NAVIGATION 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 No. DTC Detection Condition Trouble Area
B15C3 A short is detected in the speaker output circuit

  • Harness or connector

  • Speaker

  • Radio and display receiver assembly*1

  • Stereo component amplifier assembly*2

WIRING DIAGRAM


  1. for 6 Speakers

    A005ELGE14

  2. for 8 Speakers

    A005ECZE13
    A005C2BE06

PROCEDURE


  1. CHECK MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 8 Speakers B

    B

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

    A

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)


    1. Disconnect the L167 and L166 radio and display receiver assembly connectors.

    2. Disconnect the I2 and I3 front No. 2 speaker assembly connectors.

    3. Disconnect the P3 and Q3 rear speaker assembly connectors.

    4. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L167-1 (FR+) - Body ground Always 10 kΩ or higher
      L167-5 (FR-) - Body ground Always 10 kΩ or higher
      L167-2 (FL+) - Body ground Always 10 kΩ or higher
      L167-6 (FL-) - Body ground Always 10 kΩ or higher
      L166-1 (RR+) - Body ground Always 10 kΩ or higher
      L166-3 (RR-) - Body ground Always 10 kΩ or higher
      L166-2 (RL+) - Body ground Always 10 kΩ or higher
      L166-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - BODY GROUND)


    1. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

    2. Disconnect the I2 and I3 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-1 (+) - Body ground Always 10 kΩ or higher
      I2-3 (-) - Body ground Always 10 kΩ or higher
      I3-1 (+) - Body ground Always 10 kΩ or higher
      I3-3 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. A005A4TE03
      Text in Illustration
      *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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. A005BFUE63
      Text in Illustration
      *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
      2 (+) - 4 (-) Always 10 kΩ or higher
      1 (+) - 2 (+) Always Below 1 Ω
      3 (-) - 4 (-) Always Below 1 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  6. 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.

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

      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.


    OK

    END

    NG

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. A005A4TE03
      Text in Illustration
      *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

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

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


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

    3. Disconnect the I4 and I5 front No. 2 speaker assembly connectors.

    4. Disconnect the P3 and Q3 rear speaker assembly connectors.

    5. Disconnect the P5 and Q5 rear No. 2 speaker assembly connectors.

    6. 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
      L30-15 (WFR+) - Body ground Always 10 kΩ or higher
      L30-30 (WFR-) - Body ground Always 10 kΩ or higher
      L30-8 (WFL+) - Body ground Always 10 kΩ or higher
      L30-23 (WFL-) - Body ground Always 10 kΩ or higher
      L30-9 (FR+) - Body ground Always 10 kΩ or higher
      L30-24 (FR-) - Body ground Always 10 kΩ or higher
      L30-14 (FL+) - Body ground Always 10 kΩ or higher
      L30-29 (FL-) - Body ground Always 10 kΩ or higher
      L30-12 (RR+) - Body ground Always 10 kΩ or higher
      L30-27 (RR-) - Body ground Always 10 kΩ or higher
      L30-11 (RL+) - Body ground Always 10 kΩ or higher
      L30-26 (RL-) - Body ground Always 10 kΩ or higher
      L30-13 (TWR+) - Body ground Always 10 kΩ or higher
      L30-28 (TWR-) - Body ground Always 10 kΩ or higher
      L30-10 (TWL+) - Body ground Always 10 kΩ or higher
      L30-25 (TWL-) - 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. A005A4TE05
      Text in Illustration
      *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 4.6 to 6.6 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  10. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. A005CA5E17
      Text in Illustration
      *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

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  11. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. A005A4TE02
      Text in Illustration
      *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 5.2 Ω

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  12. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly Click here.

    2. A005BUEE92
      Text in Illustration
      *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
      1 - 2 Always 3.2 to 4.8 Ω

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here