NAVIGATION SYSTEM Speaker Circuit (Independent Amplifier)

DESCRIPTION

The radio and display receiver assembly and stereo component amplifier assembly send sound signals to the speakers.

WIRING DIAGRAM

A00OQM6E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Malfunction in front speaker area A
      Malfunction in rear speaker area B

    B

    CHECK SPEAKER Click here

    A

  2. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Front No. 1 speaker assembly LH/RH A
      Front No. 2 speaker assembly LH/RH B
      Front No. 3 speaker assembly C

    B

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    C

    INSPECT FRONT NO. 3 SPEAKER ASSEMBLY Click here

    A

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

      Disconnect the E1*1 and/or E11*2 front No. 1 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 2 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the H20 stereo component amplifier assembly connector.

    2. Disconnect the E1*1 and/or E11*2 front No. 1 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
      H20-3 (WFR+) - E1-1 Always Below 1 Ω
      H20-8 (WFR-) - E1-2
      H20-3 (WFR+) - Body ground Always 10 kΩ or higher
      H20-8 (WFR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      H20-4 (WFL+) - E11-1 Always Below 1 Ω
      H20-11 (WFL-) - E11-2
      H20-4 (WFL+) - Body ground Always 10 kΩ or higher
      H20-11 (WFL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the H20 stereo component amplifier assembly connector.

    2. Disconnect the D52*1 and/or D53*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
      H20-2 (RR+) - D52-2 (TWR+) Always Below 1 Ω
      H20-7 (RR-) - D52-4 (TWR-)
      H20-2 (RR+) - Body ground Always 10 kΩ or higher
      H20-7 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      H20-1 (RL+) - D53-2 (TWL+) Always Below 1 Ω
      H20-6 (RL-) - D53-4 (TWL-)
      H20-1 (RL+) - Body ground Always 10 kΩ or higher
      H20-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. A00OUIZE57
      Text in Illustration
      *A for RH Side
      *B for LH Side

      Disconnect the D52*1 and/or D53*2 front No. 2 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      1 (+) - 2 (TWR+) Always Below 1 Ω
      3 (-) - 4 (TWR-)
      for LH Side
      Tester Connection Condition Specified Condition
      1 (+) - 2 (TWL+) Always Below 1 Ω
      3 (-) - 4 (TWL-)

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

  7. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the speaker with a new or normally functioning one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all speaker connectors to the speakers.

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

      Result
      Result Proceed to
      Malfunction disappears A
      Malfunction does not disappear B

    B

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

    A

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

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


    1. Disconnect the D125 radio and display receiver assembly connector.

    2. Disconnect the D52*1 and/or D53*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
      D125-1 (FR+) - D52-1 (+) Always Below 1 Ω
      D125-5 (FR-) - D52-3 (-)
      D125-1 (FR+) - Body ground Always 10 kΩ or higher
      D125-5 (FR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D125-2 (FL+) - D53-1 (+) Always Below 1 Ω
      D125-6 (FL-) - D53-3 (-)
      D125-2 (FL+) - Body ground Always 10 kΩ or higher
      D125-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  9. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. A00OW1VE23

      Disconnect the D51 front No. 3 speaker assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (CTR+) - 1 (CTR-) Always 40 Ω
      4 (+) - 3 (-) Always 40 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)


    1. Disconnect the D125 radio and display receiver assembly connector.

    2. Disconnect the D51 front No. 3 speaker assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D125-1 (FR+) - D51-4 (+) Always Below 1 Ω
      D125-5 (FR-) - D51-3 (-)
      D125-2 (FL+) - D51-2 (CTR+)
      D125-6 (FL-) - D51-1 (CTR-)
      D125-1 (FR+) - Body ground Always 10 kΩ or higher
      D125-5 (FR-) - Body ground
      D125-2 (FL+) - Body ground
      D125-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  11. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Rear No. 1 speaker assembly A
      Rear No. 2 speaker assembly B

    B

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    A

  12. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

      Disconnect the F11*1 and/or F12*2 rear No. 1 speaker assembly connector.

      *1: for RH Side

      *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 4 Ω

    NG

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (REAR NO. 1 SPEAKER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)

    *1: for RH Side

    *2: for LH Side


    1. Disconnect the F11*1 and/or F12*2 rear No. 1 speaker assembly connector.

    2. Disconnect the F3*1 and/or F8*2 rear No. 2 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
      F11-1 - F3-3 (+TW) Always Below 1 Ω
      F11-2 - F3-1 (-TW)
      F11-1 - Body ground Always 10 kΩ or higher
      F11-2 - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      F12-1 - F8-3 (+TW) Always Below 1 Ω
      F12-2 - F8-1 (-TW)
      F12-1 - Body ground Always 10 kΩ or higher
      F12-2 - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

  14. REPLACE REAR NO. 2 SPEAKER ASSEMBLY


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

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all speaker connectors to the speakers.

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

      Result
      Result Proceed to
      Malfunction disappears A
      Malfunction does not disappear B

    B

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY) Click here

    A

    END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

  15. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the D126 radio and display receiver assembly connector.

    2. Disconnect the F3*1 and/or F8*2 rear 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
      D126-1 (RR+) - F3-4 (+) Always Below 1 Ω
      D126-3 (RR-) - F3-2 (-)
      D1262-1 (RR+) - Body ground Always 10 kΩ or higher
      D126-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D126-2 (RL+) - F8-4 (+) Always Below 1 Ω
      D126-6 (RL-) - F8-2 (-)
      D126-2 (RL+) - Body ground Always 10 kΩ or higher
      D126-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here