816F Series 2 Landfill Compactor, 815F Series 2 Soil Compactor and 814F Series 2 Wheel Dozer Caterpillar


MID 081 - CID 1711 - FMI 03

Usage:

814F II BXG


Conditions Which Generate This Code:


Illustration 1g01341098

Schematic of the switch (transmission downshift)

This diagnostic code is associated with the switch (transmission downshift). The switch is connected to two inputs of the ECM. One contact is open and the other contact is grounded during proper operation. Also, the switch has a ground wire.

The possible causes of this diagnostic code are listed:

  • The normally open contact and the normally closed contact are open.

  • The contact that is currently closed to ground is shorted to the +battery circuit.

Note: The following test procedure may create other diagnostic codes. Ignore these diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 1711 FMI 03 is active before performing this procedure.

System Response:

The diagnostic code of CID 1711 FMI 03 will be logged in the internal memory of the ECM.

When this diagnostic code occurs, the switch (transmission downshift) does not function.

Test Step 1. CHECK THE GROUND CIRCUIT OF THE SWITCH IN THE HARNESS.

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

  1. Disconnect the machine harness connector(s) from the ECM.

  1. Measure the resistance between contact J1-15 (wire 202-BK) of the machine harness for the ECM and contact A (wire 202-BK) at the switch.

Expected Result:

The resistance is less than 5 ohms.

Results:

  • OK - The resistance is less than 5 ohms. The circuit is correct. Proceed to Test Step 2.

  • NOT OK - The resistance is greater than 5000 ohms. The circuit is open. The machine harness has failed.

    Repair: Repair the machine harness or replace the machine harness.

    STOP

Test Step 2. CHECK THE SWITCH CIRCUITS FOR A SHORT TO THE +BATTERY CIRCUIT.

  1. The machine harness connector(s) remains disconnected from the ECM.

  1. The disconnect switch and the key start switch remain in the OFF position.

  1. Disconnect contact A (wire 202-BK), contact B (wire 974-PU) and contact C (wire 978-GN) from the switch. If the switch has a connector, just disconnect the connector.

  1. At the machine harness connector for the ECM, measure the resistance from contact J2-5 (wire 978-GN) and contact J1-32 (wire 974-PU) of the machine harness to all the contacts that are used in the machine harness connectors for the ECM.

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.

  • NO - One or more of the measurements were less than 5 ohms. There is a short in the machine harness.

    Repair: The short is between wire 978-GN and the circuit with the lowest resistance measurement or the short is between wire 974-PU and the circuit with the lowest resistance measurement. Repair the machine harness or replace the machine harness.

    STOP

Test Step 3. CHECK THE SWITCH CIRCUITS IN THE HARNESS.

  1. The machine harness remains disconnected from the ECM and the switch.

  1. At the switch, connect a jumper wire between wire 978-GN and wire 974-PU.

  1. At the harness connector for the ECM, measure the resistance from contact J2-5 (wire 978-GN) to contact J1-32 (wire 974-PU).

Expected Result:

The resistance is less than 5 ohms.

Results:

  • OK - The resistance is less than 5 ohms. Proceed to Test Step 4.

  • NOT OK - The resistance is greater than 5000 ohms. The circuit is open.

    Repair: The machine harness has failed. Repair the machine harness or replace the machine harness.

    STOP

Test Step 4. CHECK THE OPERATION OF THE SWITCH.

  1. Remove the jumper that was installed in the previous Test Step.

  1. The machine harness remains disconnected from the switch.

  1. At the switch, connect one lead from a multimeter to contact C.

  1. Connect the other lead from a multimeter to contact A of the switch.

  1. Measure the resistance between contact C and contact A. Note the resistance.

  1. Disconnect the lead from contact A and connect the lead to contact B.

  1. Measure the resistance between contact C and contact B.

Expected Result:

One of the resistance measurements is less than 5 ohms, and the other resistance measurement is greater than 5000 ohms.

Results:

  • YES - One of the resistance measurements is less than 5 ohms. The other resistance measurement is greater than 5000 ohms. The switch is operating correctly. Proceed to Test Step 5.

  • NO - The resistance measurements do not differ for both contacts. The switch has failed.

    Repair: Replace the switch.

    STOP

Test Step 5. CHECK THE OPERATION OF THE SWITCH

  1. The machine harness remains disconnected from the switch.

  1. Press and hold the switch.

  1. The multimeter leads remain connected to contact C and B.

  1. Measure the resistance between contact C and contact B. Note the resistance.

  1. Disconnect the lead from contact B and connect the lead to contact A.

  1. Measure the resistance between contact C and contact A. Note the resistance.

Expected Result:

The resistance measurements are opposite of the measurements from the previous Test Step.

Results:

  • YES - The resistance measurements are opposite of the measurements from the previous Test Step. The switch is operating correctly. Proceed to Test Step 6.

  • NO - The resistance measurements do not differ for both contacts, or the measurements have not changed from the previous Test Step. The switch has failed.

    Repair: Replace the switch.

    STOP

Test Step 6. CHECK IF THE DIAGNOSTIC CODE REMAINS.

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

  1. Reconnect all the harness connectors.

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

  1. Operate the machine.

  1. Check the status of the CID 1711 FMI 03.

Expected Result:

The CID 1711 FMI 03 is active.

Results:

  • YES - The CID 1711 FMI 03 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 Testing and Adjusting, "Electronic Control Module (ECM) - Replace".

    STOP

  • NO - The CID 1711 FMI 03 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

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