AUDIO AND VISUAL SYSTEM (w/ 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. DTC Detection Condition Trouble Area
B15C3 A short is detected in the speaker output circuit.

  • Wire harness or connector

  • Speaker

  • Telematics transceiver*1

  • Stereo component amplifier assembly

WIRING DIAGRAM

A01NDNJE01
A01NFH6E02

INSPECTION PROCEDURE

Note

When replacing the telematics transceiver, perform vehicle contract setting (w/ G-BOOK System) Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. A01NFZTE07
      A01NEWIE01

      Disconnect the connectors shown in the illustration from the stereo component amplifier assembly and speakers.

    2. Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O16-3 (WFL+) - J2-1 Always Below 1 Ω
      O16-8 (WFL-) - J2-2 Always Below 1 Ω
      O16-10 (WFR+) - I3-1 Always Below 1 Ω
      O16-9 (WFR-) - I3-2 Always Below 1 Ω

    3. Measure the resistance between the front No. 2 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O17-3 (FL+) - J4-1 (TWL+) Always Below 1 Ω
      O17-9 (FL-) - J4-2 (TWL-) Always Below 1 Ω

    4. w/o G-BOOK System:

      Measure the resistance between the front No. 2 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O17-4 (FR+) - I5-1 (TWR+) Always Below 1 Ω
      O17-10 (FR-) - I5-2 (TWR-) Always Below 1 Ω

    5. w/ G-BOOK System:

      Measure the resistance between the stereo component amplifier assembly and the telematics transceiver to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O17-4 (FR+) - G25-2 (SPI+) Always Below 1 Ω
      O17-10 (FR-) - G25-3 (SPI-) Always Below 1 Ω

    6. w/ G-BOOK System:

      Measure the resistance between the front No. 2 speaker RH and the telematics transceiver to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G25-5 (SPO+) - I5-1 (TWR+) Always Below 1 Ω
      G25-6 (SPO-) - I5-2 (TWR-) Always Below 1 Ω

    7. Measure the resistance between the front No. 4 speaker and stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O17-8 (CTR+) - H2-2 Always Below 1 Ω
      O17-7 (CTR-) - H2-1 Always Below 1 Ω

    8. Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O16-4 (RL+) - L1-1 (+TW) Always Below 1 Ω
      O16-11 (RL-) - L1-2 (-TW) Always Below 1 Ω
      O16-5 (RR+) - K1-1 (+TW) Always Below 1 Ω
      O16-12 (RR-) - K1-2 (-TW) Always Below 1 Ω

    9. Measure the resistance between the rear No. 3 speaker and stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O17-1 (WF1+) - P22-1 (WF1+) Always Below 1 Ω
      O17-5 (WF1-) - P22-3 (WF1-) Always Below 1 Ω
      O17-2 (WF2+) - P22-2 (WF2+) Always Below 1 Ω
      O17-6 (WF2-) - P22-4 (WF2-) Always Below 1 Ω

    10. Measure the resistance between each of the front No. 2 speakers and the front No. 3 speakers to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I5-3 (+) - I6-2 Always Below 1 Ω
      I5-4 (-) - I6-1 Always Below 1 Ω
      J4-3 (+) - J6-2 Always Below 1 Ω
      J4-4 (-) - J6-1 Always Below 1 Ω

    11. Measure the resistance between each of the rear No. 2 speakers and the rear No. 1 speakers to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L1-3 (+) - L4-1 Always Below 1 Ω
      L1-4 (-) - L4-2 Always Below 1 Ω
      K1-3 (+) - K4-1 Always Below 1 Ω
      K1-4 (-) - K4-2 Always Below 1 Ω

