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

DESCRIPTION

Power is supplied to the radio 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

A01DWPUE05

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 receiver assembly, steering pad switch assembly*1 or steering pad switch LH*2, glove box or other parts (hazard switch, transmission control switch, etc.) comes on when the head light dimmer switch assembly is turned to the head or tail position.


      • *1: w/ Accessory Meter

      • *2: w/o Accessory Meter

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

    B

    CHECK HARNESS AND CONNECTOR (RADIO 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. A01E0PZE22
      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
      S42-12 (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


    • *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.

      Result
      Result Proceed to
      OK A
      NG (w/ Accessory Meter) B
      NG (w/o Accessory Meter) C

    B

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    C

    REPLACE STEERING PAD SWITCH LH Click here

    A

  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 RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. Disconnect the R17 radio receiver assembly connector.

    2. Disconnect the S42 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
      R17-23 (SWG) - S42-4 (EAU) Always Below 1 Ω
      R17-23 (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 RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01E252E39
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R1-7 (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
      R1-10 (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