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Radio Broadcast cannot be Received or Poor Reception [06/2020 - 10/2022]: Procedure

  1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Check the radio automatic station search function by activating it.

      OK

      Automatic station search function stops on a station.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2020 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK OPTIONAL COMPONENTS 
    1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

      OK

      Optional components are not installed.

      NOTE:

      Do not remove optional components without the permission of the customer.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) 

    Result: 

    OK 

    See step  3

  3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Preparation for check
      GTY381638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the RA radio and display receiver assembly connector.
    2. Check for noise
      1. Turn the ignition switch to ON with the radio and display receiver assembly connector connected.
      2. Turn the radio and display receiver assembly on and tune into AM mode.
      3. Place a screwdriver, thin wire or other metal object on the radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

        OK

        Noise can be heard from the speakers.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    OK 

    See step  4

  4. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Disconnect the RA radio and display receiver assembly connector.
    2. Measure the voltage according to the value(s) in the table below.
      GTY432194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Radio and Display Receiver Assembly)

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      RA-5 (ANT+) - Body ground Ignition switch ACC
      Radio switch on and FM or AM selected      		 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

    Result: 

    OK 

    See step  5

  5. CHECK VEHICLE CONDITION 
    1. Check the vehicle condition.

      Result

      Result Proceed to
      w/o Manual (SOS) Switch A
      w/ Manual (SOS) Switch B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  6

  6. CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the roof antenna assembly.
      GTY874564Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 3 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to Roof Antenna Assembly)
    2. Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A-2 - B-4 Always Below 1 Ω
      A-2a - B-4a Always Below 1 Ω
      A-1 - B-2 Always Below 1 Ω
      A-2 - Body ground Always 10 kΩ or higher
      A-1 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.
      GTY855208Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 4 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to Antenna Cord Sub-assembly)
    2. Disconnect the antenna connector from the antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B-4 - C-4 Always Below 1 Ω
      B-4a - C-4a Always Below 1 Ω
      B-2 - C-2 Always Below 1 Ω
      B-4 - Body ground Always 10 kΩ or higher
      B-2 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - ] 

    Result: 

    OK 

    See step  8

  8. CHECK ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.
      GTY862570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 3 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to Radio and Display Receiver Assembly)
    2. Disconnect the antenna connector from the radio and display receiver assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C-4 - RA-3 (MAIN) Always Below 1 Ω
      C-4a - RA-4 Always Below 1 Ω
      C-2 - RA-5 (ANT+) Always Below 1 Ω
      C-4 - Body ground Always 10 kΩ or higher
      C-2 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022] 

    Result: 

    OK 

    See step  9

  9. CHECK ROOF ANTENNA ASSEMBLY 
    1. Replace the roof antenna assembly with a new or known good one.

      Refer to REMOVAL [06/2020 - ]

      OK

      Radio broadcasts can be received normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (ROOF ANTENNA ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2020 - 10/2022] 

  10. CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the roof antenna assembly.
      GTY902926Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Roof Antenna Assembly)
      *b Front view of wire harness connector
      (to No. 3 Antenna Cord Sub-assembly)
    2. Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A-2 - B-6 Always Below 1 Ω
      A-2a - B-6a Always Below 1 Ω
      A-1 - B-4 Always Below 1 Ω
      A-2 - Body ground Always 10 kΩ or higher
      A-1 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - ] 

    Result: 

    OK 

    See step  11

  11. CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.
      GTY941568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 4 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to Antenna Cord Sub-assembly)
    2. Disconnect the antenna connector from the antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B-6 - C-6 Always Below 1 Ω
      B-6a - C-6a Always Below 1 Ω
      B-4 - C-4 Always Below 1 Ω
      B-6 - Body ground Always 10 kΩ or higher
      B-4 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - ] 

    Result: 

    OK 

    See step  12

  12. CHECK ANTENNA CORD SUB-ASSEMBLY 
    1. Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.
      GTY845167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 3 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to Radio and Display Receiver Assembly)
    2. Disconnect the antenna connector from the radio and display receiver assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C-6 - RA-3 (MAIN) Always Below 1 Ω
      C-6a - RA-4 Always Below 1 Ω
      C-4 - RA-5 (ANT+) Always Below 1 Ω
      C-6 - Body ground Always 10 kΩ or higher
      C-4 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  9

    Result: 

    NG 

    REPLACE ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [06/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022] 

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