AUDIO AND VISUAL SYSTEM Illumination Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01CFC3E07

INSPECTION PROCEDURE

Note

The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System Click here.

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the radio receiver assembly, steering pad switch LH, heater control switch 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 LH. A
      Illumination comes on for all components except radio receiver assembly. B
      No illumination comes on (radio receiver assembly, hazard switch, heater control switch, etc.). C

    B

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

    C

    GO TO LIGHTING SYSTEM Click here

    A

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


    1. A01CCIBE52
      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 Condition Specified Condition
      G3-12 (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 LH


    1. Disconnect the steering pad switch LH connector.

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

      A01CFGNE01

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

      OK
      Illumination for the steering pad switch LH comes on.
      Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch LH)

      		 - -

    NG

    REPLACE STEERING PAD SWITCH LH Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. A01CFATE29
      Text in Illustration
      *a

      Component without harness connected

      (Spiral Cable Sub-assembly)
      *b Steering Pad Switch LH Side
      *c Vehicle Side

      Disconnect the steering pad switch LH and spiral cable sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z7-8 (EAU) - G3-4 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z7-5 (IL+2) - G3-12 (IL+2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

      Note

      The spiral cable sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable sub-assembly may prevent the airbag from deploying. Be sure to read the pages shown in the brackets.


    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the radio receiver assembly and spiral cable sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F6-6 (SWG) - G3-4 (EAU) Always Below 1 Ω
      F6-6 (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 (BATTERY - RADIO RECEIVER ASSEMBLY)


    1. Disconnect the radio receiver assembly connector.

    2. A01CCBXE14
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F3-10 (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 ASSEMBLY - BODY GROUND)


    1. 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
      F3-7 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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