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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 118 (Can Communication System (HV) - Circuit Tests (1 Of 9) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Combination Meter ECU Communication Stop Mode [10/2022 - 11/2023] >> Procedure

Combination Meter ECU Communication Stop Mode [10/2022 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      except 12.3 Inch Display A
      for 12.3 Inch Display B

    Result: 

    B 

    See step  4

    Result: 

    A 

    See step  2

  2. 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 H21 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H21-32 (CANH) - H21-31 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY879550Courtesy 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  3

  3. 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
      H21-2 (EP) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      H21-21 (ES) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY935277Courtesy 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
      H21-39 (IG+) - Body ground Ignition switch ON 11 to 14 V
      H21-40 (B) - Body ground Ignition switch off 11 to 14 V

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

  4. 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 H113 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H113-31 (CANH) - H113-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY1110543Courtesy 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  5

  5. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the H112 combination meter assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H112-1 (EP) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      H112-2 (ES) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY1118453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    3. Reconnect the cable to the negative (-) auxiliary battery terminal.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      H112-5 (B) - Body ground Ignition switch off 11 to 14 V
      H112-6 (IG+) - Body ground Ignition switch ON 11 to 14 V

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

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