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.

  • Speakers

  • Navigation receiver assembly

  • Harness or connector

WIRING DIAGRAM

A01E002E46

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Disconnect the N12 and N11 navigation receiver assembly connectors.

    2. Clear the DTC Click here.

    3. Check if DTC B15C3 is output.

      OK
      DTC B15C3 is not output.

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  2. CHECK FOR DTC


    1. Disconnect the N12 navigation receiver assembly connector.

    2. Clear the DTC Click here.

    3. Check if DTC B15C3 is output.

      OK
      DTC B15C3 is not output.
      Result
      Result Proceed to
      OK A
      NG (for Double Cab) B
      NG (for Extra Cab) C

    B

    CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the N12 navigation receiver assembly connector.

    2. Disconnect the T24*1 and/or T23*2 front No. 2 speaker assembly connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      N12-1 (FR+) - T24-4 Always Below 1 Ω
      N12-5 (FR-) - T24-2
      N12-1 (FR+) - Body ground Always 10 kΩ or higher
      N12-5 (FR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      N12-2 (FL+) - T23-4 Always Below 1 Ω
      N12-6 (FL-) - T23-2
      N12-2 (FL+) - Body ground Always 10 kΩ or higher
      N12-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    • *1: for RH

    • *2: for LH


    1. Disconnect the T24*1 and/or T23*2 front No. 2 speaker assembly connector.

    2. Disconnect the S16*1 and/or S15*2 front No. 1 speaker assembly connector.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      T24-3 - S16-1 Always Below 1 Ω
      T24-1 - S16-2
      T24-3 - Body ground Always 10 kΩ or higher
      T24-1 - Body ground
      for LH
      Tester Connection Condition Specified Condition
      T23-3 - S15-1 Always Below 1 Ω
      T23-1 - S15-2
      T23-3 - Body ground Always 10 kΩ or higher
      T23-1 - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Disconnect the front No. 1 speaker assembly connector.

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


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all the speaker connectors to the speakers.

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

      Result
      Result Proceed to
      Malfunction does not disappear A
      Malfunction disappears B

    B

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    A

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the N11 navigation receiver assembly connector.

    2. Disconnect the S18*1 and/or S17*2 rear speaker assembly connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      N11-1 (RR+) - S18-1 Always Below 1 Ω
      N11-3 (RR-) - S18-2
      N11-1 (RR+) - Body ground Always 10 kΩ or higher
      N11-3 (RR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      N11-2 (RL+) - S17-1 Always Below 1 Ω
      N11-6 (RL-) - S17-2
      N11-2 (RL+) - Body ground Always 10 kΩ or higher
      N11-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. Disconnect the rear speaker assembly connector.

    2. Inspect the rear speaker assembly connector Click here.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

  9. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the N11 navigation receiver assembly connector.

    2. Disconnect the S20*1 and/or S19*2 rear speaker assembly connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      N11-1 (RR+) - S20-1 Always Below 1 Ω
      N11-3 (RR-) - S20-2
      N11-1 (RR+) - Body ground Always 10 kΩ or higher
      N11-3 (RR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      N11-2 (RL+) - S19-1 Always Below 1 Ω
      N11-6 (RL-) - S19-2
      N11-2 (RL+) - Body ground Always 10 kΩ or higher
      N11-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. INSPECT REAR SPEAKER ASSEMBLY


    1. Disconnect the rear speaker assembly connector.

    2. Inspect the rear speaker assembly connector Click here.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here