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

for Preparation Click here


INSPECTION PROCEDURE

1.CHECK RADIO RECEIVER ASSEMBLY

  1. Check the radio automatic station search function.

    1. Check the radio automatic station search function by activating it.

      Result:

      Result
      		Proceed to
      Automatic station search function does not stop
      		A
      Automatic station search function stops on a station
      		B


B
REPLACE RADIO RECEIVER ASSEMBLY (Click here)
A


2.CHECK OPTIONAL COMPONENTS

  1. Check if any optional components that may decrease reception capacity, such as sunshade film, are installed.

    Result:

    Result
    		Proceed to
    Optional components are installed
    		A
    Optional components are not installed
    		B

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


B
Go to step 3
A

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) 

3.CHECK RADIO RECEIVER ASSEMBLY


    E187251

  1. Preparation for check

    1. Remove the antenna connector from the radio receiver assembly.

  1. Check for noise

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

    2. Turn the radio on and tune into 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 occurs.


NG
REPLACE RADIO RECEIVER ASSEMBLY (Click here)
OK


4.CHECK WINDOW GLASS ANTENNA WIRE


    E111994E14

  1. Check for continuity of the window glass antenna wire.

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

    NOTICE:
    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.
    Text in Illustration 
    *a
    		Tester Probe
    *b
    		Antenna Wire
    *c
    		Tin Foil


NG
REPAIR WINDOW GLASS ANTENNA WIRE (Click here)
OK


5.INSPECT RADIO RECEIVER ASSEMBLY

  1. Disconnect the RA1 radio receiver assembly connector.



    E188455E21

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    RA1-5 (ANT+) - Body ground
    		Engine switch on (ACC)
    Radio switch on and AM or FM selected
    		11 to 14 V
    Text in Illustration 
    *a
    		Component without harness connected
    (Radio Receiver Assembly)


NG
REPLACE RADIO RECEIVER ASSEMBLY (Click here)
OK


6.REPLACE ANTENNA CORD SUB-ASSEMBLY

  1. Replace the antenna cord sub-assembly and check if radio broadcasts can be received normally (Click here).

    OK:
    Radio broadcasts can be received normally.


NG
Go to step 7
OK

NORMAL OPERATION 

7.CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

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

  1. Measure the resistance of the No. 2 antenna cord sub-assembly to check for an open circuit in the No. 2 antenna cord sub-assembly.

    Standard Resistance:
    Below 1 Ω

  1. Measure the resistance between the No. 2 antenna cord sub-assembly and body ground to check for a short circuit in the No. 2 antenna cord sub-assembly.

    Standard Resistance:
    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. 1amplifier antenna assembly and check if radio broadcasts can be received normally (Click here).

    OK:
    Radio broadcasts can be received normally.


NG
REPLACE RADIO RECEIVER ASSEMBLY (Click here)
OK

NORMAL OPERATION