NAVIGATION SYSTEM(for SD) Radio Broadcast cannot be Received or Poor Reception

DTC Code DTC Name
Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

E334245E05

CAUTION / NOTICE / HINT

Note:

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

Click here

PROCEDURE

  1. CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY

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

      OK

      Automatic station search function stops on a station.

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

  2. CHECK OPTIONAL COMPONENTS

    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

    Proceed to

    OK

    NG
    OK

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

    NG

  3. CHECK NAVIGATION RECEIVER ASSEMBLY (ANTENNA)

    1. E276819

      Remove the antenna connector from the navigation receiver assembly.

    2. Turn the ignition switch to ACC with the navigation 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 navigation receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK

      Noise occurs.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY

    Click here

    OK

  4. INSPECT NAVIGATION RECEIVER ASSEMBLY

    1. Disconnect the RA navigation receiver assembly connector.

    2. E277921E01

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      5 (ANT+) - Body ground

      Ignition switch ACC, radio switch on and FM or AM selected

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY

    Click here

    OK

  5. CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY

    1. E333592C02

      *a

      Front view of wire harness connector

      (to No. 1 Amplifier Antenna Assembly)

      *b

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 1 amplifier antenna assembly.

    2. Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      2 - 1

      Always

      Below 1 Ω

      1 - 3

      Always

      Below 1 Ω

      2 - Body ground

      Always

      10 kΩ or higher

      1 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY

    Click here

    OK

  6. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

    1. E288795C02

      *a

      Front view of wire harness connector

      (to No. 3 Antenna Cord Sub-assembly)

      *b

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the No. 3 antenna cord sub-assembly.

    2. Disconnect the antenna connector from the antenna cord sub-assembly.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 - 2

      Always

      Below 1 Ω

      3 - 3

      Always

      Below 1 Ω

      1 - Body ground

      Always

      10 kΩ or higher

      3 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

    Click here

    OK

  7. CHECK ANTENNA CORD SUB-ASSEMBLY

    1. E288797C03

      *a

      Front view of wire harness connector

      (to No. 2 Antenna Cord Sub-assembly)

      *b

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

      Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.

    2. Disconnect the antenna connector from the navigation receiver assembly.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      2 - RA-3 (MAIN)

      Always

      Below 1 Ω

      3 - RA-5 (ANT+)

      Always

      Below 1 Ω

      2 - Body ground

      Always

      10 kΩ or higher

      3 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY

    Click here

    OK

  8. CHECK NO. 1 AMPLIFIER ANTENNA ASSEMBLY

    1. Replace the No. 1 amplifier antenna assembly and check if radio broadcasts can be received normally.

      Click here

      OK

      Radio broadcasts can be received normally.

    Result

    Proceed to

    OK

    NG
    OK

    END (NO. 1 AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY

    Click here