NAVIGATION SYSTEM (for Navigation Receiver 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

  • Stereo component amplifier assembly

WIRING DIAGRAM

A01EKZGE01
A01EJ88E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the E12 and E15 stereo component amplifier assembly connectors.

    2. Disconnect the E23 and E24 front No. 3 speaker assembly connectors.

    3. Disconnect the E25 and E26 front No. 2 speaker assembly connectors.

    4. Disconnect the H1 and I1 front No. 1 speaker assembly connectors.

    5. Disconnect the E27 front No. 4 speaker assembly connector.

    6. Disconnect the J4 and K4 rear speaker assembly connectors.

    7. Disconnect the J5 and K5 rear No. 2 speaker assembly connectors.

    8. Disconnect the M17 and L11 rear No. 3 speaker assembly connectors.

    9. 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
      E15-10 (FR+) - Body ground Always 10 kΩ or higher
      E15-9 (FR-) - Body ground Always 10 kΩ or higher
      E15-3 (FL+) - Body ground Always 10 kΩ or higher
      E15-8 (FL-) - Body ground Always 10 kΩ or higher
      E12-2 (WFR+) - Body ground Always 10 kΩ or higher
      E12-6 (WFR-) - Body ground Always 10 kΩ or higher
      E12-1 (WFL+) - Body ground Always 10 kΩ or higher
      E12-5 (WFL-) - Body ground Always 10 kΩ or higher
      E12-3 (CTR+) - Body ground Always 10 kΩ or higher
      E12-9 (CTR-) - Body ground Always 10 kΩ or higher
      E12-8 (RR+) - Body ground Always 10 kΩ or higher
      E12-7 (RR-) - Body ground Always 10 kΩ or higher
      E15-4 (RL+) - Body ground Always 10 kΩ or higher
      E15-11 (RL-) - Body ground Always 10 kΩ or higher
      E12-4 (WF2+) - Body ground Always 10 kΩ or higher
      E12-10 (WF2-) - Body ground Always 10 kΩ or higher
      E15-5 (WF1+) - Body ground Always 10 kΩ or higher
      E15-12 (WF1-) - Body ground Always 10 kΩ or higher
      E15-2 (SR+) - Body ground Always 10 kΩ or higher
      E15-7 (SR-) - Body ground Always 10 kΩ or higher
      E15-1 (SL+) - Body ground Always 10 kΩ or higher
      E15-6 (SL-) - Body ground Always 10 kΩ or higher

    10. 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
      E25-3 (+) - Body ground Always 10 kΩ or higher
      E25-4 (-) - Body ground Always 10 kΩ or higher
      E26-3 (+) - Body ground Always 10 kΩ or higher
      E26-4 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

    2. A01EL19E40
      Text in Illustration
      *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
      2 - 3 Always 10 kΩ or higher

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  3. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY


    1. Replace the front No. 3 speaker assembly 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. 3 speaker assemblies that were disconnected.

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

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


    NG

    INSPECT FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

    END (FRONT NO. 3 SPEAKER ASSEMBLY WAS DEFECTIVE)

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

    2. A01EIS4E85
      Text in Illustration
      *A for RH
      *B for LH
      *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 (TWR+) - 2 (TWR-) Always 1.5 to 2.5 Ω
      1 (TWR+) - 3 (+) Always Below 1 Ω
      2 (TWR-) - 4 (-) Always Below 1 Ω
      1 (TWL+) - 2 (TWL-) Always 1.5 to 2.5 Ω
      1 (TWL+) - 3 (+) Always Below 1 Ω
      2 (TWL-) - 4 (-) Always Below 1 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

    2. A01EKCLE03
      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 1.65 to 2.15 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    1. Remove the front No. 4 speaker assembly.

    2. A01EIS4E86
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 4 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 1.5 to 2.5 Ω

    NG

    REPLACE FRONT NO. 4 SPEAKER ASSEMBLY Click here

    OK

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

    2. A01EKCLE03
      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 1.5 to 2.2 Ω

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly.

    2. A01EKH8E29
      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 1.5 to 2.5 Ω

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    OK

  9. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

    2. A01ELD3E11
      Text in Illustration
      *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 1.5 to 2.5 Ω

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here