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METER / GAUGE SYSTEM, Diagnostic DTC:U0100

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DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
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DESCRIPTION

The combination meter assembly communicates with the ECM via the CAN communication lines (CAN No. 1 Bus).

DTC No. DTC Detection Condition Trouble Area
U0100

When either of following conditions detected:


  1. Vehicle speed 5 km/h (3.1 mph) or more and IG voltage 10.5 V or more

  2. No communication with ECM continues for 3 seconds or more (No communication with ECM and skid control ECU continues for 60 seconds or more)

  • CAN communication system

  • ECM
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


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    CONFIRM DTC OUTPUT


    1. Connect the intelligent tester to the DLC3.

    2. Ignition switch on (IG).

    3. Turn the tester on.

    4. Clear the stored DTCs by selecting the following menu items on the tester: Body Electrical / Trouble Codes.

    5. Drive the vehicle at more than 5 km/h (3.1 mph) for at least 60 seconds.

    6. Stop the vehicle.

    7. Check for DTCs (Click here).

      Result
      Result Proceed to
      DTC is output. A
      DTC is not output. B
      Tip:

      If CAN communication system DTC U0100 and another DTC are output at the same time, perform troubleshooting for CAN communication system DTC U0100 first.


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    USE SIMULATION METHOD TO CHECKClick here

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    GO TO CAN COMMUNICATION SYSTEMClick here