DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Except HV) - Circuit Tests (2 Of 8) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Radio Receiver Assembly Communication Stop Mode [10/2022 - 11/2023] >> Procedure

Radio Receiver Assembly Communication Stop Mode [10/2022 - 11/2023]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (RADIO AND DISPLAY RECEIVER ASSEMBLY BRANCH LINE) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the H108 radio and display receiver assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H108-13 (CANH) - H108-14 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      GTY1115700Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the H107 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H107-1 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω
      GTY1112023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)
    3. Reconnect the cable to the negative (-) battery terminal.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      H107-15 (IG) - Body ground Ignition switch ON 11 to 14 V

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    Result: 

    OK 

    See step  3

  3. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Stop and Start System A
      w/o Stop and Start System B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  4

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      H107-4 (+B1) - Body ground Ignition switch ON 10.5 to 16 V
      H107-16 (ACC1) - Body ground Ignition switch ON 10.5 to 16 V
      GTY1112024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    GO TO STOP AND START SYSTEM (FOR BACKUP BOOST CONVERTER CIRCUIT) 

    Refer to Backup Boost Converter Circuit [10/2022 - 11/2023]

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      H107-4 (+B1) - Body ground Always 11 to 14 V
      H107-16 (ACC1) - Body ground Ignition switch ON 11 to 14 V
      GTY1112024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio and Display Receiver Assembly)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

Diesel-Data.com