NAVIGATION SYSTEM, 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

    A00OSF2E01

  2. for 11 Speakers

    A00OQM6E01

INSPECTION PROCEDURE

PROCEDURE


  1. CONFIRM MODEL

    Result
    Result Proceed to
    for 6 Speakers A
    for 11 Speakers B

    B

    CHECK HARNESS AND CONNECTOR Click here

    A

  2. CHECK HARNESS AND CONNECTOR


    • *1: for RH Side

    • *2: for LH Side


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

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

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

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

    5. Measure the resistance between each of the radio and display receiver assembly and the front No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D125-1 (FR+) - D39-4 (+) Always Below 1 Ω
      D125-5 (FR-) - D39-2 (-) Always Below 1 Ω
      D125-2 (FL+) - D40-4 (+) Always Below 1 Ω
      D125-6 (FL-) - D40-2 (-) Always Below 1 Ω

    6. Measure the resistance between each of the front No. 2 speaker assembly and front No. 1 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D39-3 (TWR+) - E1-1 Always Below 1 Ω
      D39-1 (TWR-) - E1-2 Always Below 1 Ω
      D40-3 (TWL+) - E11-1 Always Below 1 Ω
      D40-1 (TWL-) - E11-2 Always Below 1 Ω

    7. Measure the resistance between each of the radio and display receiver assembly and the rear No. 1 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D126-1 (RR+) - F2-1 Always Below 1 Ω
      D126-3 (RR-) - F2-2 Always Below 1 Ω
      D126-2 (RL+) - F7-1 Always Below 1 Ω
      D126-6 (RL-) - F7-2 Always Below 1 Ω

    8. Measure the resistance between each speaker assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-1 - Body ground Always 10 kΩ or higher
      E1-2 - Body ground Always 10 kΩ or higher
      E11-1 - Body ground Always 10 kΩ or higher
      E11-2 - 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
      D40-4 (+) - Body ground Always 10 kΩ or higher
      D40-2 (-) - 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
      F7-1 - Body ground Always 10 kΩ or higher
      F7-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

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


      • *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 FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

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


      • *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

  5. REPLACE 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 speaker sounds normally.

      OK
      Malfunction disappears.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

  6. CHECK HARNESS AND CONNECTOR

    *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 E11*2 front No. 1 speaker assembly connectors.

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

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

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

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

    8. Measure the resistance between each of the stereo component amplifier assembly and front No. 1 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H20-3 (WFR+) - E1-1 Always Below 1 Ω
      H20-8 (WFR-) - E1-2 Always Below 1 Ω
      H20-4 (WFL+) - E11-1 Always Below 1 Ω
      H20-11 (WFL-) - E11-2 Always Below 1 Ω

    9. Measure the resistance between each of the radio and display receiver assembly and the front No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D125-1 (FR+) - D52-1 (+) Always Below 1 Ω
      D125-5 (FR-) - D52-3 (-) Always Below 1 Ω
      D125-2 (FL+) - D53-1 (+) Always Below 1 Ω
      D125-6 (FL-) - D53-3 (-) Always Below 1 Ω

    10. Measure the resistance between each of the radio and display receiver assembly and the front No. 3 speaker assembly to check for an open circuit in the wire harness.

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

    11. Measure the resistance between each of the stereo component amplifier assembly and front No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H20-2 (RR+) - D52-2 (TWR+) Always Below 1 Ω
      H20-7 (RR-) - D52-4 (TWR-) Always Below 1 Ω
      H20-1 (RL+) - D53-2 (TWL+) Always Below 1 Ω
      H20-6 (RL-) - D53-4 (TWL-) Always Below 1 Ω

    12. Measure the resistance between each of the radio and display receiver assembly and the rear No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D126-1 (RR+) - F3-4 (+) Always Below 1 Ω
      D126-3 (RR-) - F3-2 (-) Always Below 1 Ω
      D126-2 (RL+) - F8-4 (+) Always Below 1 Ω
      D126-6 (RL-) - F8-2 (-) Always Below 1 Ω

    13. Measure the resistance between each of the rear No. 1 speaker assembly and the rear No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F11-1 - F3-3 (+TW) Always Below 1 Ω
      F11-2 - F3-1 (-TW) Always Below 1 Ω
      F12-1 - F8-3 (+TW) Always Below 1 Ω
      F12-2 - F8-1 (-TW) Always Below 1 Ω

    14. Measure the resistance between each speaker assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-1 - Body ground Always 10 kΩ or higher
      E1-2 - Body ground Always 10 kΩ or higher
      E11-1 - Body ground Always 10 kΩ or higher
      E11-2 - 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
      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
      D51-1 (CTR-) - Body ground Always 10 kΩ or higher
      D51-2 (CTR+) - Body ground Always 10 kΩ or higher
      D51-3 (-) - Body ground Always 10 kΩ or higher
      D51-4 (+) - Body ground Always 10 kΩ or higher
      F3-4 (+) - Body ground Always 10 kΩ or higher
      F3-2 (-) - Body ground Always 10 kΩ or higher
      F8-4 (+) - Body ground Always 10 kΩ or higher
      F8-2 (-) - 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
      F12-1 - Body ground Always 10 kΩ or higher
      F12-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

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


      • *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

  8. 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
      1 (CTR-) - 2 (CTR+) Always 40 Ω
      3 (-) - 4 (+) Always 40 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  9. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. A00ORVT

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


      • *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

  10. REPLACE 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 speaker sounds normally.

      OK
      Malfunction disappears.

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

  11. 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 speaker sounds normally.

      OK
      Malfunction disappears.

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    OK

    END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

  12. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Temporarily replace the stereo component amplifier assembly with a new or normally functioning one Click here.

    2. Check that sound is emitted from the speaker normally.

      OK
      Malfunction disappears.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)