854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 06 Caterpillar


MID 049 - CID 0427 - FMI 06
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MID 049 CID 0427 FMI 06

Conditions Which Generate This Code:



Illustration 1g01968634
Schematic of the front axle oil temperature sensor
Sales model 854G/992G


Illustration 2g02118953
Schematic of the front axle oil temperature sensor
Sales model 994F

This diagnostic code is associated with the front axle oil temperature sensor. This diagnostic code is recorded when the ECM reads the signal from the sensor (wire 429-YL(Yellow)) as being shorted to ground. The sensor produces a PWM signal. The sensor signal wire (429-YL(Yellow)) connects to contact J2-36 of the ECM.

The possible causes of this diagnostic code are listed:

  • The signal circuit (wire 429-YL(Yellow)) is shorted to ground.

  • The sensor has failed.

  • The ECM has failed. This is unlikely.

Note: The test step “CHECK THE SENSOR” can create numerous related diagnostic codes. The related diagnostic codes will be shown as being not active, after all of the harnesses have been reconnected. Clear all related diagnostic codes after this procedure is completed.

Test Step 1. CHECK THE SENSOR.

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

  2. Ensure that the diagnostic code is active.

  3. Observe the status of the diagnostic code. Then, disconnect the sensor from the machine harness.

Expected Result:

The diagnostic code remains active. When the sensor is unplugged the diagnostic changes to an FMI 03.

Results:

  • OK - The diagnostic code is no longer active. The machine harness and the ECM are operating properly. Proceed to test step 2.

  • NOT OK - The diagnostic code remains active. The sensor has not failed. The machine harness may have failed or the ECM may have failed. Proceed to Test Step 2.

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

  1. The sensor remains disconnected from the machine harness.

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

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

  4. At the J2 machine harness connector, measure the resistance from contact J2-36 (wire 429-YL(Yellow)) to ground.

Expected Result:

The resistance is greater than 5000 ohms.

Results:

  • OK - The resistance is greater than 5000 ohms.

    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, "Module - Replace".

    STOP

  • NOT OK - The resistance is less than 5000 ohms.

    Repair: The machine harness has failed. There is a short in the machine harness between the signal circuit and ground. Repair the machine harness or replace the machine harness.

    STOP

Information System:

854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 06
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 04
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 04
992K Wheel Loader Electrohydraulic System MID 082 - CID 2408 - FMI 06
992K Wheel Loader Electrohydraulic System MID 082 - CID 2408 - FMI 05
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 03
992K Wheel Loader Electrohydraulic System MID 082 - CID 2408 - FMI 03
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 03
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 08
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0427 - FMI 08
Pilot Oil Pressure Reducing Valve Retrofit{5467}
D7E Track-Type Tractor Camera - If Equipped
992K Wheel Loader Electrohydraulic System MID 082 - CID 2405 - FMI 03
992K Wheel Loader Electrohydraulic System MID 082 - CID 2405 - FMI 05
992K Wheel Loader Electrohydraulic System MID 082 - CID 2405 - FMI 06
992K Wheel Loader Electrohydraulic System MID 082 - CID 2405 - FMI 13
992K Wheel Loader Electrohydraulic System MID 082 - CID 2409 - FMI 11
992K Wheel Loader Electrohydraulic System MID 082 - CID 2405 - FMI 11
992K Wheel Loader Electrohydraulic System MID 082 - CID 2408 - FMI 11
992K Wheel Loader Electrohydraulic System MID 082 - CID 2576 - FMI 03
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0428 - FMI 03
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0428 - FMI 03
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0428 - FMI 04
854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM MID 049 - CID 0428 - FMI 04