NAVIGATION SYSTEM(for Radio and Display 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. Detection Item DTC Detection Condition Trouble Area
B15C3 Speaker Output Short A short is detected in the speaker output circuit.

  • Speakers

  • Harness or connector

  • Stereo component amplifier assembly (for 11 speakers)

  • Radio and display receiver assembly

WIRING DIAGRAM

A01QSTUE03
A01QP6XE04
A01QP1DE04
for 11 Speakers
*a Rear Speaker Assembly RH
*b Rear Speaker Assembly LH
*c Woofer Box Speaker Assembly
*d Stereo Component Amplifier Assembly

CAUTION / NOTICE / HINT

Note

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. CHECK VEHICLE CONDITION


    1. Check the vehicle condition.

      Result
      Result Proceed to
      for 6 Speakers A
      for 11 Speakers B

    B

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) Click here

    A

  3. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G141 and G142 radio and display receiver assembly connectors.

    2. Disconnect the J1*1 and/or I1*2 front No. 1 speaker assembly connector.

    3. Disconnect the H1*1 and/or H3*2 front No. 2 speaker assembly connector.

    4. Disconnect the L2*1 and/or K2*2 rear speaker assembly connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      G141-2 (FL+) - H1-4 (TWL+) Always Below 1 Ω
      G141-6 (FL-) - H1-2 (TWL-) Always Below 1 Ω
      H1-3 (+) - J1-1 Always Below 1 Ω
      H1-1 (-) - J1-2 Always Below 1 Ω
      G142-2 (RL+) - L2-1 Always Below 1 Ω
      G142-6 (RL-) - L2-2 Always Below 1 Ω
      G141-2 (FL+) - Body ground Always 10 kΩ or higher
      G141-6 (FL-) - Body ground Always 10 kΩ or higher
      G142-2 (RL+) - Body ground Always 10 kΩ or higher
      G142-6 (RL-) - Body ground Always 10 kΩ or higher
      H1-3 (+) - Body ground Always 10 kΩ or higher
      H1-1 (-) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      G141-1 (FR+) - H3-4 (TWR+) Always Below 1 Ω
      G141-5 (FR-) - H3-2 (TWR-) Always Below 1 Ω
      H3-3 (+) - I1-1 Always Below 1 Ω
      H3-1 (-) - I1-2 Always Below 1 Ω
      G142-1 (RR+) - K2-1 Always Below 1 Ω
      G142-3 (RR-) - K2-2 Always Below 1 Ω
      G141-1 (FR+) - Body ground Always 10 kΩ or higher
      G141-5 (FR-) - Body ground Always 10 kΩ or higher
      G142-1 (RR+) - Body ground Always 10 kΩ or higher
      G142-3 (RR-) - Body ground Always 10 kΩ or higher
      H3-3 (+) - Body ground Always 10 kΩ or higher
      H3-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  5. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a known good one.

      Click here

    2. Check the malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speaker assemblies 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.

      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly connector.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the M33 stereo component amplifier assembly connector.

    2. Disconnect the J1*1 and/or I1*2 front No. 1 speaker assembly connector.

    3. Disconnect the H2*1 and/or H4*2 front No. 2 speaker assembly connector.

    4. Disconnect the L2*1 and/or K2*2 rear speaker assembly connector.

    5. Disconnect the N33 Woofer box speaker assembly connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      M33-14 (FL+) - J1-1 Always Below 1 Ω
      M33-29 (FL-) - J1-2 Always Below 1 Ω
      M33-10 (TWL+) - H2-4(TWL+) Always Below 1 Ω
      M33-25 (TWL-) - H2-3(TWL-) Always Below 1 Ω
      M33-11 (RL+) - L2-1(+) Always Below 1 Ω
      M33-26 (RL-) - L2-2(-) Always Below 1 Ω
      M33-14 (FL+) - Body ground Always 10 kΩ or higher
      M33-29 (FL-) - Body ground Always 10 kΩ or higher
      M33-10 (TWL+) - Body ground Always 10 kΩ or higher
      M33-25 (TWL-) - Body ground Always 10 kΩ or higher
      M33-11 (RL+) - Body ground Always 10 kΩ or higher
      M33-26 (RL-) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      M33-9 (FR+) - I1-1 Always Below 1 Ω
      M33-24 (FR-) - I1-2 Always Below 1 Ω
      M33-13 (TWR+) - H4-4(TWR+) Always Below 1 Ω
      M33-28 (TWR-) - H4-3(TWR-) Always Below 1 Ω
      M33-12 (RR+) - K2-1(+) Always Below 1 Ω
      M33-27 (RR-) - K2-2(-) Always Below 1 Ω
      M33-9 (FR+) - Body ground Always 10 kΩ or higher
      M33-24 (FR-) - Body ground Always 10 kΩ or higher
      M33-13 (TWR+) - Body ground Always 10 kΩ or higher
      M33-28 (TWR-) - Body ground Always 10 kΩ or higher
      M33-12 (RR+) - Body ground Always 10 kΩ or higher
      M33-27 (RR-) - Body ground Always 10 kΩ or higher
      for Woofer Box Speaker
      Tester Connection Condition Specified Condition
      M33-15 (WFR+) - N33-4 (WF+) Always Below 1 Ω
      M33-30 (WFR-) - N33-1 (WF-) Always Below 1 Ω
      M33-8 (WFL+) - N33-3 (WF+) Always Below 1 Ω
      M33-23 (WFL-) - N33-2 (WF-) Always Below 1 Ω
      M33-15 (WFR+) - Body ground Always 10 kΩ or higher
      M33-30 (WFR-) - Body ground Always 10 kΩ or higher
      M33-8 (WFL+) - Body ground Always 10 kΩ or higher
      M33-23 (WFL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  9. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a known good one.

      Click here

    2. Check the malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speaker assemblies 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.

      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  10. CHECK REAR SPEAKER ASSEMBLY


    1. Replace the rear speaker assembly with a known good one.

      Click here

    2. Check the malfunction disappears.

      Tech Tips


      • Connect all the connectors to the rear speaker assemblies 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.

      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (REAR SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  11. INSPECT WOOFER BOX SPEAKER ASSEMBLY


    1. Remove the woofer box speaker assembly.

      Click here

    2. Inspect the woofer box speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE WOOFER BOX SPEAKER ASSEMBLY Click here

    OK

  12. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Replace the stereo component amplifier assembly with a known good one.

      Click here

    2. Check the malfunction disappears.

      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here