AUDIO AND VISUAL SYSTEM (for Radio and Display Type) Illumination Circuit

DESCRIPTION

Power is supplied to the radio and display receiver assembly and steering pad switch assembly*1 or steering pad switch LH*2 illumination when the headlight dimmer switch assembly is in the tail or head position.


WIRING DIAGRAM

A01J5G7E02

INSPECTION PROCEDURE

CAUTION:

The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the SRS Click here.

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the radio and display receiver assembly, steering pad switch assembly, glove box or other parts (hazard switch, transmission control switch, etc.) comes on when the headlight dimmer switch is turned to the head or tail position.

      Result
      Result Proceed to
      Illumination comes on for all components except steering pad switch assembly*1 or steering pad switch LH*2. A
      Illumination comes on for all components except radio and display receiver assembly. B
      No illumination comes on (radio and display receiver assembly, hazard switch, glove box, etc.). C

      • *1: w/ Accessory Meter

      • *2: w/o Accessory Meter


    B

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND) Click here

    C

    GO TO LIGHTING SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BATTERY)


    1. A01J43FE29
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the spiral cable sub-assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      S30-12 (IL+2) - Body ground Headlight dimmer switch assembly tail or head position 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    • *1: w/ Accessory Meter

    • *2: w/o Accessory Meter


    1. Remove the steering pad switch assembly*1 or steering pad switch LH*2 Click here.

    2. Inspect the steering pad switch assembly*1 or steering pad switch LH*2 Click here.


    NG

    REPLACE STEERING PAD SWITCH Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Remove the spiral cable sub-assembly Click here.

    2. Inspect the spiral cable sub-assembly Click here.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. Disconnect the R19 radio and display receiver assembly connector.

    2. Disconnect the S30 spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R19-23 (SWG) - S30-4 (EAU) Always Below 1 Ω
      R19-23 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  6. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01J3BCE65
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R25-7 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R25-10 (ILL+) - Body ground Headlight dimmer switch assembly tail or head position 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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