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Home >> Lexus >> 2018 >> ES 300h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (Diagnostic Codes & Symptom Tests) >> Navigation System >> DTC U0073: Sending Malfunction (Navigation to APGS); DTC U0100: Engine ECU Communication; DTC U0129: VSC(ECB)ECU Communication; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Meter ECU Communication; DTC U0164: Air Conditioner ECU Communication; DTC U0198: Lost Communication with Telematic Control Module; DTC U0293: HV ECU Communication; DTC U1110: Clearance Sonar ECU Communication [08/2016 - ] >> Procedure
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DTC U0073: Sending Malfunction (Navigation to APGS); DTC U0100: Engine ECU Communication; DTC U0129: VSC(ECB)ECU Communication; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Meter ECU Communication; DTC U0164: Air Conditioner ECU Communication; DTC U0198: Lost Communication with Telematic Control Module; DTC U0293: HV ECU Communication; DTC U1110: Clearance Sonar ECU Communication [08/2016 - ]: Procedure

  1. CHECK DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2016 - ]

    2. Recheck for DTCs and check that no DTCs are output.

      OK

      No DTCs are output.

      Result

      Result Proceed to
      OK A
      NG (w/ Central Gateway ECU) B
      NG (w/o Central Gateway ECU) C

    Result:  1

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] 

    Result:  2

    GO TO CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) 

    w/ Central Gateway ECU: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ]

    Result:  3

    GO TO CAN COMMUNICATION SYSTEM (w/o Central Gateway ECU) 

    w/o Central Gateway ECU: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ]