NAVIGATION SYSTEM Speaker Circuit

DESCRIPTION

The sound signals amplified by the navigation receiver assembly*1 or stereo component amplifier assembly*2 are sent to the speakers from the navigation receiver assembly*1 or stereo component amplifier assembly*2 via the speaker circuit.

If there is a short in a speaker circuit, the navigation receiver assembly*1 or stereo component amplifier assembly*2 detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the navigation receiver assembly*1, stereo component amplifier assembly*2 or speakers.


WIRING DIAGRAM

B003MNIE05
B003RWEE04
B003M7YE05
for 11 Speakers
*a Rear Speaker Assembly RH
*b Rear Speaker Assembly LH
*c Rear No. 3 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 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

  2. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G43 and G44 navigation receiver assembly connectors.

    2. Disconnect the K4*1 and/or J3*2 front No. 1 speaker assembly connector.

    3. Disconnect the K7*1 and/or J6*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
      for LH Side
      Tester Connection Condition Specified Condition
      G43-2 (FL+) - K7-4 (TWL+) Always Below 1 Ω
      G43-6 (FL-) - K7-2 (TWL-) Always Below 1 Ω
      K7-3 (+) - K4-1 Always Below 1 Ω
      K7-1 (-) - K4-2 Always Below 1 Ω
      G44-2 (RL+) - M2-1 Always Below 1 Ω
      G44-6 (RL-) - M2-2 Always Below 1 Ω
      G43-2 (FL+) - Body ground Always 10 kΩ or higher
      G43-6 (FL-) - Body ground Always 10 kΩ or higher
      G44-2 (RL+) - Body ground Always 10 kΩ or higher
      G44-6 (RL-) - Body ground Always 10 kΩ or higher
      K7-3 (+) - Body ground Always 10 kΩ or higher
      K7-1 (-) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      G43-1 (FR+) - J6-4 (TWR+) Always Below 1 Ω
      G43-5 (FR-) - J6-2 (TWR-) Always Below 1 Ω
      J6-3 (+) - J3-1 Always Below 1 Ω
      J6-1 (-) - J3-2 Always Below 1 Ω
      G44-1 (RR+) - L2-1 Always Below 1 Ω
      G44-3 (RR-) - L2-2 Always Below 1 Ω
      G43-1 (FR+) - Body ground Always 10 kΩ or higher
      G43-5 (FR-) - Body ground Always 10 kΩ or higher
      G44-1 (RR+) - Body ground Always 10 kΩ or higher
      G44-3 (RR-) - Body ground Always 10 kΩ or higher
      J6-3 (+) - Body ground Always 10 kΩ or higher
      J6-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. 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

  4. 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

    NG

    REPLACE REAR 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
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the N55 stereo component amplifier assembly connector.

    2. Disconnect the K4*1 and/or J3*2 front No. 1 speaker assembly connector.

    3. Disconnect the K7*1 and/or J6*2 front No. 2 speaker assembly connector.

    4. Disconnect the H7*1 and/or H6*2 front No. 3 speaker assembly connector.

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

    6. Disconnect the V27 rear No. 3 speaker assembly connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      N55-12 (FL+) - K4-1 Always Below 1 Ω
      N55-27 (FL-) - K4-2 Always Below 1 Ω
      N55-9 (TWL+) - K7-4 (TWL+) Always Below 1 Ω
      N55-24 (TWL-) - K7-2 (TWL-) Always Below 1 Ω
      K7-3 (+) - H7-2 Always Below 1 Ω
      K7-1 (-) - H7-1 Always Below 1 Ω
      N55-10 (RL+) - M2-1 Always Below 1 Ω
      N55-25 (RL-) - M2-2 Always Below 1 Ω
      N55-12 (FL+) - Body ground Always 10 kΩ or higher
      N55-27 (FL-) - Body ground Always 10 kΩ or higher
      N55-9 (TWL+) - Body ground Always 10 kΩ or higher
      N55-24 (TWL-) - Body ground Always 10 kΩ or higher
      K7-3 (+) - Body ground Always 10 kΩ or higher
      K7-1 (-) - Body ground Always 10 kΩ or higher
      N55-10 (RL+) - Body ground Always 10 kΩ or higher
      N55-25 (RL-) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      N55-11 (FR+) - J3-1 Always Below 1 Ω
      N55-26 (FR-) - J3-2 Always Below 1 Ω
      N55-14 (TWR+) - J6-4 (TWR+) Always Below 1 Ω
      N55-29 (TWR-) - J6-2 (TWR-) Always Below 1 Ω
      J6-3 (+) - H6-2 Always Below 1 Ω
      J6-1 (-) - H6-1 Always Below 1 Ω
      N55-13 (RR+) - L2-1 Always Below 1 Ω
      N55-28 (RR-) - L2-2 Always Below 1 Ω
      N55-11 (FR+) - Body ground Always 10 kΩ or higher
      N55-26 (FR-) - Body ground Always 10 kΩ or higher
      N55-14 (TWR+) - Body ground Always 10 kΩ or higher
      N55-29 (TWR-) - Body ground Always 10 kΩ or higher
      J6-3 (+) - Body ground Always 10 kΩ or higher
      J6-1 (-) - Body ground Always 10 kΩ or higher
      N55-13 (RR+) - Body ground Always 10 kΩ or higher
      N55-28 (RR-) - Body ground Always 10 kΩ or higher
      for Rear No. 3 Speaker Assembly
      Tester Connection Condition Specified Condition
      N55-15 (WFR+) - V27-4 (WF+) Always Below 1 Ω
      N55-30 (WFR-) - V27-3 (WF-) Always Below 1 Ω
      N55-8 (WFL+) - V27-2 (WF+) Always Below 1 Ω
      N55-23 (WFL-) - V27-1 (WF-) Always Below 1 Ω
      N55-15 (WFR+) - Body ground Always 10 kΩ or higher
      N55-30 (WFR-) - Body ground Always 10 kΩ or higher
      N55-8 (WFL+) - Body ground Always 10 kΩ or higher
      N55-23 (WFL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. 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

  8. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly connector.

      Click here

    2. Inspect the front No. 3 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  9. 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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  10. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly connector.

      Click here

    2. Inspect the rear No. 3 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

    OK

  11. 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
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  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
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here