 ECM harness connector.

Expected Result:

Each resistance measurement is greater than 5000 ohms.

Results:

• OK - Each resistance measurement is greater than 5000 ohms. The harness is correct. Proceed to Test Step 3.

• NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-06 (wire 903-GY) and the circuit with the low resistance measurement.

  Repair: Repair, or replace, the machine harness.

  STOP

Test Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.

1. Inspect the harness connectors and clean the contacts of the harness connectors.

2. Reconnect all harness connectors.

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

4. Operate the machine.

5. Check the status of the CID 1405 FMI 06 diagnostic code.

Expected Result:

The CID 1405 FMI 06 diagnostic code is active.

Results:

• YES - The CID 1405 FMI 06 diagnostic code is active. The diagnostic code has not been corrected. The ECM may have failed.

  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 1405 FMI 06 diagnostic code 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 that was resolved when a connector was disconnected and reconnected. Resume normal machine operation.

  STOP