AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly detects the short and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver) or speakers.

WIRING DIAGRAM

A01H1TTE05
A01H1XCE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - SPEAKERS AND DCM [TELEMATICS TRANSCEIVER])


    • *1: for RH Side

    • *2: for LH Side

    • *3: w/ Emergency Call Switch

    • *4: w/o Emergency Call Switch


    1. Disconnect the R96 and R95 stereo component amplifier assembly connectors.

    2. Disconnect the N4*1 and/or N12*2 front No. 1 speaker assembly connector.

    3. Disconnect the L84*1 and/or L9*2 front No. 2 speaker assembly connector.

    4. Disconnect the M1 front No. 3 speaker assembly connector.

    5. Disconnect the O1*1 and/or O12*2 rear No. 2 speaker assembly connector.

    6. Disconnect the Q3*1 and/or Q8*2 rear No. 3 speaker assembly connector.

    7. Disconnect the R20 floor stereo component speaker assembly connector.

    8. Disconnect the R18*1 and/or S18*2 rear header speaker assembly connector.

    9. Disconnect the L127 DCM (telematics transceiver) connector.*3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R95-2 (TMUT) - L127-9 (MUTE)*3 Always Below 1 Ω
      R95-5 (WFR+) - N4-1 Always Below 1 Ω
      R95-20 (WFR-) - N4-2 Always Below 1 Ω
      R95-4 (WFL+) - N12-1 Always Below 1 Ω
      R95-19 (WFL-) - N12-2 Always Below 1 Ω
      R95-13 (FR+) - L127-2 (SPI+)*3 Always Below 1 Ω
      R95-28 (FR-) - L127-3 (SPI-)*3 Always Below 1 Ω
      R95-13 (FR+) - L84-1*4 Always Below 1 Ω
      R95-28 (FR-) - L84-2*4 Always Below 1 Ω
      R95-12 (FL+) - L9-1 Always Below 1 Ω
      R95-27 (FL-) - L9-2 Always Below 1 Ω
      R95-7 (CTR+) - M1-1 Always Below 1 Ω
      R95-22 (CTR-) - M1-2 Always Below 1 Ω
      R96-4 (RR+) - O1-1 Always Below 1 Ω
      R96-10 (RR-) - O1-2 Always Below 1 Ω
      R96-3 (RL+) - O12-1 Always Below 1 Ω
      R96-9 (RL-) - O12-2 Always Below 1 Ω
      R95-15 (TWR+) - Q3-1 (+TW) Always Below 1 Ω
      R95-30 (TWR-) - Q3-2 (-TW) Always Below 1 Ω
      R95-14 (TWL+) - Q8-1 (+TW) Always Below 1 Ω
      R95-29 (TWL-) - Q8-2 (-TW) Always Below 1 Ω
      R95-6 (WF1+) - R20-1 (WF1+) Always Below 1 Ω
      R95-21 (WF1-) - R20-4 (WF1-) Always Below 1 Ω
      R96-2 (SR+) - R18-1 Always Below 1 Ω
      R96-6 (SR-) - R18-2 Always Below 1 Ω
      R96-1 (SL+) - S18-1 Always Below 1 Ω
      R96-5 (SL-) - S18-2 Always Below 1 Ω
      R95-2 (TMUT) - Body ground*3 Always 10 kΩ or higher
      R95-5 (WFR+) - Body ground Always 10 kΩ or higher
      R95-20 (WFR-) - Body ground Always 10 kΩ or higher
      R95-4 (WFL+) - Body ground Always 10 kΩ or higher
      R95-19 (WFL-) - Body ground Always 10 kΩ or higher
      R95-13 (FR+) - Body ground Always 10 kΩ or higher
      R95-28 (FR-) - Body ground Always 10 kΩ or higher
      R95-12 (FL+) - Body ground Always 10 kΩ or higher
      R95-27 (FL-) - Body ground Always 10 kΩ or higher
      R95-7 (CTR+) - Body ground Always 10 kΩ or higher
      R95-22 (CTR-) - Body ground Always 10 kΩ or higher
      R95-15 (TWR+) - Body ground Always 10 kΩ or higher
      R95-30 (TWR-) - Body ground Always 10 kΩ or higher
      R95-14 (TWL+) - Body ground Always 10 kΩ or higher
      R95-29 (TWL-) - Body ground Always 10 kΩ or higher
      R95-6 (WF1+) - Body ground Always 10 kΩ or higher
      R95-21 (WF1-) - Body ground Always 10 kΩ or higher
      R96-4 (RR+) - Body ground Always 10 kΩ or higher
      R96-10 (RR-) - Body ground Always 10 kΩ or higher
      R96-3 (RL+) - Body ground Always 10 kΩ or higher
      R96-9 (RL-) - Body ground Always 10 kΩ or higher
      R96-2 (SR+) - Body ground Always 10 kΩ or higher
      R96-6 (SR-) - Body ground Always 10 kΩ or higher
      R96-1 (SL+) - Body ground Always 10 kΩ or higher
      R96-5 (SL-) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (w/ Emergency Call Switch) A
      OK (w/o Emergency Call Switch) B
      NG C

