Inspection Procedure

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

      OK: The radio automatic station search function works properly. 

NG: Go to step 2 

OK: REPLACE RADIO RECEIVER  (See REMOVAL  )

1. Check optional components (sunshade film, telephone antenna, etc.).
   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 any optional components installed by the customer without his or her consent.

NG: Go to step 3 

OK: REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) 

1. Preparation for check
   1. Remove the antenna plug from the radio receiver assembly
2. 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's antenna jack and check that noise can be heard from the speaker
      Fig 1: Identifying Antenna Plug

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Noise occurs. 

NG: REPLACE RADIO RECEIVER  (See REMOVAL  )

OK: 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

   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 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. 

Fig 2: Pressing Foil Against Wire
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR GLASS ANTENNA  (See REPAIR  )

OK: Go to next step 

1. Disconnect the radio receiver assembly connector
   Fig 3: Identifying Radio Receiver Assembly Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the antenna amplifier connector
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   J66-13 (ANT) - J67-1 (B)	Always	Below 1 Ω
   J66-13 (ANT) - Body ground	Always	10 kΩ or higher

Fig 4: Identifying Antenna Amplifier Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the radio receiver connector.
2. Measure the voltage according to the value(s) in the table below

   Standard Voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   J67-1 (B) - Body ground	Engine switch on (IG) Radio switch ON	11 to 14 V

Fig 5: Identifying Antenna Amplifier Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RADIO RECEIVER  (See REMOVAL  )

OK: Go to next step 

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

   Standard resistance: Below 1 Ω 

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

   Standard resistance: 10 kΩ or higher 

NG: REPLACE ANTENNA CORD  (See REMOVAL  )

OK: Go to next step 

1. Replace the antenna amplifier and check if radio broadcasts can be received normally (See AMPLIFIER ANTENNA  ).

   OK: Radio broadcasts can be received. 

NG: REPLACE RADIO RECEIVER  (See REMOVAL  )

OK: NORMAL OPERATION