NAVIGATION SYSTEM(for SD) Speaker Circuit

DTC Code DTC Name
Speaker Circuit

DESCRIPTION

The sound signals amplified by the navigation receiver assembly are sent to the speakers from the navigation receiver assembly via the speaker circuit.

If there is a short in a speaker circuit, the navigation 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 navigation receiver assembly or speakers.

WIRING DIAGRAM

E289192E03
E289193E03

CAUTION / NOTICE / HINT

Note:

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

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PROCEDURE

  1. 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

      Table 1. 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
      Table 2. 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
      Table 3. 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

  2. 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

  3. 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.

      Tip:

      • 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

  4. CHECK REAR SPEAKER ASSEMBLY

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

      Click here

    2. Check the malfunction disappears.

      Tip:

      • 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

      Malfunction disappears.

    Result

    Proceed to

    OK

    NG
    OK

    END (REAR SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  5. 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

  6. 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