AUDIO AND VISUAL SYSTEM(for Radio and Display Type), Diagnostic DTC:B15C3

DTC Code DTC Name
B15C3 Speaker Output Short

DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

DTC Code DTC Detection Condition Trouble Area
B15C3 A short is detected in the speaker output circuit.

  • Harness or connector

  • Speaker

  • Stereo component amplifier assembly*

  • Radio and display receiver assembly

WIRING DIAGRAM


  1. for 6 Speakers

    A0057SJE22

  2. for 10 Speakers

    A00544JE04

PROCEDURE


  1. CONFIRM MODEL

    Result
    Result Proceed to
    for 6 Speakers A
    for 10 Speakers B

    B

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the D125 and/or D126 radio and display receiver assembly connectors.

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

    3. Disconnect the D39*1 and/or D40*2 front No. 2 speaker assembly connectors.

    4. Disconnect the F2*1 and/or F7*2 rear No. 1 speaker assembly connectors.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      D125-2 (FL+) - D40-4 (+) Always Below 1 Ω
      D125-6 (FL-) - D40-2 (-) Always Below 1 Ω
      D40-3 (TWL+) - E11-1 Always Below 1 Ω
      D40-1 (TWL-) - E11-2 Always Below 1 Ω
      D126-2 (RL+) - F7-1 Always Below 1 Ω
      D126-6 (RL-) - F7-2 Always Below 1 Ω
      E11-1 - Body ground Always 10 kΩ or higher
      E11-2 - Body ground Always 10 kΩ or higher
      D40-4 (+) - Body ground Always 10 kΩ or higher
      D40-2 (-) - Body ground Always 10 kΩ or higher
      F7-1 - Body ground Always 10 kΩ or higher
      F7-2 - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      D125-1 (FR+) - D39-4 (+) Always Below 1 Ω
      D125-5 (FR-) - D39-2 (-) Always Below 1 Ω
      D39-3 (TWR+) - E1-1 Always Below 1 Ω
      D39-1 (TWR-) - E1-2 Always Below 1 Ω
      D126-1 (RR+) - F2-1 Always Below 1 Ω
      D126-3 (RR-) - F2-2 Always Below 1 Ω
      E1-1 - Body ground Always 10 kΩ or higher
      E1-2 - Body ground Always 10 kΩ or higher
      D39-4 (+) - Body ground Always 10 kΩ or higher
      D39-2 (-) - Body ground Always 10 kΩ or higher
      F2-1 - Body ground Always 10 kΩ or higher
      F2-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. 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

  4. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. Remove the rear No. 1 speaker assembly Click here.

    2. Inspect the rear No. 1 speaker assembly Click here.


    NG

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    OK

  5. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the front No. 2 speaker assembly with a known good one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

      Tech Tips


      • 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.


    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)

    *1: for RH Side

    *2: for LH Side


    1. Disconnect the D125 and D126 radio and display receiver assembly connectors.

    2. Disconnect the H20 stereo component amplifier assembly connector.

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

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

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

    6. Disconnect the F3*1 and/or F8*2 rear No. 2 speaker assembly connectors.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      H20-4 (WFL+) - E11-1 Always Below 1 Ω
      H20-11 (WFL-) - E11-2 Always Below 1 Ω
      D125-2 (FL+) - D53-1 (+) Always Below 1 Ω
      D125-6 (FL-) - D53-3 (-) Always Below 1 Ω
      H20-1 (RL+) - D53-2 (TWL+) Always Below 1 Ω
      H20-6 (RL-) - D53-4 (TWL-) Always Below 1 Ω
      D126-2 (RL+) - F8-4 (+) Always Below 1 Ω
      D126-6 (RL-) - F8-2 (-) Always Below 1 Ω
      F12-1 - F8-3 (+TW) Always Below 1 Ω
      F12-2 - F8-1 (-TW) Always Below 1 Ω
      E11-1 - Body ground Always 10 kΩ or higher
      E11-2 - Body ground Always 10 kΩ or higher
      D53-2 (TWL+) - Body ground Always 10 kΩ or higher
      D53-4 (TWL-) - Body ground Always 10 kΩ or higher
      D53-1 (+) - Body ground Always 10 kΩ or higher
      D53-3 (-) - Body ground Always 10 kΩ or higher
      F8-2 (-) - Body ground Always 10 kΩ or higher
      F8-4 (+) - Body ground Always 10 kΩ or higher
      F8-3 (+TW) - Body ground Always 10 kΩ or higher
      F8-1 (-TW) - Body ground Always 10 kΩ or higher
      F12-1 - Body ground Always 10 kΩ or higher
      F12-2 - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      H20-3 (WFR+) - E1-1 Always Below 1 Ω
      H20-8 (WFR-) - E1-2 Always Below 1 Ω
      D125-1 (FR+) - D52-1 (+) Always Below 1 Ω
      D125-5 (FR-) - D52-3 (-) Always Below 1 Ω
      H20-2 (RR+) - D52-2 (TWR+) Always Below 1 Ω
      H20-7 (RR-) - D52-4 (TWR-) Always Below 1 Ω
      D126-1 (RR+) - F3-4 (+) Always Below 1 Ω
      D126-3 (RR-) - F3-2 (-) Always Below 1 Ω
      F11-1 - F3-3 (+TW) Always Below 1 Ω
      F11-2 - F3-1 (-TW) Always Below 1 Ω
      E1-1 - Body ground Always 10 kΩ or higher
      E1-2 - Body ground Always 10 kΩ or higher
      D52-2 (TWR+) - Body ground Always 10 kΩ or higher
      D52-4 (TWR-) - Body ground Always 10 kΩ or higher
      D52-1 (+) - Body ground Always 10 kΩ or higher
      D52-3 (-) - Body ground Always 10 kΩ or higher
      F3-2 (-) - Body ground Always 10 kΩ or higher
      F3-4 (+) - Body ground Always 10 kΩ or higher
      F3-3 (+TW) - Body ground Always 10 kΩ or higher
      F3-1 (-TW) - Body ground Always 10 kΩ or higher
      F11-1 - Body ground Always 10 kΩ or higher
      F11-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. 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

  8. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. Remove the rear No. 1 speaker assembly Click here.

    2. Inspect the rear No. 1 speaker assembly Click here.


    NG

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    OK

  9. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the front No. 2 speaker assembly with a known good one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

      Tech Tips


      • 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.


    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  10. CHECK REAR NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the rear No. 2 speaker assembly with a known good one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

      Tech Tips


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

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

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


    OK

    END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  11. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Temporarily replace the stereo component amplifier assembly with a known good one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs are output.

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here