AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) Speaker Circuit

DESCRIPTION

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

If there is a short in a speaker circuit, the radio 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 receiver assembly, telematics transceiver or speakers.

If a short is detected in a speaker circuit, no sound can be heard from the speakers.

WIRING DIAGRAM

B000IL2E04

INSPECTION PROCEDURE

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER - SPEAKERS)


    1. Disconnect the I148 and I149 radio receiver assembly connectors.

    2. Disconnect the I218 telematics transceiver connector.

    3. Disconnect the J5 and K5 front No. 1 speaker assembly connectors.

    4. Disconnect the I1 and I83 front No. 2 speaker assembly connectors.

    5. Disconnect the O21 and O18 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I148-1 (FR+) - I218-2 (SPI+) Always Below 1 Ω
      I148-5 (FR-) - I218-3 (SPI-) Always Below 1 Ω
      I218-5 (SPO+) - I83-4 (TWR+) Always Below 1 Ω
      I218-6 (SPO-) - I83-2 (TWR-) Always Below 1 Ω
      I83-3 (+) - J5-1 Always Below 1 Ω
      I83-1 (-) - J5-2 Always Below 1 Ω
      I148-2 (FL+) - I1-4 (TWL+) Always Below 1 Ω
      I148-6 (FL-) - I1-2 (TWL-) Always Below 1 Ω
      I1-3 (+) - K5-1 Always Below 1 Ω
      I1-1 (-) - K5-2 Always Below 1 Ω
      I149-1 (RR+) - O18-1 Always Below 1 Ω
      I149-3 (RR-) - O18-2 Always Below 1 Ω
      I149-2 (RL+) - O21-1 Always Below 1 Ω
      I149-6 (RL-) - O21-2 Always Below 1 Ω
      I148-1 (FR+) or I218-2 (SPI+) - Body ground Always 10 kΩ or higher
      I148-5 (FR-) or I218-3 (SPI-) - Body ground Always 10 kΩ or higher
      I218-5 (SPO+) or I83-4 (TWR+) - Body ground Always 10 kΩ or higher
      I218-6 (SPO-) or I83-2 (TWR-) - Body ground Always 10 kΩ or higher
      I83-3 (+) or J5-1 - Body ground Always 10 kΩ or higher
      I83-1 (-) or J5-2 - Body ground Always 10 kΩ or higher
      I148-2 (FL+) or I1-4 (TWL+) - Body ground Always 10 kΩ or higher
      I148-6 (FL-) or I1-2 (TWL-) - Body ground Always 10 kΩ or higher
      I1-3 (+) or K5-1 - Body ground Always 10 kΩ or higher
      I1-1 (-) or K5-2 - Body ground Always 10 kΩ or higher
      I149-1 (RR+) or O18-1 - Body ground Always 10 kΩ or higher
      I149-3 (RR-) or O18-2 - Body ground Always 10 kΩ or higher
      I149-2 (RL+) or O21-1 - Body ground Always 10 kΩ or higher
      I149-6 (RL-) or O21-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT TELEMATICS TRANSCEIVER


    1. Remove the telematics transceiver Click here.

    2. B000LO9E41
      Text in Illustration
      *a

      Component without harness connected

      (Telematics Transceiver)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (SPI+) - 5 (SPO+) Always Below 1 Ω
      3 (SPI-) - 6 (SPO-) Always Below 1 Ω
      2 (SPI+) - 3 (SPI-) Always 10 kΩ or higher
      5 (SPO+) - 6 (SPO-) Always 10 kΩ or higher
      2 (SPI+) or 5 (SPO+) - Body ground Always 10 kΩ or higher
      3 (SPI-) or 6 (SPO-) - Body ground Always 10 kΩ or higher

    NG

    REPLACE TELEPHONE TRANSCEIVER ASSEMBLY Click here

    OK

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

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


    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 Click here.

    2. Inspect the front No. 2 speaker assembly Click here.


    NG

    INSPECT REAR SPEAKER ASSEMBLY Click here

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

  5. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. Inspect the rear speaker assembly Click here.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

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