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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (Hybrid) - Circuit Tests (1 Of 4) & Diagnostic Codes >> CAN COMMUNICATION SYSTEM (for HV Model) >> Center Airbag Sensor Communication Stop Mode [06/2018 - ] >> Procedure

Center Airbag Sensor Communication Stop Mode [06/2018 - ]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (AIRBAG ECU ASSEMBLY MAIN LINE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the G64 airbag ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G64-26 (CANH) - G64-27 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY825682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Airbag ECU Assembly)

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (AIRBAG ECU ASSEMBLY) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G64-32 (E2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      G64-33 (E1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY825687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Airbag ECU Assembly)
    2. Reconnect the cable to the negative (-) auxiliary battery terminal.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      G64-36 (IG2) - Body ground Power switch on (IG) 11 to 14 V

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)