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

WIRING DIAGRAM

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.

   
   

   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 installed.

      Note

      Do not remove optional components without permission of the customer.

   
   

   OK

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

   NG

3. CHECK RADIO RECEIVER ASSEMBLY

   
   

   1. 

      Remove the antenna connector from the radio receiver assembly.

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

   3. Turn on the radio and turn 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 occurs.

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

4. INSPECT QUARTER WINDOW ASSEMBLY (WINDOW GLASS ANTENNA WIRE)

   
   

   1. Inspect the quarter window assembly (window glass antenna wire) Click here.

   
   

   NG

   REPAIR QUARTER WINDOW ASSEMBLY Click here

   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 Ignition switch ACC, radio switch on 11 to 14 V

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

6. CHECK ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      Text in Illustration

      *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)

      Disconnect the antenna connector from the radio receiver 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 RA-3 (MAIN) - 4 Always Below 1 Ω RA-5 (ANT+) - 2 Always Below 1 Ω RA-3 (MAIN) - Body ground Always 10 kΩ or higher RA-5 (ANT+) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

   OK

7. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      Text in Illustration

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

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

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

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

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

   
   

   NG

   REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

8. CHECK NO. 1 AMPLIFIER ANTENNA ASSEMBLY

   
   

   1. Replace the No. 1 amplifier antenna assembly with a known good one and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

   
   

   OK

   END (NO. 1 AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here