Radio Broadcast cannot be Received or Poor Reception [08/2015 - 08/2021]: Procedure

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

   OK

   Automatic station search function stops on a station.

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021] )

Result: 

NG 

See step  2

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 optional components without permission of the customer.

Result: 

OK 

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) 

Result: 

NG 

See step  3

1. Remove the antenna connector from the multi-media module receiver assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the engine switch on (ACC) with the multi-media module receiver assembly connector connected.
3. Turn on the radio and turn into AM mode.
4. Place a screwdriver, thin wire or other metal object on the multi-media module receiver assembly antenna jack and check that noise can be heard from the speakers.

   OK

   Noise occurs.

Result: 

NG 

REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2021] )

Result: 

OK 

See step  4

1. Inspect the quarter window assembly (window glass antenna wire) (Refer to PROCEDURE - Step 1 ).

Result: 

NG 

REPAIR WINDOW GLASS ANTENNA WIRE 

(Refer to REPAIR [08/2015 - ] )

Result: 

OK 

See step  5

1. Disconnect the H14 multi-media module receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   5 (ANT+) - Body ground	Engine switch on (ACC) Radio switch on	11 to 14 V

Result: 

NG 

REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2021] )

Result: 

OK 

See step  6

1. Disconnect the antenna connector from the multi-media module receiver assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the antenna connector from the holder antenna assembly.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H14-3 (RMAIN2) - 3	Always	Below 1 Ω
   H14-5 (ANT+) - 1	Always	Below 1 Ω
   H14-3 (RMAIN2) - Body ground	Always	10 kΩ or higher
   H14-5 (ANT+) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Multi-media Module Receiver Assembly)
   *b	Front view of wire harness connector (to Holder Antenna Assembly)

Result: 

NG 

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

OK 

See step  7

1. Replace the holder antenna assembly and check if radio broadcasts can be received normally (Refer to REMOVAL [08/2015 - ] ).

   OK

   Radio broadcasts can be received.

Result: 

OK 

END (HOLDER ANTENNA ASSEMBLY IS DEFECTIVE) 

Result: 

NG 

REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2021] )