Toyota CH-R Service Manual: Radio Broadcast cannot be Received or Poor Reception

Toyota CH-R Service Manual / Audio / Video / Audio And Visual System(for Radio Receiver Type) / Radio Broadcast cannot be Received or Poor Reception

PROCEDURE

1.

CHECK RADIO RECEIVER ASSEMBLY

(a) Check the radio automatic station search function.

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

Result

Proceed to

Automatic station search function does not stop

A

Automatic station search function stops on a station

B
B

REPLACE RADIO RECEIVER ASSEMBLY

A

2.

CHECK OPTIONAL COMPONENTS

(a) Check if any optional components that may decrease reception capacity, such as sunshade film, are installed.

Result

Proceed to

Optional components are installed

A

Optional components are not installed

B

NOTICE:

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

A

REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)
B

3.

CHECK RADIO RECEIVER ASSEMBLY

(a) Preparation for check

(1) Disconnect the antenna connector from the radio receiver assembly.

(b) Check for noise

(1) Turn the ignition switch to ACC with the radio receiver assembly connectors connected.

(2) Turn the radio receiver assembly on and enter AM mode.

(3) Place a screwdriver, thin wire or other metal object on the radio receiver assembly antenna jack and check that noise can be heard from the speakers.

OK:

Noise occurs.

NG

REPLACE RADIO RECEIVER ASSEMBLY

OK

4.

INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the RA radio receiver assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

RA-5 (ANT+) - Body ground

Ignition switch ACC

Radio switch on and FM or AM selected

11 to 14 V

*a

Component without harness connected

(Radio Receiver Assembly)
NG

REPLACE RADIO RECEIVER ASSEMBLY

OK

5.

REPLACE ANTENNA CORD SUB-ASSEMBLY

(a) Replace the antenna cord sub-assembly and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END
NG

6.

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

(a) Replace the No. 2 antenna cord sub-assembly and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END
NG

7.

REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY

(a) Replace the No. 3 antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END
NG

8.

REPLACE ROOF ANTENNA ASSEMBLY

(a) Replace the roof antenna assembly and check if radio broadcasts can be received normally.

Click here

OK:

Radio broadcasts can be received normally.

OK

END
NG

REPLACE RADIO RECEIVER ASSEMBLY

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