NAVIGATION SYSTEM Speaker Circuit

DESCRIPTION

for 6 Speakers:

If there is a short in a speaker circuit, the radio and display receiver assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the radio and display receiver assembly or speakers.

for 9 Speakers:

If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.

WIRING DIAGRAM


  1. for 6 Speakers

    A01SF7TE20

  2. for 9 Speakers

    A01SFPYE01
    A01SFP8E01
    *a Rear Speaker Assembly RH
    *b Rear Speaker Assembly LH
    *c No. 1 Speaker with Box Assembly
    *d Stereo Component Amplifier Assembly

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 9 Speakers B

    B

    CHECK HARNESS AND CONNECTOR Click here

    A

  2. CHECK HARNESS AND CONNECTOR


    1. Disconnect the E1 and E2 radio and display receiver assembly connectors.

    2. Disconnect the G1 and H1 front No. 1 speaker assembly connectors.

    3. Disconnect the G4 and H5 front No. 2 speaker assembly connectors.

    4. Disconnect the J2 and K2 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-1 (FR+) - G4-4 (TWR+) Always Below 1 Ω
      E1-5 (FR-) - G4-2 (TWR-) Always Below 1 Ω
      E1-2 (FL+) - H5-4 (TWL+) Always Below 1 Ω
      E1-6 (FL-) - H5-2 (TWL-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G1-1 - G4-3 (+) Always Below 1 Ω
      G1-2 - G4-1 (-) Always Below 1 Ω
      H1-1 - H5-3 (+) Always Below 1 Ω
      H1-2 - H5-1 (-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E2-1 (RR+) - J2-1 Always Below 1 Ω
      E2-3 (RR-) - J2-2 Always Below 1 Ω
      E2-2 (RL+) - K2-1 Always Below 1 Ω
      E2-6 (RL-) - K2-2 Always Below 1 Ω

    8. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-1 (FR+) - Body ground Always 10 kΩ or higher
      E1-5 (FR-) - Body ground Always 10 kΩ or higher
      E1-2 (FL+) - Body ground Always 10 kΩ or higher
      E1-6 (FL-) - Body ground Always 10 kΩ or higher
      E2-1 (RR+) - Body ground Always 10 kΩ or higher
      E2-3 (RR-) - Body ground Always 10 kΩ or higher
      E2-2 (RL+) - Body ground Always 10 kΩ or higher
      E2-6 (RL-) - Body ground Always 10 kΩ or higher

    9. Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G4-3 (+) - Body ground Always 10 kΩ or higher
      G4-1 (-) - Body ground Always 10 kΩ or higher
      H5-3 (+) - Body ground Always 10 kΩ or higher
      H5-1 (-) - 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.

    2. A01SFQDC30
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

    2. A01SFFNC11
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (TWR+) - 2 (TWR-) Always 10 kΩ or higher
      3 (+) - 4 (TWR+) Always Below 1 Ω
      1 (-) - 2 (TWR-) Always Below 1 Ω
      4 (TWL+) - 2 (TWL-) Always 10 kΩ or higher
      3 (+) - 4 (TWL+) Always Below 1 Ω
      1 (-) - 2 (TWL-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  5. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 speaker is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

    2. A01SFQDC30
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR


    1. Disconnect the E91 stereo component amplifier assembly connector.

    2. Disconnect the G1 and H1 front No. 1 speaker assembly connectors.

    3. Disconnect the G4 and H5 front No. 2 speaker assembly connectors.

    4. Disconnect the J2 and K2 rear speaker assembly connectors.

    5. Disconnect the L44 No. 1 speaker with box assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-15 (FR+) - G1-1 Always Below 1 Ω
      E91-30 (FR-) - G1-2 Always Below 1 Ω
      E91-12 (FL+) - H1-1 Always Below 1 Ω
      E91-27 (FL-) - H1-2 Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-13 (TWR+) - G4-4 Always Below 1 Ω
      E91-28 (TWR-) - G4-2 Always Below 1 Ω
      E91-14 (TWL+) - H5-4 Always Below 1 Ω
      E91-29 (TWL-) - H5-2 Always Below 1 Ω

    8. Measure the resistance between each of the rear speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-11 (RR+) - J2-1 Always Below 1 Ω
      E91-26 (RR-) - J2-2 Always Below 1 Ω
      E91-10 (RL+) - K2-1 Always Below 1 Ω
      E91-25 (RL-) - K2-2 Always Below 1 Ω

    9. Measure the resistance between the No. 1 speaker with box assembly and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-9 (WFR+) - L44-1 (WF+) Always Below 1 Ω
      E91-24 (WFR-) - L44-3 (WF-) Always Below 1 Ω
      E91-8 (WFL+) - L44-4 (WF+) Always Below 1 Ω
      E91-23 (WFL-) - L44-2 (WF-) Always Below 1 Ω

    10. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E91-15 (FR+) - Body ground Always 10 kΩ or higher
      E91-30 (FR-) - Body ground Always 10 kΩ or higher
      E91-12 (FL+) - Body ground Always 10 kΩ or higher
      E91-27 (FL-) - Body ground Always 10 kΩ or higher
      E91-13 (TWR+) - Body ground Always 10 kΩ or higher
      E91-28 (TWR-) - Body ground Always 10 kΩ or higher
      E91-14 (TWL+) - Body ground Always 10 kΩ or higher
      E91-29 (TWL-) - Body ground Always 10 kΩ or higher
      E91-11 (RR+) - Body ground Always 10 kΩ or higher
      E91-26 (RR-) - Body ground Always 10 kΩ or higher
      E91-10 (RL+) - Body ground Always 10 kΩ or higher
      E91-25 (RL-) - Body ground Always 10 kΩ or higher
      E91-9 (WFR+) - Body ground Always 10 kΩ or higher
      E91-24 (WFR-) - Body ground Always 10 kΩ or higher
      E91-8 (WFL+) - Body ground Always 10 kΩ or higher
      E91-23 (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.

    2. A01SFQDC30
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 5.2 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  9. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

    2. A01SFFNC12
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 - 2 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  10. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 speaker is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  11. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

    2. A01SFQDC30
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.6 to 4.4 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  12. REPLACE REAR SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 speaker is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (REAR SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  13. INSPECT NO. 1 SPEAKER WITH BOX ASSEMBLY


    1. Remove the No. 1 speaker with box assembly.

    2. A01SFJQC17
      *a

      Component without harness connected

      (No. 1 Speaker with Box Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (WF+) - 3 (WF-) Always 4.0 to 6.4 Ω
      2 (WF-) - 4 (WF+) Always 4.0 to 6.4 Ω
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY Click here