AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Speaker Circuit

DTC Code DTC Name
Speaker Circuit

DESCRIPTION

The radio and display receiver assembly sends sound signals to the speakers.

WIRING DIAGRAM

E236927E19

PROCEDURE

  1. CHECK SPEAKER

    1. Check the malfunctioning speakers.

      Table 1. Result

      Result

      Proceed to

      Malfunction in front speaker area

      A

      Malfunction in rear speaker area

      B

    INSPECT REAR SPEAKER ASSEMBLYClick here

  2. CHECK FRONT SIDE SPEAKER

    1. Check the malfunctioning speakers.

      Table 2. Result

      Result

      Proceed to

      Front No. 2 speaker assembly

      A

      Front No. 1 speaker assembly

      B

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLYClick here

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

    1. Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one (Click here).

    2. Check that the malfunction disappears.

      Tip:

      • Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Table 3. Result

      Result

      Proceed to

      Malfunction disappears

      A

      Malfunction does not disappear

      B

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)

    1. Disconnect the H107 radio and display receiver assembly connector.

    2. Disconnect the H41*1 and/or H42*2 front No. 2 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance

      for RH Side

      Tester Connection

      Condition

      Specified Condition

      H107-1 (FR+) - H41-4 (+)

      Always

      Below 1 Ω

      H107-5 (FR-) - H41-2 (-)

      H107-1 (FR+) - Body ground

      Always

      10 kΩ or higher

      H107-5 (FR-) - Body ground

      for LH Side

      Tester Connection

      Condition

      Specified Condition

      H107-2 (FL+) - H42-4 (+)

      Always

      Below 1 Ω

      H107-6 (FL-) - H42-2 (-)

      H107-2 (FL+) - Body ground

      Always

      10 kΩ or higher

      H107-6 (FL-) - Body ground

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

    1. Remove the front No. 1 speaker assembly (Click here).

    2. Inspect the front No. 1 speaker assembly (Click here).

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

    (Click here)

  6. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)

    *1: for RH Side

    *2: for LH Side

    1. Disconnect the H41*1 and/or H42*2 front No. 2 speaker assembly connector.

    2. Disconnect the J12*1 and/or K12*2 front No. 1 speaker assembly connector.

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

      Standard Resistance

      for RH Side

      Tester Connection

      Condition

      Specified Condition

      H41-3 (TWR+) - J12-1

      Always

      Below 1 Ω

      H41-1 (TWR-) - J12-2

      H41-3 (TWR+) - Body ground

      Always

      10 kΩ or higher

      H41-1 (TWR-) - Body ground

      for LH Side

      Tester Connection

      Condition

      Specified Condition

      H42-3 (TWL+) - K12-1

      Always

      Below 1 Ω

      H42-1 (TWL-) - K12-2

      H42-3 (TWL+) - Body ground

      Always

      10 kΩ or higher

      H42-1 (TWL-) - Body ground

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT REAR SPEAKER ASSEMBLY

    1. Remove the rear speaker assembly (Click here).

    2. Inspect the rear speaker assembly (Click here).

    REPLACE REAR SPEAKER ASSEMBLY

    (Click here)

  8. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)

    1. Disconnect the H108 radio and display receiver assembly connector.

    2. Disconnect the L5*1 and/or M5*2 rear speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance

      for RH Side

      Tester Connection

      Condition

      Specified Condition

      H108-1 (RR+) - L5-1

      Always

      Below 1 Ω

      H108-3 (RR-) - L5-2

      H108-1 (RR+) - Body ground

      Always

      10 kΩ or higher

      H108-3 (RR-) - Body ground

      for LH Side

      Tester Connection

      Condition

      Specified Condition

      H108-2 (RL+) - M5-1

      Always

      Below 1 Ω

      H108-6 (RL-) - M5-2

      H108-2 (RL+) - Body ground

      Always

      10 kΩ or higher

      H108-6 (RL-) - Body ground

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR