Click here

AUDIO AND VISUAL SYSTEM(for Radio and Display Type), Diagnostic DTC:B15C3

Click here
Click here
DTC Code DTC Name
B15C3 Speaker Output Short
Click here

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

  • Speakers

  • Radio and display receiver assembly
B0024LPE09
B00292TE02
B0025Z5E01
Table 1. for 2 Speakers *a Front No. 1 Speaker Assembly LH *b Front No. 1 Speaker Assembly RH *c Radio and Display Receiver Assembly
Click here

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Tip:

When replacing the radio and display receiver assembly, it is necessary to perform the vehicle contract setting for Connected Services (w/ Connected Services Function).

Click here

PROCEDURE


  1. Click here

    CHECK DTC


    1. Clear the DTCs.

      Click here


      1. Body Electrical > Navigation System > Clear DTCs


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

      Click here


      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Result Proceed to
      OK A
      NG (for 2 Speakers, for 4 Speakers (Single Cab)) B
      NG (for 4 Speakers (Double Cab, Smart Cab)) C
      NG (for 6 Speakers) D

  2. Click here

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G40 radio and display receiver assembly connector.

    2. Disconnect the K4*1 and/or J4*2 front No. 1 speaker assembly connector.

    3. for 4 Speakers (Single Cab):

      Disconnect the K7*1 and/or J7*2 front No. 2 speaker assembly connector.

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

      Standard Resistance
      Table 2. for LH Side (for 2 Speakers)
      Tester Connection Condition Specified Condition
      G40-2 (FL+) - K4-1 Always Below 1 Ω
      G40-6 (FL-) - K4-2 Always Below 1 Ω
      G40-2 (FL+) or K4-1 - Body ground Always 10 kΩ or higher
      G40-6 (FL-) or K4-2 - Body ground Always 10 kΩ or higher
      Table 3. for LH Side (for 4 Speakers (Single Cab))
      Tester Connection Condition Specified Condition
      G40-2 (FL+) - K7-4 (TWL+) Always Below 1 Ω
      G40-6 (FL-) - K7-2 (TWL-) Always Below 1 Ω
      K7-3 (+) - K4-1 Always Below 1 Ω
      K7-1 (-) - K4-2 Always Below 1 Ω
      G40-2 (FL+) or K7-4 (TWL+) - Body ground Always 10 kΩ or higher
      G40-6 (FL-) or K7-2 (TWL-) - Body ground Always 10 kΩ or higher
      K7-3 (+) or K4-1 - Body ground Always 10 kΩ or higher
      K7-1 (-) or K4-2 - Body ground Always 10 kΩ or higher
      Table 4. for RH Side (for 2 Speakers)
      Tester Connection Condition Specified Condition
      G40-1 (FR+) - J4-1 Always Below 1 Ω
      G40-5 (FR-) - J4-2 Always Below 1 Ω
      G40-1 (FR+) or J4-1 - Body ground Always 10 kΩ or higher
      G40-5 (FR-) or J4-2 - Body ground Always 10 kΩ or higher
      Table 5. for RH Side (for 4 Speakers (Single Cab))
      Tester Connection Condition Specified Condition
      G40-1 (FR+) - J7-4 (TWR+) Always Below 1 Ω
      G40-5 (FR-) - J7-2 (TWR-) Always Below 1 Ω
      J7-3 (+) - J4-1 Always Below 1 Ω
      J7-1 (-) - J4-2 Always Below 1 Ω
      G40-1 (FR+) or J7-4 (TWR+) - Body ground Always 10 kΩ or higher
      G40-5 (FR-) or J7-2 (TWR-) - Body ground Always 10 kΩ or higher
      J7-3 (+) or J4-1 - Body ground Always 10 kΩ or higher
      J7-1 (-) or J4-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. Click here

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK (for 2 Speakers)
      OK (for 4 Speakers (Single Cab))
      NG

    • OK (for 2 Speakers)

      REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

    • OK (for 4 Speakers (Single Cab))Click here
    • NG

      REPLACE FRONT NO. 1 SPEAKER ASSEMBLYClick here

  4. Click here

    CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly.

      Click here

    2. Clear the DTCs.

      Click here


      1. Body Electrical > Navigation System > Clear DTCs


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

      Click here


      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    • OK

      END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    • NG

      REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

  5. Click here

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G40 and G41 radio and display receiver assembly connectors.

