Radio Broadcast cannot be Received (Bad Reception): Procedure

1. Perform the auto-search of the radio and check that it functions normally.

   OK

   Radio auto-search functions normally.

NG → See step   2 

OK → See step   16 

1. Check if the telephone antenna, and other optional components are installed.

   OK

   Optional component(s) installed.

NG → See step   3 

OK → EFFECT FROM OPTIONAL COMPONENTS 

1. Remove the antenna plug of the radio receiver assembly.
   Fig 1: Locating Antenna Plug Of The Radio Receiver Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ACC with the radio receiver assembly connector connected.
3. Turn on the radio and select the AM mode.
4. Place the tip of a screwdriver or a piece of metal, such as a thin wire, on the antenna jack of the radio receiver assembly. Check that noise is heard from the speakers.

   OK

   Noise occurs.

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Radio Receiver Assembly)

5. Reconnect the antenna plug of the radio receiver assembly.

NG → See step   16 

OK: Go to next step 

1. Check the vehicle specifications.
   RESULT
   
   

   Result	Proceed to
   Pole Antenna Type	A
   Glass Antenna Type	B

B → See step   8 

A: Go to next step 

1. Disconnect the fender antenna assembly connector.
   Fig 2: Checking Antenna Cord Sub-Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. With the ignition switch to ON, turn on the radio and select the AM mode.
3. Place the tip of a screwdriver against the metal terminal of the antenna cord sub-assembly and check that noise is heard from the speakers.

   OK

   Noise occurs.

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Fender Antenna Assembly)

4. Reconnect the fender antenna assembly connector.

NG → See step   17 

OK: Go to next step 

1. Check that the pull top antenna pole sub-assembly is securely installed.

   OK

   The pull top antenna pole sub-assembly is installed properly.

NG → CHECK AND REPLACE PULL TOP ANTENNA POLE SUB-ASSEMBLY 

OK: Go to next step 

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

   OK

   Radio broadcast can be received.

NG → See step   16 

OK → END 

1. Disconnect the D133 radio receiver assembly connector.
   Fig 3: Radio Receiver Assembly Connector End View

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D133-13 (ANT) - 1	Always	Below 1 Ω
   D133-13 (ANT) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio Receiver Assembly)
   *2	Front view of No. 2 antenna cord sub-assembly connector (to Amplifier Antenna Assembly)

NG → See step   13 

OK: Go to next step 

1. Reconnect the D133 radio receiver assembly connector.
   Fig 4: Measuring Voltage Of Radio Receiver Assembly

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D133-13 (ANT) - D133-20 (GND)	During radio (AM) reception	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Radio Receiver Assembly)

NG → See step   16 

OK: Go to next step 

1. Disconnect the amplifier antenna assembly connector.
   Fig 5: Identifying Amplifier Antenna Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. With the ignition switch to ON, turn on the radio and select the AM mode.
3. Place the tip of a screwdriver against the metal terminal of the No. 2 antenna cord sub-assembly and check that noise is heard from the speakers.

   OK

   Noise occurs.

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of No. 2 antenna cord sub-assembly connector (to Amplifier Antenna Assembly)

4. Reconnect the amplifier antenna assembly connector.

NG → See step   15 

OK: Go to next step 

1. Check for continuity of the antenna.
   Fig 6: Checking For Continuity Of Each Antenna Wire

   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 aluminum 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 antenna.

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR GLASS ANTENNA 

OK: Go to next step 

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

   OK

   Radio broadcasts can be received.

NG → See step   16 

OK → END 

1. Disconnect the D133 radio receiver assembly connector.
   Fig 7: Radio Receiver Assembly Connector End View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the No. 2 antenna cord sub-assembly (antenna cord sub-assembly side) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D133-13 (ANT) - 1	Always	Below 1 Ω
   D133-13 (ANT) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio Receiver Assembly)
   *2	Front view of antenna cord sub-assembly connector (to No. 2 Antenna Cord Sub-Assembly)

NG → See step   14 

OK → See step   18 

1. Disconnect the D133 radio receiver assembly connector.
   Fig 8: Measuring Resistance Of Radio Receiver & Antenna Cord

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the D65 antenna cord sub-assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D133-13 (ANT) - D65-1 (B)	Always	Below 1 Ω
   D133-13 (ANT) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Radio Receiver Assembly)
   *2	Front view of wire harness connector (to Antenna Cord Sub-Assembly)

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK → See step   17 

1. Disconnect the No. 2 antenna cord sub-assembly (antenna cord sub-assembly side) connector.
   Fig 9: Identifying Amplifier Antenna Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. With the ignition switch to ON, turn on the radio and select the AM mode.
3. Place the tip of a screwdriver against the metal terminal of the antenna cord sub-assembly and check that noise is heard from the speakers.

   OK

   Noise occurs.

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of antenna cord sub-assembly connector (to No. 2 Antenna Cord Sub-Assembly)

NG → See step   17 

OK → See step   18