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.

  • Speakers

  • Radio and display receiver assembly

  • Harness or connector

WIRING DIAGRAM

A01J3IDE19

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Disconnect the R25 and R26 radio and display receiver assembly connectors.

    2. Clear the DTC Click here.

    3. Check if DTC B15C3 is output.

      OK
      DTC B15C3 is not output.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  2. CHECK FOR DTC


    1. Reconnect the R26 radio and display receiver assembly connector.

    2. Clear the DTC Click here.

    3. Check if DTC B15C3 is output.

      OK
      DTC B15C3 is not output.

    NG

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER - REAR SPEAKER) Click here

    OK

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


    1. Disconnect the R25 radio and display receiver assembly connector.

    2. Disconnect the T25*1 and/or T24*2 speaker connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      R25-1 (FR+) - T25-4 Always Below 1 Ω
      R25-5 (FR-) - T25-2
      R25-1 (FR+) - Body ground Always 10 kΩ or higher
      R25-5 (FR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      R25-2 (FL+) - T24-4 Always Below 1 Ω
      R25-6 (FL-) - T24-2
      R25-2 (FL+) - Body ground Always 10 kΩ or higher
      R25-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    • *1: for RH

    • *2: for LH


    1. Disconnect the T25*1 and/or T24*2 speaker connector.

    2. Disconnect the S16*1 and/or S15*2 speaker connector.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      T25-3 - S16-1 Always Below 1 Ω
      T25-1 - S16-2
      T25-3 - Body ground Always 10 kΩ or higher
      T25-1 - Body ground
      for LH
      Tester Connection Condition Specified Condition
      T24-3 - S15-1 Always Below 1 Ω
      T24-1 - S15-2
      T24-3 - Body ground Always 10 kΩ or higher
      T24-1 - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A01J7HQ

      Disconnect the S16*1 and/or S15*2 speaker connector.


      • *1: for RH

      • *2: for LH

    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

  6. INSPECT 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 the 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 does not disappear A
      Malfunction disappears B

    B

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    A

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

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


    1. Disconnect the R26 radio and display receiver assembly connector.

    2. Disconnect the S18*1 and/or S17*2 speaker connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      R26-1 (RR+) - S18-1 Always Below 1 Ω
      R26-3 (RR-) - S18-2
      R26-1 (RR+) - Body ground Always 10 kΩ or higher
      R26-3 (RR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      R26-2 (RL+) - S17-1 Always Below 1 Ω
      R26-6 (RL-) - S17-2
      R26-2 (RL+) - Body ground Always 10 kΩ or higher
      R26-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. A01J7HQ

      Disconnect the S18*1 and/or S17*2 speaker connector.


      • *1: for RH

      • *2: for LH

    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 SPEAKER ASSEMBLY Click here

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here