Radio Broadcast cannot be Received or Poor Reception: Procedure

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 → See step   9 

A: Go to next step 

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

   Result

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

   NOTE:

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

B → REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTE ABOVE) 

A: Go to next step 

1. Preparation for check
   Fig 1: Identifying Antenna Connector & Radio Receiver Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the antenna connector from the radio and display receiver assembly.
2. Check for noise
   1. Turn the engine switch on (ACC) with the radio and display 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 and display receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK

      Noise can be heard from the speakers.

NG → See step   9 

OK: Go to next step 

1. Check for continuity in the window glass antenna wire.
   Fig 2: Checking Window Glass Antenna Wire For Continuity

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   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.

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   10 

OK: Go to next step 

1. Disconnect the RA radio and display receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.
   Fig 3: Measuring Voltage Of Radio Receiver Assembly With Connector End View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

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

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Radio and Display Receiver Assembly)

NG → See step   9 

OK: Go to next step 

1. Replace the antenna cord sub-assembly and check if radio broadcasts can be received normally. Refer to REMOVAL .

   OK

   Radio broadcasts can be received normally.

NG → See step   7 

OK → NORMAL OPERATION 

1. Replace the No. 2 antenna cord sub-assembly and check if radio broadcasts can be received normally. Refer to REMOVAL .

   OK

   Radio broadcasts can be received normally.

NG → See step   8 

OK → NORMAL OPERATION 

1. Replace the amplifier antenna assembly and check if radio broadcasts can be received normally. Refer to REMOVAL .

   OK

   Radio broadcasts can be received normally.

NG → See step   9 

OK → NORMAL OPERATION