LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2019 >> NX 300h >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio / Video System (Except 8 Speakers) - Circuit Tests & Symptom Tests >> AUDIO AND VISUAL SYSTEM (except 8 Speakers) >> Radio Broadcast cannot be Received or Poor Reception [10/2014 - 09/2017] >> Procedure

Radio Broadcast cannot be Received or Poor Reception [10/2014 - 09/2017]: Procedure

  1. CHECK RADIO 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 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

    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 RECEIVER ASSEMBLY 
    1. Remove the antenna connector from the radio receiver assembly.
      GTY427448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the power switch on (ACC) with the radio receiver assembly connector connected.
    3. Turn the radio on and tune into AM mode.
    4. Place a screwdriver, thin wire or other metal object on the radio 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 RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    OK 

    See step  4

  4. INSPECT RADIO RECEIVER ASSEMBLY 
    1. Disconnect the RA radio receiver assembly connector.
      GTY383748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

    Result: 

    OK 

    See step  5

  5. CHECK NO. 1 ANTENNA CORD SUB-ASSEMBLY 
    1. Remove the antenna connector from the radio receiver assembly.
      GTY509184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Radio Receiver Assembly)
      *b Front view of wire harness connector
      (to No. 2 Antenna Cord Sub-assembly)
    2. Remove the antenna connector from the No. 2 antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 1 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    OK 

    See step  6

  6. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY 
    1. Remove the antenna connector from the No. 1 antenna cord sub-assembly.
      GTY515251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to No. 4 Antenna Cord Sub-assembly)
    2. Remove the antenna connector from the No. 4 antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 - 1 Always Below 1 Ω
      4 - 2 Always Below 1 Ω
      1 - 3 Always Below 1 Ω
      3 - Body ground Always 10 kΩ or higher
      4 - Body ground Always 10 kΩ or higher
      1 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    OK 

    See step  7

  7. CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY 
    1. Remove the antenna connector from the No. 2 antenna cord sub-assembly.
      GTY517707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 2 Antenna Cord Sub-assembly)
      *b Front view of wire harness connector
      (to No. 5 Antenna Cord Sub-assembly)
    2. Remove the antenna connector from the No. 5 antenna cord sub-assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 1 Always Below 1 Ω
      2 - 2 Always Below 1 Ω
      3 - 3 Always Below 1 Ω
      1 - Body ground Always 10 kΩ or higher
      2 - Body ground Always 10 kΩ or higher
      3 - Body ground Always 10 kΩ or higher

      Result

      Result Proceed to
      OK (Rear spoiler sub-assembly [radio antenna] malfunction) A
      OK (Window glass antenna wire [radio antenna] malfunction) B
      NG C

    Result: 

    B 

    See step  10

    Result: 

    C 

    REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    A 

    See step  8

  8. CHECK NO. 5 ANTENNA CORD SUB-ASSEMBLY 
    1. Remove the antenna connector from the No. 4 antenna cord sub-assembly.
      GTY497743Courtesy 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 Rear Spoiler Sub-assembly [Radio Antenna])
    2. Remove the antenna connector from the rear spoiler sub-assembly (radio antenna).
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 - 3 Always Below 1 Ω
      3 - 2 Always Below 1 Ω
      1 - Body ground Always 10 kΩ or higher
      3 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 5 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    OK 

    See step  9

  9. CHECK REAR SPOILER SUB-ASSEMBLY (RADIO ANTENNA) 
    1. Replace the rear spoiler sub-assembly (radio antenna).

      Refer to REMOVAL [10/2014 - ]

    2. Check if radio broadcasts can be received normally.

      OK

      Radio broadcasts can be received normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (REAR SPOILER SUB-ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

  10. CHECK NO. 5 ANTENNA CORD SUB-ASSEMBLY 
    1. Remove the antenna connector from the No. 4 antenna cord sub-assembly.
      GTY496901Courtesy 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 No. 1 Amplifier Antenna Assembly [Radio Antenna])
    2. Remove the antenna connector from the No. 1 amplifier antenna assembly (radio antenna).
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      2 - 1 Always Below 1 Ω
      3 - 3 Always Below 1 Ω
      2 - Body ground Always 10 kΩ or higher
      3 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 5 ANTENNA CORD SUB-ASSEMBLY. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    OK 

    See step  11

  11. INSPECT BACK DOOR GLASS (WINDOW GLASS ANTENNA WIRE) 
    1. Inspect the back door glass (window glass antenna wire).

      Refer to ON-VEHICLE INSPECTION [10/2014 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR BACK DOOR GLASS (WINDOW GLASS ANTENNA WIRE). Refer to  REPAIR [10/2014 - ] 

    Result: 

    OK 

    See step  12

  12. CHECK NO. 1 AMPLIFIER ANTENNA ASSEMBLY (RADIO ANTENNA) 
    1. Replace the No. 1 amplifier antenna assembly.

      Refer to REMOVAL [10/2014 - ]

    2. Check if radio broadcasts can be received normally.

      OK

      Radio broadcasts can be received normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (NO. 1 AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [10/2014 - 09/2017] 

scientia non olet · About LEMON Manuals