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 No. Detection Item DTC Detection Condition Trouble Area
B15C3 Speaker Output Short A short is detected in the speaker output circuit.

  • Harness or connector

  • Speaker

  • Stereo component amplifier assembly

WIRING DIAGRAM


  1. for 10 Speakers

    B004EEXE01
    B004FQIE10

  2. for 17 Speakers

    B004EEXE01
    B004FK1E03

PROCEDURE


  1. CHECK MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 10 Speakers A
      for 17 Speakers B

    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the O54 and O55 front No. 2 speaker assembly connectors.

    3. Disconnect the R14 and S14 front No. 1 speaker assembly connectors.

    4. Disconnect the O56 front No. 3 speaker assembly connector.

    5. Disconnect the T25 and U35 rear speaker assembly connectors.

    6. Disconnect the T24 rear No. 3 speaker assembly connector.

    7. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-13 (FR+) - Body ground Always 10 kΩ or higher
      T20-28 (FR-) - Body ground Always 10 kΩ or higher
      T20-12 (FL+) - Body ground Always 10 kΩ or higher
      T20-27 (FL-) - Body ground Always 10 kΩ or higher
      T20-5 (WFR+) - Body ground Always 10 kΩ or higher
      T20-20 (WFR-) - Body ground Always 10 kΩ or higher
      T20-4 (WFL+) - Body ground Always 10 kΩ or higher
      T20-19 (WFL-) - Body ground Always 10 kΩ or higher
      T20-7 (CTR+) - Body ground Always 10 kΩ or higher
      T20-22 (CTR-) - Body ground Always 10 kΩ or higher
      T20-15 (RR+) - Body ground Always 10 kΩ or higher
      T20-30 (RR-) - Body ground Always 10 kΩ or higher
      T20-14 (RL+) - Body ground Always 10 kΩ or higher
      T20-29 (RL-) - Body ground Always 10 kΩ or higher
      T20-6 (WF1+) - Body ground Always 10 kΩ or higher
      T20-21 (WF1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. B004GPYC23
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  4. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. B004GPYC23
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 4.0 to 6.0 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 2.0 to 3.0 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND)


    1. Disconnect the T20 stereo component amplifier assembly connector.

    2. Disconnect the O54 and O55 front No. 2 speaker assembly connectors.

    3. Disconnect the R14 and S14 front No. 1 speaker assembly connectors.

    4. Disconnect the O56 front No. 3 speaker assembly connector.

    5. Disconnect the T26 and U36 rear No. 2 speaker assembly connectors.

    6. Disconnect the T23 and U34 rear header speaker assembly connectors.

    7. Disconnect the T24 rear No. 3 speaker assembly connector.

    8. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T20-13 (FR+) - Body ground Always 10 kΩ or higher
      T20-28 (FR-) - Body ground Always 10 kΩ or higher
      T20-12 (FL+) - Body ground Always 10 kΩ or higher
      T20-27 (FL-) - Body ground Always 10 kΩ or higher
      T20-5 (WFR+) - Body ground Always 10 kΩ or higher
      T20-20 (WFR-) - Body ground Always 10 kΩ or higher
      T20-4 (WFL+) - Body ground Always 10 kΩ or higher
      T20-19 (WFL-) - Body ground Always 10 kΩ or higher
      T20-7 (CTR+) - Body ground Always 10 kΩ or higher
      T20-22 (CTR-) - Body ground Always 10 kΩ or higher
      T20-15 (RR+) - Body ground Always 10 kΩ or higher
      T20-30 (RR-) - Body ground Always 10 kΩ or higher
      T20-14 (RL+) - Body ground Always 10 kΩ or higher
      T20-29 (RL-) - Body ground Always 10 kΩ or higher
      T20-11 (SR+) - Body ground Always 10 kΩ or higher
      T20-26 (SR-) - Body ground Always 10 kΩ or higher
      T20-10 (SL+) - Body ground Always 10 kΩ or higher
      T20-25 (SL-) - Body ground Always 10 kΩ or higher
      T20-6 (WF1+) - Body ground Always 10 kΩ or higher
      T20-21 (WF1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (REAR NO. 2 SPEAKER ASSEMBLY - BODY GROUND)


    1. Disconnect the T25 and U35 rear speaker assembly connectors.

    2. Disconnect the T26 and U36 rear No. 2 speaker assembly connectors.

    3. Measure the resistance between each of the rear No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      T26-4 (+) - Body ground Always 10 kΩ or higher
      T26-2 (-) - Body ground Always 10 kΩ or higher
      U36-4 (+) - Body ground Always 10 kΩ or higher
      U36-2 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. B004GPYC23
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 6.5 to 9.7 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  12. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  13. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 4.3 to 6.3 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  14. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. B004GPYC23
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) Always 6.5 to 9.7 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  15. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY


    1. Replace the front No. 3 speaker assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  16. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.6 to 5.6 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  17. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly.

      Click here

    2. B004GB4C21
      *a

      Component without harness connected

      (Rear No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (+TW) - 1 (-TW) Always 10 kΩ or higher
      3 (+TW) - 4 (+) Always Below 1 Ω
      1 (-TW) - 2 (-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    OK

  18. REPLACE REAR NO. 2 SPEAKER ASSEMBLY


    1. Replace the rear No. 2 speaker assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  19. INSPECT REAR HEADER SPEAKER ASSEMBLY


    1. Remove the rear header speaker assembly.

      Click here

    2. B004G1OC01
      *a

      Component without harness connected

      (Rear Header Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 6.5 to 9.7 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR HEADER SPEAKER ASSEMBLY Click here

    OK

  20. REPLACE REAR HEADER SPEAKER ASSEMBLY


    1. Replace the rear header speaker assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.

      Tech Tips


      • Connect all the connectors to the rear header speaker assemblies that were disconnected.

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

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

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  21. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. B004GC0C01
      *a

      Component without harness connected

      (Rear No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 4.8 to 6.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here