Inspection Procedure

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

      OK: The radio's automatic station search function works properly. 

OK: REPLACE RADIO RECEIVER ASSEMBLY 

NG: Go to Next Step 

1. Disconnect the radio receiver assembly connector.
   Fig 1: Identifying R7 Radio Receiver Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value (s) in the table below.

   Standard voltage 

   STANDARD VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   ANT - Body ground	Ignition SW ON Radio SW ON	10 to 14 V

NG: REPLACE RADIO RECEIVER ASSEMBLY 

OK: Go to Next Step 

1. Check optional components (sun-shade film, telephone antenna, etc.).
   1. Check if any optional components, such as sunshade film or telephone antenna that may decrease reception capacity, are installed.

      OK: Optional components are Installed. 

      NOTE: Do not remove any optional components installed by the customer without his or her consent.

OK: REMOVE AND RECHECK OPTIONAL COMPONENTS (SEE NOTICE ABOVE) 

NG: Go to Next Step 

1. Preparation for check
   1. Remove the antenna plug from the radio receiver assembly.
      Fig 2: Locating Antenna Plug From Radio And Navigation Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check for noise
   1. Turn the ignition switch to the ACC position with the radio receiver assembly connector connected.
   2. Turn the radio on and put into AM mode.
   3. Place a screwdriver, thin wire, or other metal object on the radio receiver's antenna jack and check that noise can be heard from the speaker.

      OK: Noise occurs. 

NG: REPLACE RADIO RECEIVER ASSEMBLY 

OK: Go to Next Step 

1. Choose type to be inspected.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Glass printed type antenna	A
   Roof type antenna	B

B: Go to step  9

A: Go to Next Step 

1. Check for continuity of the antenna.

   HINT:

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

   Fig 3: Checking Continuity At Center Of Antenna Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 voltage, wrap a piece of tin foil around the tip of the negative probe and press the foil against the wire with your finger, as shown in the illustration.

   OK: There is continuity in the antenna. 

NG: REPAIR GLASS ANTENNA 

OK: Go to Next Step 

1. Remove the antenna plug of the radio receiver assembly and antenna assembly.
2. Measure the resistance between the antenna assembly and radio receiver assembly to check for an open circuit in the antenna cord sub-assembly.

   Standard resistance: Below 1 Ω 

3. Measure the resistance between the antenna cord sub-assembly and body ground to check for a short circuit in the antenna cord sub-assembly.

   Standard resistance: 10 kΩ or higher 

NG: REPLACE ANTENNA CODE SUB-ASSEMBLY 

OK: Go to Next Step 

1. Replace the antenna amplifier and check that it operates normally.

   OK: The antenna amplifier operates normally. 

NG: REPLACE RADIO RECEIVER ASSEMBLY 

OK: END 

1. Check that the antenna is securely installed.

   OK: The antenna is installed properly. 

OK: Go to step  6

NG: REPLACE ANTENNA ASSEMBLY