    2. Disconnect the K4*1 and/or J4*2 front No. 1 speaker assembly connector.

    3. Disconnect the M2*1 and/or L2*2 rear speaker assembly connector.

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

      Standard Resistance
      Table 6. for LH Side
      Tester Connection Condition Specified Condition
      G40-2 (FL+) - K4-1 Always Below 1 Ω
      G40-6 (FL-) - K4-2 Always Below 1 Ω
      G41-2 (RL+) - M2-1 Always Below 1 Ω
      G41-6 (RL-) - M2-2 Always Below 1 Ω
      G40-2 (FL+) or K4-1 - Body ground Always 10 kΩ or higher
      G40-6 (FL-) or K4-2 - Body ground Always 10 kΩ or higher
      G41-2 (RL+) or M2-1 - Body ground Always 10 kΩ or higher
      G41-6 (RL-) or M2-2 - Body ground Always 10 kΩ or higher
      Table 7. for RH Side
      Tester Connection Condition Specified Condition
      G40-1 (FR+) - J4-1 Always Below 1 Ω
      G40-5 (FR-) - J4-2 Always Below 1 Ω
      G41-1 (RR+) - L2-1 Always Below 1 Ω
      G41-3 (RR-) - L2-2 Always Below 1 Ω
      G40-1 (FR+) or J4-1 - Body ground Always 10 kΩ or higher
      G40-5 (FR-) or J4-2 - Body ground Always 10 kΩ or higher
      G41-1 (RR+) or L2-1 - Body ground Always 10 kΩ or higher
      G41-3 (RR-) or L2-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

  7. Click here

    INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      for Smart Cab:Click here

      for Double Cab:Click here

    2. Inspect the rear speaker assembly.

      for Smart Cab:Click here

      for Double Cab:Click here

      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

    • NG

      REPLACE REAR SPEAKER ASSEMBLY for Smart Cab:Click here

      REPLACE REAR SPEAKER ASSEMBLY for Double Cab:Click here

  8. Click here

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G40 and G41 radio and display receiver assembly connectors.

    2. Disconnect the K4*1 and/or J4*2 front No. 1 speaker assembly connector.

    3. Disconnect the K7*1 and/or J7*2 front No. 2 speaker assembly connector.

    4. Disconnect the M2*1 and/or L2*2 rear speaker assembly connector.

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

      Standard Resistance
      Table 8. for LH Side
      Tester Connection Condition Specified Condition
      G40-2 (FL+) - K7-4 (TWL+) Always Below 1 Ω
      G40-6 (FL-) - K7-2 (TWL-) Always Below 1 Ω
      K7-3 (+) - K4-1 Always Below 1 Ω
      K7-1 (-) - K4-2 Always Below 1 Ω
      G41-2 (RL+) - M2-1 Always Below 1 Ω
      G41-6 (RL-) - M2-2 Always Below 1 Ω
      G40-2 (FL+) or K7-4 (TWL+) - Body ground Always 10 kΩ or higher
      G40-6 (FL-) or K7-2 (TWL-) - Body ground Always 10 kΩ or higher
      K7-3 (+) or K4-1 - Body ground Always 10 kΩ or higher
      K7-1 (-) or K4-2 - Body ground Always 10 kΩ or higher
      G41-2 (RL+) or M2-1 - Body ground Always 10 kΩ or higher
      G41-6 (RL-) or M2-2 - Body ground Always 10 kΩ or higher
      Table 9. for RH Side
      Tester Connection Condition Specified Condition
      G40-1 (FR+) - J7-4 (TWR+) Always Below 1 Ω
      G40-5 (FR-) - J7-2 (TWR-) Always Below 1 Ω
      J7-3 (+) - J4-1 Always Below 1 Ω
      J7-1 (-) - J4-2 Always Below 1 Ω
      G41-1 (RR+) - L2-1 Always Below 1 Ω
      G41-3 (RR-) - L2-2 Always Below 1 Ω
      G40-1 (FR+) or J7-4 (TWR+) - Body ground Always 10 kΩ or higher
      G40-5 (FR-) or J7-2 (TWR-) - Body ground Always 10 kΩ or higher
      J7-3 (+) or J4-1 - Body ground Always 10 kΩ or higher
      J7-1 (-) or J4-2 - Body ground Always 10 kΩ or higher
      G41-1 (RR+) or L2-1 - Body ground Always 10 kΩ or higher
      G41-3 (RR-) or L2-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. Click here

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

  10. Click here

    INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      for Smart Cab:

      Click here

      for Double Cab:

      Click here

    2. Inspect the rear speaker assembly.

      for Smart Cab:

      Click here

      for Double Cab:

      Click here

      Result
      Proceed to
      OK
      NG

  11. Click here

    CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly.

      Click here

    2. Clear the DTCs.

      Click here


      1. Body Electrical > Navigation System > Clear DTCs


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

      Click here


      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    • OK

      END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    • NG

      REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here