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.

  • Harness or connector

  • Speaker

  • Stereo component amplifier assembly*1

  • Radio and display receiver assembly

WIRING DIAGRAM

A01V0RVE10
A01V1O4E17

PROCEDURE


  1. CONFIRM MODEL

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

    B

    CHECK HARNESS AND CONNECTOR Click here

    A

  2. CHECK HARNESS AND CONNECTOR


    1. Disconnect the F67 and F68 radio and display receiver assembly connectors.

    2. Disconnect the H8 and G8 front No. 1 speaker assembly connectors.

    3. Disconnect the F36 and F35 front No. 2 speaker assembly connectors.

    4. Disconnect the J4 and I4 rear speaker assembly connectors.

    5. Measure the resistance between each of the radio and display receiver assembly and the front No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F67-2 (FL+) - F36-4 (+) Always Below 1 Ω
      F67-6 (FL-) - F36-2 (-) Always Below 1 Ω
      F67-1 (FR+) - F35-4 (+) Always Below 1 Ω
      F67-5 (FR-) - F35-2 (-) Always Below 1 Ω

    6. Measure the resistance between each of the front No. 2 speaker assembly and front No. 1 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F36-3 (TWL+) - H8-1 Always Below 1 Ω
      F36-1 (TWL-) - H8-2 Always Below 1 Ω
      F35-3 (TWR+) - G8-1 Always Below 1 Ω
      F35-1 (TWR-) - G8-2 Always Below 1 Ω

    7. Measure the resistance between each of the radio and display receiver assembly and the rear speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F68-2 (RL+) - J4-1 Always Below 1 Ω
      F68-6 (RL-) - J4-2 Always Below 1 Ω
      F68-1 (RR+) - I4-1 Always Below 1 Ω
      F68-3 (RR-) - I4-2 Always Below 1 Ω

    8. Measure the resistance between each speaker assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H8-1 - Body ground Always 10 kΩ or higher
      H8-2 - Body ground Always 10 kΩ or higher
      G8-1 - Body ground Always 10 kΩ or higher
      G8-2 - Body ground Always 10 kΩ or higher
      F36-4 (+) - Body ground Always 10 kΩ or higher
      F36-2 (-) - Body ground Always 10 kΩ or higher
      F35-4 (+) - Body ground Always 10 kΩ or higher
      F35-2 (-) - Body ground Always 10 kΩ or higher
      J4-1 - Body ground Always 10 kΩ or higher
      J4-2 - Body ground Always 10 kΩ or higher
      I4-1 - Body ground Always 10 kΩ or higher
      I4-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

      Tech Tips

      The speaker should not be removed to check resistance.


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when another speaker in good condition is installed.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speakers.

      • If 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

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  5. INSPECT REAR SPEAKER ASSEMBLY


    1. Inspect the rear speaker assembly Click here.

      Tech Tips

      The speaker should not be removed to check resistance.


    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR


    1. Disconnect the F67 and F68 radio and display receiver assembly connectors.

    2. Disconnect the K15 stereo component amplifier assembly connector.

    3. Disconnect the H8 and G8 front No. 1 speaker assembly connectors.

    4. Disconnect the F38 and F37 front No. 2 speaker assembly connectors.

    5. Disconnect the J4 and I4 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K15-4 (WFL+) - H8-1 Always Below 1 Ω
      K15-11 (WFL-) - H8-2 Always Below 1 Ω
      K15-3 (WFR+) - G8-1 Always Below 1 Ω
      K15-8 (WFR-) - G8-2 Always Below 1 Ω

    7. Measure the resistance between each of the radio and display receiver assembly and the front No. 2 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F67-2 (FL+) - F38-2 (+) Always Below 1 Ω
      F67-6 (FL-) - F38-4 (-) Always Below 1 Ω
      F67-1 (FR+) - F37-2 (+) Always Below 1 Ω
      F67-5 (FR-) - F37-4 (-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K15-1 (RL+) - F38-1 (TWL+) Always Below 1 Ω
      K15-6 (RL-) - F38-3 (TWL-) Always Below 1 Ω
      K15-2 (RR+) - F37-1 (TWR+) Always Below 1 Ω
      K15-7 (RR-) - F37-3 (TWR-) Always Below 1 Ω

    9. Measure the resistance between each of the radio and display receiver assembly and the rear speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F68-2 (RL+) - J4-1 Always Below 1 Ω
      F68-6 (RL-) - J4-2 Always Below 1 Ω
      F68-1 (RR+) - I4-1 Always Below 1 Ω
      F68-3 (RR-) - I4-2 Always Below 1 Ω

    10. Measure the resistance between each speaker assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H8-1 - Body ground Always 10 kΩ or higher
      H8-2 - Body ground Always 10 kΩ or higher
      G8-1 - Body ground Always 10 kΩ or higher
      G8-2 - Body ground Always 10 kΩ or higher
      F38-2 (+) - Body ground Always 10 kΩ or higher
      F38-4 (-) - Body ground Always 10 kΩ or higher
      F38-1 (TWL+)- Body ground Always 10 kΩ or higher
      F38-3 (TWL-) - Body ground Always 10 kΩ or higher
      F37-2 (+) - Body ground Always 10 kΩ or higher
      F37-4 (-) - Body ground Always 10 kΩ or higher
      F37-1 (TWR+)- Body ground Always 10 kΩ or higher
      F37-3 (TWR-) - Body ground Always 10 kΩ or higher
      J4-1 - Body ground Always 10 kΩ or higher
      J4-2 - Body ground Always 10 kΩ or higher
      I4-1 - Body ground Always 10 kΩ or higher
      I4-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

      Tech Tips

      The speaker should not be removed to check resistance.


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when another speaker in good condition is installed.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speakers.

      • If 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

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  9. INSPECT REAR SPEAKER ASSEMBLY


    1. Inspect the rear speaker assembly Click here.

      Tech Tips

      The speaker should not be removed to check resistance.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  10. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Temporarily replace the stereo component amplifier assembly with a new or normally functioning one Click here.

    2. Check that sound is emitted from the speaker normally.

      OK
      Malfunction disappears.

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here