AUDIO AND VISUAL SYSTEM(w/ Multi-display), Diagnostic DTC:B15C3

DTC Code DTC Name
B15C3 Speaker Output Short

DESCRIPTION

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

  • Stereo component amplifier assembly

  • Speaker

  • Harness or connector

WIRING DIAGRAM

B001VN8E06
B001W22E02

CAUTION / NOTICE / HINT

Tech Tips

After the inspection is completed, clear the DTCs.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      DTC B15C3 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - SPEAKERS)


    • *1: for RH Side

    • *2: for LH Side

    • *3: for 14 Speakers

    • *4: for 9 Speakers


    1. Disconnect the F74 stereo component amplifier assembly connector.

    2. Disconnect the I1*1 and/or I10*2 front No. 1 speaker assembly connector.

    3. Disconnect the F7*1 and/or F8*2 front No. 2 speaker assembly connector.

    4. Disconnect the F6 front No. 4 speaker assembly connector.

    5. Disconnect the J18*1 and/or J19*2 rear speaker set connector.

    6. Disconnect the J2*1 and/or J9*2 rear No. 3 speaker connector*3.

    7. Disconnect the S8*1 and/or S9*2 rear header speaker assembly connector*3.

    8. Disconnect the L4 No. 1 woofer box speaker connector.*3

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F74-5 (WFR+) - I1-1*1 Always Below 1 Ω
      F74-20 (WFR-) - I1-2*1 Always Below 1 Ω
      F74-4 (WFL+) - I10-1*2 Always Below 1 Ω
      F74-19 (WFL-) - I10-2*2 Always Below 1 Ω
      F74-13 (FR+) - F7-1 (+)*1 Always Below 1 Ω
      F74-28 (FR-) - F7-3 (-)*1 Always Below 1 Ω
      F74-12 (FL+) - F8-1 (+)*2 Always Below 1 Ω
      F74-27 (FL-) - F8-2 (-)*2 Always Below 1 Ω
      F74-7 (CTR+) - F6-1 Always Below 1 Ω
      F74-22 (CTR-) - F6-2 Always Below 1 Ω
      F74-15 (RR+) - J18-1*1, *4 Always Below 1 Ω
      F74-30 (RR-) - J18-2*1, *4 Always Below 1 Ω
      F74-14 (RL+) - J19-1*2, *4 Always Below 1 Ω
      F74-29 (RL-) - J19-2*2, *4 Always Below 1 Ω
      F74-15 (R-R+) - J2-1 (+)*1, *3 Always Below 1 Ω
      F74-30 (R-R) - J2-3 (-)*1, *3 Always Below 1 Ω
      F74-14 (R-L+) - J9-1 (+)*2, *3 Always Below 1 Ω
      F74-29 (R-L-) - J9-3 (-)*2, *3 Always Below 1 Ω
      F74-11 (SR+) - S8-1 (RRD+)*1, *3 Always Below 1 Ω
      F74-26 (SR-) - S8-2 (RRD-)*1, *3 Always Below 1 Ω
      F74-10 (SL+) - S9-1 (RLD+)*2, *3 Always Below 1 Ω
      F74-25 (SL-) - S9-2 (RLD-)*2, *3 Always Below 1 Ω
      F74-6 (WF1+) - L4-1 (WF1+)*3 Always Below 1 Ω
      F74-21 (WF1-) - L4-2 (WF1-)*3 Always Below 1 Ω
      F74-8 (WF2+) - L4-3 (WF2+)*3 Always Below 1 Ω
      F74-23 (WF2-) - L4-4 (WF2-)*3 Always Below 1 Ω
      F74-5 (WFR+) - Body ground Always 10 kΩ or higher
      F74-20 (WFR-) - Body ground Always 10 kΩ or higher
      F74-4 (WFL+) - Body ground Always 10 kΩ or higher
      F74-19 (WFL-) - Body ground Always 10 kΩ or higher
      F74-13 (FR+) - Body ground Always 10 kΩ or higher
      F74-28 (FR-) - Body ground Always 10 kΩ or higher
      F74-12 (FL+) - Body ground Always 10 kΩ or higher
      F74-27 (FL-) - Body ground Always 10 kΩ or higher
      F74-7 (CTR+) - Body ground Always 10 kΩ or higher
      F74-22 (CTR-) - Body ground Always 10 kΩ or higher
      F74-15 (RR+) - Body ground Always 10 kΩ or higher
      F74-30 (RR-) - Body ground Always 10 kΩ or higher
      F74-14 (RL+) - Body ground Always 10 kΩ or higher
      F74-29 (RL-) - Body ground Always 10 kΩ or higher
      F74-15 (R-R+) - Body ground Always 10 kΩ or higher
      F74-30 (R-R) - Body ground Always 10 kΩ or higher
      F74-14 (R-L+) - Body ground Always 10 kΩ or higher
      F74-29 (R-L-) - Body ground Always 10 kΩ or higher
      F74-11 (SR+) - Body ground Always 10 kΩ or higher
      F74-26 (SR-) - Body ground Always 10 kΩ or higher
      F74-10 (SL+)- Body ground Always 10 kΩ or higher
      F74-25 (SL-) - Body ground Always 10 kΩ or higher
      F74-6 (WF1+) - Body ground Always 10 kΩ or higher
      F74-21 (WF1-) - Body ground Always 10 kΩ or higher
      F74-8 (WF2+) - Body ground Always 10 kΩ or higher
      F74-23 (WF2-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. B001YSI

      Disconnect the front No. 1 speaker assembly connector.