    12. 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
      O16-3 (WFL+) - Body ground Always 10 kΩ or higher
      O16-8 (WFL-) - Body ground Always 10 kΩ or higher
      O16-10 (WFR+) - Body ground Always 10 kΩ or higher
      O16-9 (WFR-) - Body ground Always 10 kΩ or higher
      O16-4 (RL+) - Body ground Always 10 kΩ or higher
      O16-11 (RL-) - Body ground Always 10 kΩ or higher
      O16-5 (RR+) - Body ground Always 10 kΩ or higher
      O16-12 (RR-) - Body ground Always 10 kΩ or higher
      O17-1 (WF1+) - Body ground Always 10 kΩ or higher
      O17-5 (WF1-) - Body ground Always 10 kΩ or higher
      O17-2 (WF2+) - Body ground Always 10 kΩ or higher
      O17-6 (WF2-) - Body ground Always 10 kΩ or higher
      O17-4 (FR+) - Body ground Always 10 kΩ or higher
      O17-10 (FR-) - Body ground Always 10 kΩ or higher
      O17-3 (FL+) - Body ground Always 10 kΩ or higher
      O17-9 (FL-) - Body ground Always 10 kΩ or higher
      O17-8 (CTR+) - Body ground Always 10 kΩ or higher
      O17-7 (CTR-) - Body ground Always 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I5-3 (+) - Body ground Always 10 kΩ or higher
      I5-4 (-) - Body ground Always 10 kΩ or higher
      J4-3 (+) - Body ground Always 10 kΩ or higher
      J4-4 (-) - Body ground Always 10 kΩ or higher

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L1-3 (+) - Body ground Always 10 kΩ or higher
      L1-4 (-) - Body ground Always 10 kΩ or higher
      K1-3 (+) - Body ground Always 10 kΩ or higher
      K1-4 (-) - Body ground Always 10 kΩ or higher

    15. w/ G-BOOK System:

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I5-1 (TWR+) - Body ground Always 10 kΩ or higher
      I5-2 (TWR-) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)
      *2

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)
      *3

      Front view of wire harness connector

      (to Front No. 2 Speaker)
      *4

      Front view of wire harness connector

      (to Front No. 3 Speaker, Front No. 4 Speaker)
      *5

      Front view of wire harness connector

      (to Front No. 1 Speaker, Rear No. 1 Speaker)
      *6

      Front view of wire harness connector

      (to Rear No. 2 Speaker)
      *7

      Front view of wire harness connector

      (to Rear No. 3 Speaker)
      *8

      Front view of wire harness connector

      (to Telematics Transceiver*11)

      • *11: w/ G-BOOK System


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER


    1. A01NDQME23
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 1 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J2-1 - J2-2 Always 3.2 to 4.8 Ω
        I3-1 - I3-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER


    1. Check that the malfunction disappears when a known good speaker is installed Click here.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speakers that were disconnected.

      • 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.


    NG

    INSPECT FRONT NO. 3 SPEAKER Click here

    OK

    END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)

  4. INSPECT FRONT NO. 3 SPEAKER


    1. A01NHCNE04
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 3 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I6-1 - I6-2 Always 3.2 to 4.8 Ω
        J6-1 - J6-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER Click here

    OK

  5. INSPECT FRONT NO. 4 SPEAKER


    1. A01NHCNE09
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 4 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H2-1 - H2-2 Always 4.8 to 7.2 Ω

    NG

    REPLACE FRONT NO. 4 SPEAKER Click here

    OK

  6. INSPECT REAR NO. 1 SPEAKER


    1. A01NDQME22
      Text in Illustration
      *1

      Component without harness connected

      (Rear No. 1 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L4-1 - L4-2 Always 3.2 to 4.8 Ω
        K4-1 - K4-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE REAR NO. 1 SPEAKER Click here

    OK

  7. INSPECT REAR NO. 2 SPEAKER


    1. Check that the malfunction disappears when a known good speaker is installed Click here.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the rear No. 2 speakers that were disconnected.

      • 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.


    NG

    INSPECT REAR NO. 3 SPEAKER Click here

    OK

    END (REAR NO. 2 SPEAKER WAS DEFECTIVE)

  8. INSPECT REAR NO. 3 SPEAKER


    1. A01ND44E01
      Text in Illustration
      *1

      Component without harness connected

      (Rear No. 3 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P22-1 (WF1+) - P22-3 (WF1-) Always 2.4 to 3.6 Ω
        P22-2 (WF2+) - P22-4 (WF2-) Always 2.4 to 3.6 Ω
        Result
        Condition Proceed to
        OK (w/ G-BOOK System) A
        OK (w/o G-BOOK System) B
        NG C

    B

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    C

    REPLACE REAR NO. 3 SPEAKER Click here

    A

  9. INSPECT TELEMATICS TRANSCEIVER


    1. Check that the malfunction disappears when a known good telematics transceiver is installed Click here.

      OK
      Malfunction disappears.

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    OK

    END (TELEMATICS TRANSCEIVER WAS DEFECTIVE)