AUDIO AND VISUAL SYSTEM 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


  1. w/o PANEL Relay (Before October, 2010)

    A01J9RIE15

  2. w/o PANEL Relay (From October, 2010)

    A01J9Z9E01

  3. w/ PANEL Relay (Before October, 2010)

    A01J8ZME05

  4. w/ PANEL Relay (From October, 2010)

    A01J9PIE01

INSPECTION PROCEDURE

Note

The vehicle is equipped with an 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 assembly, heater control switch or others (hazard 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 assembly. 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
      Illumination comes on only for steering pad switch assembly. D

    B

    CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER ASSEMBLY) 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 WITH SENSOR CABLE SUB-ASSEMBLY)


    1. A01J8GFE22
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

      Disconnect the spiral with sensor cable sub-assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L52-12 (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. Disconnect the steering pad switch assembly connector.

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

      A01J8WQE01

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

      OK
      Illumination for the steering pad switch assembly comes on.
      *1

      Component without harness connected

      (Steering Pad Switch Assembly)

    4. Proceed to the next step based on the inspection result.

      Result
      Result Proceed to
      NG (From October, 2010) A
      NG (Before October, 2010) B
      OK C

    B

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    C

    INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    A

  4. INSPECT STEERING PAD SWITCH RH


    1. Disconnect the steering pad switch RH connectors.

      A01JBRZE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      SR1-3 (IL+2) - z9-5 (IL+2) Always Below 1 Ω
      SR1-4 (EAU) - z9-8 (EAU) Always Below 1 Ω
      Text in Illustration
      *a

      Component without harness connected

      (Steering Pad Switch RH)

      		 - -

    NG

    REPLACE STEERING PAD SWITCH RH Click here

    OK

    REPLACE STEERING PAD SWITCH LH Click here

  5. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


    1. A01JCX9E08
      Text in Illustration
      *1

      Component without harness connected

      (Spiral with Sensor Cable Sub-assembly)
      *2 Steering Pad Switch Assembly Side
      *3 Vehicle Side

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z9-8 (EAU) - L52-4 (EAU) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right
      z9-5 (IL+2) - L52-12 (IL+2) Center Below 1 Ω
      2.5 rotations to the left
      2.5 rotations to the right

      Note

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

      Tech Tips



    NG

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR


    1. A01JCMOE32
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly)

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L50-6 (SWG) - L52-4 (EAU) Always Below 1 Ω
      L50-6 (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

  7. CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER ASSEMBLY)


    1. A01J9A7E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      Disconnect the radio receiver assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L34-10 (ILL+) - Body ground Light control switch tail or head 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT RADIO RECEIVER ASSEMBLY


    1. A01J9A7E03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)

      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
      L34-7 (GND) - 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