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

A017BESE02

INSPECTION PROCEDURE

Note

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 supplemental restraint system Click here.

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the radio receiver, steering pad switch, glove box or others (hazard switch, transmission control switch, etc.) comes 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
      Illumination comes on only for glove box and steering pad switch. D

    B

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

    C

    GO TO LIGHTING SYSTEM Click here

    D

    GO TO METER / GAUGE SYSTEM Click here

    A

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


    1. A017EMBE14

      Disconnect the spiral cable connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      D53-12 (IL+2) - Body ground Light control SW TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Disconnect the steering pad switch connector.

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

      A017BJUE02

    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


    1. A017CXDE91

      Disconnect the steering pad switch and the spiral cable connectors.

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

      Standard resistance
      Tester Connection Spiral Cable Position Specified Condition
      z2-8 (EAU) - D53-4 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z2-5 (IL+2) - D53-12 (IL+2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

      Note

      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 page shown in the brackets.

      Tech Tips



    NG

    REPLACE SPIRAL CABLE Click here

    OK

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


    1. A017D75E18

      Disconnect the connectors from the radio receiver and spiral cable.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E2-6 (SWG) - D53-4 (EAU) Always Below 1 Ω
      E2-6 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  6. CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER)


    1. A017FW8E34

      Disconnect the radio receiver connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      E6-10 (ILL+) - Body ground Light control switch TAIL or HEAD 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMBINATION METER)


    1. A017CUFE02

      Disconnect the radio receiver connector and the combination meter connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E7-5 (ILL-) - E1-30 (ILL-) Always Below 1 Ω
      E1-40 (E2) - Body ground Always Below 1 Ω
      E1-30 (ILL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here