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

DTC Code DTC Name
Illumination Circuit

DESCRIPTION

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

WIRING DIAGRAM

E345529E02

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 precautionary notice for the SRS (Click here).

Note:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

  1. CHECK ILLUMINATION

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

      Table 1. 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

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

    GO TO LIGHTING SYSTEM

    (Click here)

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

    1. U184794E02

      Disconnect the H130 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

      H130-13 (IL+2) - Body ground

      Light control switch in position tail or head

      11 to 14 V
      Table 2. Text in Illustration

      *a

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT STEERING PAD SWITCH ASSEMBLY

    1. Remove the steering pad switch assembly (Click here).

    2. Inspect the steering pad switch assembly (Click here).

    REPLACE STEERING PAD SWITCH ASSEMBLY

    (Click here)

  4. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    1. Remove the spiral with sensor cable sub-assembly (Click here).

      CAUTION:

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

    2. Inspect the spiral with sensor cable sub-assembly (Click here)

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    (Click here)

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

    1. Disconnect the H114 radio receiver assembly connector.

    2. Disconnect the H130 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

      H114-23 (SWG) - Body ground

      Always

      Below 1 Ω

      H130-3 (EAU) - Body ground

      Always

      Below 1 Ω

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. U123749E02

      Disconnect the H1 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

      H1-10 (ILL+) - Body ground

      Light control switch in position tail or head

      11 to 14 V
      Table 3. Text in Illustration

      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR