AUDIO AND VISUAL SYSTEM(w/o Multi-display) Illumination Circuit

DTC Code DTC Name
Illumination Circuit

DESCRIPTION

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

WIRING DIAGRAM

E205692E06

CAUTION / NOTICE / HINT

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 Precaution in the SRS (Click hereClick here).

PROCEDURE

  1. CHECK ILLUMINATION

    1. Check if the illumination for the radio receiver assembly, 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 assembly.

      B

      No illumination comes on (radio receiver, hazard switch, glove box, etc.).

      C

      Illumination comes on for all components except steering pad switch and radio receiver assembly.

      D
    B

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

    C

    GO TO LIGHTING SYSTEM

    Click here

    D

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMBINATION METER)Click here

    A

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

    1. E121218C03

      *a

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

      Disconnect the G28 spiral with sensor 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

      G28-12 (IL+2) - Body ground

      Light control switch TAIL or HEAD

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY

    1. Remove the steering pad switch assembly.

      Click hereClick here

      E250967E02

    2. Connect the positive (+) lead of the battery to terminal 5 (IL+2) and the negative (-) lead of the battery 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.

      Result

      Result

      OK

      NG
    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY

    Click hereClick here

    OK

  4. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    1. Remove the spiral with sensor cable sub-assembly.

      Click here

      B312289C03

      *a

      Steering Pad Switch Assembly Side

      *b

      Vehicle Side

    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 with sensor cable is turned 2.5 rotations counterclockwise

      Below 1 Ω

      Spiral with sensor cable is centered

      Spiral with sensor cable is turned 2.5 rotations clockwise

      5 (IL+2) - 12 (IL+2)

      Spiral with sensor cable is turned 2.5 rotations counterclockwise

      Spiral with sensor cable is centered

      Spiral with sensor cable is turned 2.5 rotations clockwise
      CAUTION:

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

      Click hereClick here

      Result

      Result

      OK

      NG
    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    Click here

    OK

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

    1. Disconnect the H30 radio receiver assembly connector.

    2. Disconnect the G28 spiral with sensor cable sub-assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H30-6 (SWG) - G28-4 (EAU)

      Always

      Below 1 Ω

      H30-6 (SWG) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. E190369C01

      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the H29 radio receiver assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      H29-2 (ILL+) - Body ground

      Light control switch TAIL or HEAD

      11 to 14 V

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. Disconnect the H29 radio receiver assembly connector.

    2. Disconnect the G3 combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H29-12 (ILL-) - G3-3 (ILL-)

      Always

      Below 1 Ω

      H29-12 (ILL-) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR