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Home >> Toyota >> 2017 >> Sienna LE, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> Diagnostic Codes >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [11/2017 - ] >> Procedure
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [11/2017 - ]: Procedure

  1. CONFIRM DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Trouble Codes.
    5. Clear DTCs.

      Refer to DTC CHECK / CLEAR [12/2015 - ]

    6. Drive the vehicle at more than 5 km/h (3.1 mph) for at least 60 seconds.
    7. Stop the vehicle.
    8. Check DTCs.

      Refer to DTC CHECK / CLEAR [12/2015 - ]

      Result

      Result Proceed to
      DTC is output A
      DTC is not output B

      HINT: 

      If CAN communication system DTC U0100, U0129, U0131, U0151, U0163, U023A or U1104 and another DTC are output at the same time, perform troubleshooting for CAN communication system DTC U0100, U0129, U0131, U0151, U0163, U023A or U1104 first.

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - ] 

    Result: 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - ]