NAVIGATION SYSTEM(for Radio and Display Type) Speaker Circuit

DESCRIPTION



WIRING DIAGRAM


  1. for 6 Speakers

    A005ELGE14

  2. for 8 Speakers

    A005ECZE12
    A005C2BE06

PROCEDURE


  1. CHECK MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 8 Speakers B

    B

    CHECK SPEAKER (OPERATION CHECK) Click here

    A

  2. CHECK SPEAKER (OPERATION CHECK)


    1. A005EWC

      Enter the "System Check Mode" screen.

      Refer to Check Speaker in Operation Check Click here.

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly A
      Rear speaker assembly B

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

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

    A

  3. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the L167 radio and display receiver assembly connector.

    2. Disconnect the I2 and I3 front No. 2 speaker assembly connectors.

    3. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L167-1 (FR+) - I2-2 (+) Always Below 1 Ω
      L167-5 (FR-) - I2-4 (-) Always Below 1 Ω
      L167-2 (FL+) - I3-2 (+) Always Below 1 Ω
      L167-6 (FL-) - I3-4 (-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-1 (+) - N1-1 Always Below 1 Ω
      I2-3 (-) - N1-2 Always Below 1 Ω
      I3-1 (+) - O1-1 Always Below 1 Ω
      I3-3 (-) - O1-2 Always Below 1 Ω

    6. 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
      L167-1 (FR+) - Body ground Always 10 kΩ or higher
      L167-5 (FR-) - Body ground Always 10 kΩ or higher
      L167-2 (FL+) - Body ground Always 10 kΩ or higher
      L167-6 (FL-) - Body ground Always 10 kΩ or higher

    7. 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
      I2-1 (+) - Body ground Always 10 kΩ or higher
      I2-3 (-) - Body ground Always 10 kΩ or higher
      I3-1 (+) - Body ground Always 10 kΩ or higher
      I3-3 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. A005A4TE03
      Text in Illustration
      *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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. A005BFUE63
      Text in Illustration
      *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
      2 (+) - 4 (-) Always 10 kΩ or higher
      1 (+) - 2 (+) Always Below 1 Ω
      3 (-) - 4 (-) Always Below 1 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  6. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a new or 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 front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

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


    OK

    END

    NG

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

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


    1. Disconnect the L166 radio and display receiver assembly connector.

    2. Disconnect the P3 and Q3 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L166-1 (RR+) - P3-1 Always Below 1 Ω
      L166-3 (RR-) - P3-2 Always Below 1 Ω
      L166-2 (RL+) - Q3-1 Always Below 1 Ω
      L166-6 (RL-) - Q3-2 Always Below 1 Ω

    4. 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
      L166-1 (RR+) - Body ground Always 10 kΩ or higher
      L166-3 (RR-) - Body ground Always 10 kΩ or higher
      L166-2 (RL+) - Body ground Always 10 kΩ or higher
      L166-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. A005A4TE03
      Text in Illustration
      *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

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  9. CHECK SPEAKER (OPERATION CHECK)


    1. A005EWC

      Enter the "System Check Mode" screen.

      Refer to Check Speaker in Operation Check Click here.

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 1 speaker assembly A
      Front No. 2 speaker assembly B
      Rear speaker assembly C
      Rear No. 2 speaker assembly D

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    D

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY) Click here

    A

  10. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L30-15 (WFR+) - N1-1 Always Below 1 Ω
      L30-30 (WFR-) - N1-2 Always Below 1 Ω
      L30-8 (WFL+) - O1-1 Always Below 1 Ω
      L30-23 (WFL-) - O1-2 Always Below 1 Ω

    4. 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
      L30-15 (WFR+) - Body ground Always 10 kΩ or higher
      L30-30 (WFR-) - Body ground Always 10 kΩ or higher
      L30-8 (WFL+) - Body ground Always 10 kΩ or higher
      L30-23 (WFL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. A005A4TE05
      Text in Illustration
      *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 4.6 to 6.6 Ω

    OK

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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

  12. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the I4 and I5 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L30-9 (FR+) - I4-1 Always Below 1 Ω
      L30-24 (FR-) - I4-2 Always Below 1 Ω
      L30-14 (FL+) - I5-1 Always Below 1 Ω
      L30-29 (FL-) - I5-2 Always Below 1 Ω

    4. 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
      L30-9 (FR+) - Body ground Always 10 kΩ or higher
      L30-24 (FR-) - Body ground Always 10 kΩ or higher
      L30-14 (FL+) - Body ground Always 10 kΩ or higher
      L30-29 (FL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. A005CA5E17
      Text in Illustration
      *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
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

  14. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the P3 and Q3 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L30-12 (RR+) - P3-1 Always Below 1 Ω
      L30-27 (RR-) - P3-2 Always Below 1 Ω
      L30-11 (RL+) - Q3-1 Always Below 1 Ω
      L30-26 (RL-) - Q3-2 Always Below 1 Ω

    4. 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
      L30-12 (RR+) - Body ground Always 10 kΩ or higher
      L30-27 (RR-) - Body ground Always 10 kΩ or higher
      L30-11 (RL+) - Body ground Always 10 kΩ or higher
      L30-26 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. A005A4TE02
      Text in Illustration
      *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 5.2 Ω

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  16. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the P5 and Q5 rear No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L30-13 (TWR+) - P5-1 Always Below 1 Ω
      L30-28 (TWR-) - P5-2 Always Below 1 Ω
      L30-10 (TWL+) - Q5-1 Always Below 1 Ω
      L30-25 (TWL-) - Q5-2 Always Below 1 Ω

    4. 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
      L30-13 (TWR+) - Body ground Always 10 kΩ or higher
      L30-28 (TWR-) - Body ground Always 10 kΩ or higher
      L30-10 (TWL+) - Body ground Always 10 kΩ or higher
      L30-25 (TWL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly Click here.

    2. A005BUEE92
      Text in Illustration
      *a

      Component without harness connected

      (Rear No. 2 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

    OK

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

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here