NAVIGATION SYSTEM Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

CAUTION / NOTICE / HINT

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

   
   

   OK

   USE SIMULATION METHOD TO CHECK Click 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 RECEIVER ASSEMBLY

   
   

   1. 

      Preparation for check

      
      

      1. Disconnect the RA radio receiver assembly connector.

   2. Check for noise

      
      

      1. Turn the power switch on (ACC) with the radio receiver assembly connector connected.

      2. Turn the radio receiver assembly on and enter AM mode.

      3. 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

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

4. CHECK BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE)

   
   
   1. 

      *a	Tester Probe
      *b	Antenna Wire
      *c	Tin Foil

      Check for continuity in the window glass antenna wire.

      Tech Tips

      Check for continuity at the center of each antenna wire as shown in the illustration.

      Note

      When cleaning the glass, wipe it in the direction of the wire with a soft dry cloth. Take care not to damage the wire. Do not use detergents or glass cleaners with abrasive ingredients. When measuring resistance, wrap a piece of tin foil around the tip of each probe and press the foil against the wire with your finger as shown in the illustration.

      OK
      There is continuity in the window glass antenna wire.

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE)

   OK

5. INSPECT RADIO RECEIVER ASSEMBLY

   
   

   1. 

      Disconnect the RA radio 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 Power switch on (ACC), radio switch on and FM or AM selected 11 to 14 V

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

6. CHECK VEHICLE TYPE

   
   

   1. Check the vehicle type.

      Result
      Result Proceed to w/ Telematics Transceiver for G-BOOK or w/ DAB Function A Other than above B

   
   

   B

   CHECK NO. 1 ANTENNA CORD SUB-ASSEMBLY Click here

   A

7. CHECK NO. 1 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 Radio Receiver Assembly)

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

   2. Disconnect the antenna connector from the radio receiver assembly.

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

      Standard Resistance

      Tester Connection Condition Specified Condition E-6 - RA-3 (MAIN) Always Below 1 Ω E-6a - RA-4 Always Below 1 Ω E-5 - RA-1 (SUB) Always Below 1 Ω E-5a - RA-2 Always Below 1 Ω E-4 - RA-5 (ANT+) Always Below 1 Ω E-6 - Body ground Always 10 kΩ or higher E-6a - Body ground Always 10 kΩ or higher E-5 - Body ground Always 10 kΩ or higher E-5a - Body ground Always 10 kΩ or higher E-4 - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE NO. 1 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

8. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      *a	Front view of wire harness connector (to No. 4 Antenna Cord Sub-assembly)
      *b	Front view of wire harness connector (to No. 1 Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.

   2. Disconnect the antenna connector from the No. 1 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition D-1 - E-6 Always Below 1 Ω D-1a - E-6a Always Below 1 Ω D-2 - E-5 Always Below 1 Ω D-2a - E-5a Always Below 1 Ω D-3 - E-4 Always Below 1 Ω D-1 - Body ground Always 10 kΩ or higher D-1a - Body ground Always 10 kΩ or higher D-2 - Body ground Always 10 kΩ or higher D-2a - Body ground Always 10 kΩ or higher D-3 - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

9. CHECK NO. 4 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      *a	Front view of wire harness connector (to No. 5 Antenna Cord Sub-assembly)
      *b	Front view of wire harness connector (to No. 2 Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 5 antenna cord sub-assembly.

   2. Disconnect 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 C-1 - D-1 Always Below 1 Ω C-1a - D-1a Always Below 1 Ω C-2 - D-2 Always Below 1 Ω C-2a - D-2a Always Below 1 Ω C-3 - D-3 Always Below 1 Ω C-1 - Body ground Always 10 kΩ or higher C-1a - Body ground Always 10 kΩ or higher C-2 - Body ground Always 10 kΩ or higher C-2a - Body ground Always 10 kΩ or higher C-3 - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE NO. 4 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

10. CHECK NO. 5 ANTENNA CORD SUB-ASSEMBLY

    
    
    1. 

       *a	Front view of wire harness connector (to Rear Spoiler Sub-assembly)
       *b	Front view of wire harness connector (to No. 1 Amplifier Antenna Assembly)
       *c	Front view of wire harness connector (to No. 4 Antenna Cord Sub-assembly)

       Disconnect the antenna connector from the rear spoiler sub-assembly.

    2. Disconnect the antenna connector from the No. 1 amplifier antenna assembly.

    3. Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.

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

       Standard Resistance

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

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE NO. 5 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

11. CHECK NO. 1 AMPLIFIER ANTENNA ASSEMBLY

    
    

    1. Replace the No. 1 amplifier antenna assembly with a new or known good one.

       Click here

       OK
       Radio broadcasts can be received normally.

       Result
       Proceed to OK NG

    
    

    OK

    END (NO. 1 AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

12. CHECK REAR SPOILER SUB-ASSEMBLY

    
    

    1. Replace the rear spoiler sub-assembly with a new or known good one.

       Click here

       OK
       Radio broadcasts can be received normally.

       Result
       Proceed to OK NG

    
    

    OK

    END (REAR SPOILER SUB-ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

13. CHECK NO. 1 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 Radio Receiver Assembly)

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

    2. Disconnect the antenna connector from the radio receiver assembly.

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

       Standard Resistance

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

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE NO. 1 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

14. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

    
    
    1. 

       *a	Front view of wire harness connector (to No. 3 Antenna Cord Sub-assembly)
       *b	Front view of wire harness connector (to No. 4 Antenna Cord Sub-assembly)

       Disconnect the antenna connector from the No. 4 antenna cord sub-assembly.

    2. Disconnect the antenna connector from the No. 1 antenna cord sub-assembly.

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

       Standard Resistance
       Tester Connection Condition Specified Condition D-1 - E-3 Always Below 1 Ω D-1a - E-3a Always Below 1 Ω D-2 - E-4 Always Below 1 Ω D-2a - E-4a Always Below 1 Ω D-3 - E-1 Always Below 1 Ω D-1 - Body ground Always 10 kΩ or higher D-1a - Body ground Always 10 kΩ or higher D-2 - Body ground Always 10 kΩ or higher D-2a - Body ground Always 10 kΩ or higher D-3 - Body ground Always 10 kΩ or higher

       Result
       Proceed to OK NG

    
    

    OK

    GO TO STEP 9 Click here

    NG

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here