AUDIO AND VISUAL SYSTEM(for Radio and Display Type), 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.

  • Radio and Display Receiver Assembly*1

  • Stereo component amplifier assembly*2

  • Speakers

  • Harness or connector

WIRING DIAGRAM

B001YVIE04
B001Y5WE10

CAUTION / NOTICE / HINT

Tech Tips


  • After the inspection is completed, clear the DTCs.

  • When replacing the radio and display receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).

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 VEHICLE CONDITION (SPEAKER TYPE)


    1. Check the vehicle condition.

      Result
      Result Proceed to
      for 6 Speakers A
      for 9 Speakers B

    B

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) Click here

    A

  4. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the F122 and F120 radio and display receiver assembly connectors.

    2. Disconnect the F13*1 and/or F14*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 J18*1 and/or J19*2 rear speaker set connector.

      Standard Resistance
      RH Side
      Tester Connection Condition Specified Condition
      F120-1 (FR+) - F7-1 (+) Always Below 1 Ω
      F120-5 (FR-) - F7-3 (-) Always Below 1 Ω
      F7-2 (TWR+) - F13-1 Always Below 1 Ω
      F7-4 (TWR-) - F13-2 Always Below 1 Ω
      F122-1 (RR+) - J18-1 Always Below 1 Ω
      F122-3 (RR-) - J18-2 Always Below 1 Ω
      F120-1 (FR+) - Body ground Always 10 kΩ or higher
      F120-5 (FR-) - Body ground Always 10 kΩ or higher
      F7-2 (TWR+) - Body ground Always 10 kΩ or higher
      F7-4 (TWR-) - Body ground Always 10 kΩ or higher
      F122-1 (RR+) - Body ground Always 10 kΩ or higher
      F122-3 (RR-) - Body ground Always 10 kΩ or higher
      LH Side
      Tester Connection Condition Specified Condition
      F120-2 (FL+) - F8-1 (+) Always Below 1 Ω
      F120-6 (FL-) - F8-3 (-) Always Below 1 Ω
      F8-2 (TWL+) - F14-1 Always Below 1 Ω
      F8-4 (TWL-) - F14-2 Always Below 1 Ω
      F122-2 (RL+) - J19-1 Always Below 1 Ω
      F122-6 (RL-) - J19-2 Always Below 1 Ω
      F120-2 (FL+) - Body ground Always 10 kΩ or higher
      F120-6 (FL-) - Body ground Always 10 kΩ or higher
      F8-2 (TWL+) - Body ground Always 10 kΩ or higher
      F8-4 (TWL-) - Body ground Always 10 kΩ or higher
      F122-2 (RL+) - Body ground Always 10 kΩ or higher
      F122-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    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. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker with a known good one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all the connectors that were disconnected from the front No. 2 speaker assemblies.

      • 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
      Malfunction disappears.

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  7. INSPECT REAR SPEAKER SET


    1. Remove the rear speaker set Click here.

    2. Inspect the rear speaker set Click here.

      Result
      Result Proceed to
      OK A
      NG B

    A

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    B

    REPLACE REAR SPEAKER SET Click here

  8. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for RH Side

    • *2: for LH Side


    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 F13*1 and/or F14*2 front No. 3 speaker assembly connector.

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

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

      Standard Resistance
      for Front No. 4 Speaker Assembly
      Tester Connection Condition Specified Condition
      F74-7 (CTR+) - F6-1 Always Below 1 Ω
      F74-22 (CTR-) - F6-2 Always Below 1 Ω
      F74-7 (CTR+) - Body ground Always 10 kΩ or higher
      F74-22 (CTR-) - Body ground Always 10 kΩ or higher
      RH Side
      Tester Connection Condition Specified Condition
      F74-5 (WFR+) - I1-1 Always Below 1 Ω
      F74-20 (WFR-) - I1-2 Always Below 1 Ω
      F74-13 (FR+) - F7-1 (+) Always Below 1 Ω
      F74-28 (FR-) - F7-3 (-) Always Below 1 Ω
      F7-2 (TWR+) - F13-1 Always Below 1 Ω
      F7-4 (TWR-) - F13-2 Always Below 1 Ω
      F74-15 (RR+) - J18-1 Always Below 1 Ω
      F74-30 (RR-) - J18-2 Always Below 1 Ω
      F74-5 (WFR+) - Body ground Always 10 kΩ or higher
      F74-20 (WFR-) - Body ground Always 10 kΩ or higher
      F74-13 (FR+) - Body ground Always 10 kΩ or higher
      F74-28 (FR-) - Body ground Always 10 kΩ or higher
      F7-2 (TWR+) - Body ground Always 10 kΩ or higher
      F7-4 (TWR-) - 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
      LH Side
      Tester Connection Condition Specified Condition
      F74-4 (WFL+) - I10-1 Always Below 1 Ω
      F74-19 (WFL-) - I10-2 Always Below 1 Ω
      F74-12 (FL+) - F8-1 (+) Always Below 1 Ω
      F74-27 (FL-) - F8-3 (-) Always Below 1 Ω
      F8-2 (TWL+) - F14-2 Always Below 1 Ω
      F8-4 (TWL-) - F14-1 Always Below 1 Ω
      F74-14 (RL+) - J19-1 Always Below 1 Ω
      F74-29 (RL-) - J19-2 Always Below 1 Ω
      F74-4 (WFL+) - Body ground Always 10 kΩ or higher
      F74-19 (WFL-) - 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
      F8-2 (TWL+) - Body ground Always 10 kΩ or higher
      F8-4 (TWL-) - 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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. 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

  10. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker with a known good one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all the connectors that were disconnected from the front No. 2 speaker assemblies.

      • 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
      Malfunction disappears.

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  11. CHECK FRONT NO. 4 SPEAKER ASSEMBLY


    1. Replace the front No. 4 speaker with a known good one Click here.

    2. Check that the malfunction disappears.

      Tech Tips

      Connect all the connectors that were disconnected from the front No. 4 speaker assemblies.

      OK
      Malfunction disappears.

    OK

    END (FRONT NO. 4 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  12. CHECK FRONT NO. 3 SPEAKER ASSEMBLY


    1. Replace the front No. 3 speaker with a known good one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all the connectors that were disconnected from the front No. 3 speaker assemblies.

      • 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
      Malfunction disappears.

    OK

    END (FRONT NO. 3 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  13. INSPECT REAR SPEAKER SET


    1. Remove the rear speaker set Click here.

    2. Inspect the rear speaker set Click here.

      Result
      Result Proceed to
      OK A
      NG B

    A

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    B

    REPLACE REAR SPEAKER SET Click here