AUDIO AND VISUAL SYSTEM Illumination Circuit

DESCRIPTION

Power is supplied to the radio receiver and steering pad switch illumination when the light control switch is in the TAIL or HEAD position.

WIRING DIAGRAM

A003B2JE01

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, steering pad switch, glove box or other parts (hazard switch, transmission control switch, etc.) come on when the light control switch is turned to the HEAD or TAIL position.

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

    B

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BATTERY) Click here

    C

    GO TO LIGHTING SYSTEM Click here

    A

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


    1. A003DAWE17
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the D5 spiral cable connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D5-12 (IL+2) - Body ground Light control switch TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly Click here.

      A003CHOE01

    2. Connect the positive (+) lead to of the battery terminal 5 (IL+2) and the negative (-) lead to terminal 8 (EAU) of the steering pad switch assembly connector.

    3. Check if the illumination for the steering pad switch assembly comes on.

      OK
      Illumination for the steering pad switch assembly comes on.

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. A003DUQE03
      Text in Illustration
      *1 Steering Pad Switch Side
      *2 Vehicle Side

      Remove the spiral cable sub-assembly Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      8 (EAU) - 4 (EAU) Spiral cable is turned 2.5 rotations counterclockwise Below 1 Ω
      Spiral cable is centered
      Spiral cable is turned 2.5 rotations clockwise
      5 (IL+2) - 12 (IL+2) Spiral cable is turned 2.5 rotations counterclockwise
      Spiral cable is centered
      Spiral cable is turned 2.5 rotations clockwise

      CAUTION:

      The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the Precaution for the SRS Click here.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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


    1. A003AKFE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Spiral Cable Sub-assembly)

      Disconnect the D15 radio receiver connector.

    2. Disconnect the D5 spiral cable connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D15-6 (SWG) - D5-4 (EAU) Always Below 1 Ω
      D15-6 (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 - BATTERY)


    1. A003DLSE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the D1 radio receiver connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D1-10 (ILL+) - Body ground Light control switch TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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