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

      Standard Resistance
      for 14 Speakers
      Tester Connection Condition Specified Condition
      1 - 2 Always 1.8 to 2.6 Ω
      for 9 Speakers
      Tester Connection Condition Specified Condition
      1 - 2 Always 3 Ω
      Result
      Result Proceed to
      OK (for 14 Speakers) A
      OK (for 9 Speakers) B
      NG C

    B

    CHECK FRONT NO. 2 SPEAKER ASSEMBLY Click here

    C

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    A

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. B001Y70E02
      Text in Illustration
      *A for RH Side
      *B for LH Side

      Disconnect the front No. 2 speaker assembly connector.

    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-) Always Below 1 Ω
      2 (TWR+) - 4 (TWR-) Always 1.5 to 2.5 Ω
      for LH Side
      Tester Connection Condition Specified Condition
      1 (+) - 2 (TWL+) Always Below 1 Ω
      3 (-) - 4 (TWL-) Always Below 1 Ω
      2 (TWL+) - 4 (TWL-) Always 1.5 to 2.5 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  6. CHECK FRONT NO. 3 SPEAKER ASSEMBLY


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

    2. Check for DTCs and check if the same DTCs is output Click here.

      OK
      No DTCs are output.

    OK

    END (FRONT NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

    CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER) Click here

  7. CHECK 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 for DTCs and check if the same DTCs is output Click here.

      OK
      No DTCs are output.

    A

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    B

  8. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. B001VMRE02

      Disconnect the 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 (-) - 2 (+) Always 4 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER)


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the F7*1 and/or F8*2 front No. 2 speaker assembly connector.

    2. Disconnect the F13*1 and/or F14*2 front No. 3 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
      F7-2 (TWR+) - F13-1 Always Below 1 Ω
      F7-4 (TWR-) - F13-2 Always Below 1 Ω
      F7-2 (TWR+) - Body ground Always 10 kΩ or higher
      F7-4 (TWR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      F8-2 (TWL+) - F14-1 Always Below 1 Ω
      F8-4 (TWL-) - F14-2 Always Below 1 Ω
      F8-2 (TWL+) - Body ground Always 10 kΩ or higher
      F8-4 (TWL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    1. B001WB6

      Disconnect the front No. 4 speaker assembly connector.

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

      Standard Resistance
      for 14 Speakers
      Tester Connection Condition Specified Condition
      1 - 2 Always 1.5 to 2.5 Ω
      for 9 Speakers
      Tester Connection Condition Specified Condition
      1 - 2 Always 6 Ω

    NG

    REPLACE FRONT NO. 4 SPEAKER ASSEMBLY Click here

    OK

  11. INSPECT REAR SPEAKER SET


    1. B001YSIE03

      Disconnect the rear speaker set connector.

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

      Standard Resistance
      for 14 Speakers
      Tester Connection Condition Specified Condition
      1 (WF+) - 2 (WF-) Always 1.5 to 2.3 Ω
      for 9 Speakers
      Tester Connection Condition Specified Condition
      1 (WF+) - 2 (WF-) Always 5 Ω
      Result
      Result Proceed to
      OK (for 14 Speakers) A
      OK (for 9 Speakers) B
      NG C

    B

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    C

    REPLACE REAR SPEAKER SET Click here

    A

  12. CHECK HARNESS AND CONNECTOR (REAR NO. 3 SPEAKER - REAR SPEAKER SET)


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the J2*1 and/or J9*2 front No. 3 speaker assembly connector.

    2. Disconnect the J18*1 and/or J19*2 rear speaker set connector.

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      J2-2 (+) - J18-1 (WF+) Always Below 1 Ω
      J2-4 (-) - J18-2 (WF-) Always Below 1 Ω
      J2-2 (+) - Body ground Always 10 kΩ or higher
      J2-4 (-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      J9-2 (+) - J19-1 (WF+) Always Below 1 Ω
      J9-4 (-) - J19-2 (WF-) Always Below 1 Ω
      J9-2 (+) - Body ground Always 10 kΩ or higher
      J9-4 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT REAR HEADER SPEAKER ASSEMBLY


    1. B001WB6E03
      Text in Illustration
      *A for RH Side
      *B for LH Side

      Disconnect the rear header assembly connector.

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      1 (RRD+) - 2 (RRD-) Always 1.5 to 2.5 Ω
      for LH Side
      Tester Connection Condition Specified Condition
      1 (RLD+) - 2 (RLD-) Always 1.5 to 2.5 Ω

    NG

    REPLACE REAR HEADER SPEAKER ASSEMBLY Click here

    OK

  14. CHECK REAR NO. 3 SPEAKER ASSEMBLY


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

    2. Check for DTCs and check if the same DTCs is output Click here.

      OK
      No DTCs are output.

    OK

    END (REAR NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  15. INSPECT NO. 1 WOOFER BOX SPEAKER ASSEMBLY


    1. B001WJKE02

      Disconnect the No. 1 woofer box speaker assembly speaker connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      1 (WF1+) - 2 (WF1-) Always 1.6 to 2.4 Ω
      for RH Side
      Tester Connection Condition Specified Condition
      3 (WF2+) - 4 (WF2-) Always 1.6 to 2.4 Ω

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE NO. 1 WOOFER BOX SPEAKER ASSEMBLY Click here