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   3 

A: Go to next step 

1. Check optional components (sun-shade 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.

      Result

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

      NOTE:

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

B → See step   4 

A → REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) 

1. Preparation for check
   1. Remove the roof antenna pole sub-assembly from the amplifier antenna assembly.
2. Check for noise
   1. Turn the power switch on (ACC) with the navigation 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 amplifier antenna threaded installation portion for the roof antenna pole sub-assembly and check that noise can be heard from the speakers.

      Result

      Result	Proceed to
      Noise does not occur	A
      Noise occurs	B

B → See step   10 

A: Go to next step 

1. Preparation for check
   Fig 1: Locating Radio Receiver Antenna Plug

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Remove the antenna plug from the navigation receiver assembly.
2. Check for noise
   1. Turn the power switch on (ACC) with the navigation 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 navigation receiver assembly antenna jack and check that noise can be heard from the speaker.

      OK

      Noise occurs.

NG → See step   11 

OK: Go to next step 

1. Disconnect the L40 navigation receiver assembly connector (w/ "Bluetooth" Audio System).
   Fig 2: Identifying L40 Navigation Receiver Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the L34 navigation receiver assembly connector (w/o "Bluetooth" Audio System).
   Fig 3: Identifying L34 Navigation Receiver Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the L36 antenna amplifier assembly connector.
   Fig 4: Identifying L36 Antenna Amplifier Assembly Connector

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L40-13 (ANT) - L36-2 (B)*4	Always	Below 1 Ω
   L40-13 (ANT) - Body ground*4	Always	10 kΩ or higher
   L34-8 (ANT) - L36-2 (B)*5	Always	Below 1 Ω
   L34-8 (ANT) - Body ground*5	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Navigation Receiver Assembly)*4
   *2	Front view of wire harness connector (to Navigation Receiver Assembly)*5
   *3	Front view of wire harness connector (to Antenna Amplifier Assembly)

   • *4: w/ "Bluetooth" Audio System
   • *5: w/o "Bluetooth" Audio System

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the L40*2 or L34*3 navigation receiver assembly connector.
   Fig 5: Identifying L36 Antenna Amplifier Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the L36 antenna amplifier assembly connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L36-2 (B) - Body ground	Power switch on (IG) Radio switch on	8 V or higher

   TEXT IN ILLUSTRATION
   
   

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

   • *2: w/ "Bluetooth" Audio System
   • *3: w/o "Bluetooth" Audio System

NG → See step   12 

OK: Go to next step 

1. Remove the antenna plug of the navigation receiver assembly and antenna.
2. Measure the resistance between the antenna and navigation receiver assembly 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 → See step   13 

OK: Go to next step 

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

   OK

   Radio broadcasts can be received.

NG → See step   14 

OK → NORMAL OPERATION