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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) >> Combination Meter ECU Communication Stop Mode [06/2018 - ] >> Procedure

Combination Meter ECU Communication Stop Mode [06/2018 - ]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (COMBINATION METER ASSEMBLY MAIN LINE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the G17 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G17-29 (CANH) - G17-30 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY796694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER 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
      G17-31 (ES) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      G17-40 (EP) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY796693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter 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
      G17-21 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      G17-22 (B) - Body ground Power switch off 11 to 14 V

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)