    B

    Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  2. CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] - FRONT NO. 2 SPEAKER RH)


    1. Disconnect the L127 DCM (telematics transceiver) connector.

    2. Disconnect the L84 front No. 2 speaker assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L127-11 (SPO+) - L84-1 Always Below 1 Ω
      L127-12 (SPO-) - L84-2 Always Below 1 Ω
      L127-11 (SPO+) - Body ground Always 10 kΩ or higher
      L127-12 (SPO-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT DCM (TELEMATICS TRANSCEIVER)


    1. A01GXOSE15

      Remove the DCM (telematics transceiver) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (SPI+) - 11 (SPO+) Always Below 1 Ω
      3 (SPI-) - 12 (SPO-) Always Below 1 Ω
      2 (SPI+) - Body ground Always 10 kΩ or higher
      3 (SPI-) - Body ground Always 10 kΩ or higher

    NG

    REPLACE DCM (TELEMATICS TRANSCEIVER) Click here

    OK

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. Inspect the front No. 2 speaker assembly Click here.


    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  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.


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly Click here.

    2. Inspect the front No. 3 speaker assembly Click here.


    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  7. INSPECT FLOOR STEREO COMPONENT SPEAKER ASSEMBLY


    1. Remove the floor stereo component speaker assembly Click here.

    2. Inspect the floor stereo component speaker assembly Click here.


    MG

    REPLACE FLOOR STEREO COMPONENT SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly.


    2. Inspect the rear No. 2 speaker assembly.


      Result
      Result Proceed to
      OK A
      NG (for Standard Body) B
      NG (for Long Body) C

    B

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    C

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    A

  9. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. Remove the rear No. 1 speaker assembly.


    2. Inspect the rear No. 1 speaker assembly.


      Result
      Result Proceed to
      OK A
      NG (for Standard Body) B
      NG (for Long Body) C

    B

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    C

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    A

  10. CHECK HARNESS AND CONNECTOR (REAR NO. 3 SPEAKER ASSEMBLY - REAR NO. 1 SPEAKER ASSEMBLY)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the Q8*1 or Q3*2 rear No. 3 speaker assembly connector.

    2. Disconnect the O21*1 or O10*2 rear No. 1 speaker assembly connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      Q8-3 (RLD+) - O21-1 Always Below 1 Ω
      Q8-4 (RLD-) - O21-2 Always Below 1 Ω
      Q8-3 (RLD+) - Body ground Always 10 kΩ or higher
      Q8-4 (RLD-) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      Q3-3 (RRD+) - O10-1 Always Below 1 Ω
      Q3-4 (RRD-) - O10-2 Always Below 1 Ω
      Q3-3 (RRD+) - Body ground Always 10 kΩ or higher
      Q3-4 (RRD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK REAR NO. 3 SPEAKER ASSEMBLY


    1. Temporarily replace the rear No. 3 speaker assembly with a new or normally functioning one.


    2. Check if the same malfunction recurs.

      OK
      Malfunction does not recur (returns to normal).

    NG

    Click here

    OK

    END (REAR NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

  12. INSPECT REAR HEADER SPEAKER ASSEMBLY


    1. Remove the rear header speaker assembly Click here.

    2. Inspect the rear header speaker assembly Click here.


    NG

    REPLACE REAR HEADER SPEAKER ASSEMBLY Click here

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here