AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

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

   OK

   USE SIMULATION METHOD TO CHECK

   Click hereClick hereClick here

   NG

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

   NG

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

   OK

3. CHECK RADIO ANTENNA

   1. Remove the roof antenna pole sub-assembly from the amplifier antenna assembly.

      Click here

   2. Turn the ignition switch to ACC with the radio and display receiver assembly connector connected.

   3. Place a screwdriver, thin wire or other metal object on the amplifier antenna threaded installation position for the roof antenna pole sub-assembly, and check that noise can be heard from the speakers.

      OK

      Noise can be heard from the speakers.

   Result

   Proceed to
   OK
   NG

   OK

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

   Click here

   NG

4. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   1. 

      Remove the antenna connector from the radio and display receiver assembly.

   2. Turn the ignition switch to ACC with the radio and display 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 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

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

   Click here

   OK

5. 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.

      Standard Voltage

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

   Result

   Proceed to
   OK
   NG

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

   Click here

   OK

6. CHECK ANTENNA CORD SUB-ASSEMBLY

   1. 

      *a	Front view of wire harness connector (to Radio and Display Receiver Assembly)
      *b	Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly)

      Disconnect the radio and display receiver assembly connector.

   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) - 2	Always	Below 1 Ω
      RA-5 (ANT+) - 3	Always	Below 1 Ω
      RA-3 (MAIN) - Body ground	Always	10 kΩ or higher
      RA-5 (ANT+) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   NG

   REPLACE ANTENNA CORD SUB-ASSEMBLY

   Click here

   OK

7. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

   1. 

      *a	Front view of wire harness connector (to Antenna Cord Sub-assembly)
      *b	Front view of wire harness connector (to No. 3 Antenna Cord Sub-assembly)

      Remove the antenna connector from the antenna cord sub-assembly.

   2. Remove 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
      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

   NG

   REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

   Click here

   OK

8. CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY

   1. 

      *a	Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly)
      *b	Front view of wire harness connector (to Antenna with Holder Assembly)

      Remove the antenna connector from the No. 2 antenna cord sub-assembly.

   2. Remove the antenna connector from the antenna with holder assembly.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      1 - 2	Always	Below 1 Ω
      3 - 3	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

   NG

   REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY

   Click here

   OK

9. CHECK ROOF ANTENNA POLE SUB-ASSEMBLY

   1. Check that the roof antenna pole sub-assembly is securely installed.

      Click here

      OK

      The roof antenna pole sub-assembly is installed properly

   Result

   Proceed to
   OK
   NG

   NG

   REINSTALL ROOF ANTENNA POLE SUB-ASSEMBLY

   Click here

   OK

10. CHECK ROOF ANTENNA POLE SUB-ASSEMBLY

    1. Replace the roof antenna pole sub-assembly and check if radio broadcasts can be received normally.

       Click here

       OK

       Radio broadcasts can be received normally.

    Result

    Proceed to
    OK
    NG

    OK

    END (ROOF ANTENNA POLE SUB-ASSEMBLY IS DEFECTIVE)

    NG

11. CHECK ANTENNA WITH HOLDER ASSEMBLY

    1. Replace the antenna with holder assembly and check if radio broadcasts can be received normally.

       Click here

       OK

       Radio broadcasts can be received normally.

    Result

    Proceed to
    OK
    NG

    OK

    END (ANTENNA WITH HOLDER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click here