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

DESCRIPTION

The radio receiver assembly and steering pad switch assembly illuminates when the headlight dimmer switch is in the tail or head position.

WIRING DIAGRAM

B003KZPE01

CAUTION / NOTICE / HINT

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.

for Type A: Click here

for Type B: Click here

PROCEDURE


  1. CHECK ILLUMINATION


    1. Check if the illumination for the radio receiver assembly, steering pad switch assembly or others (hazard switch etc.) comes on when the turn signal 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, steering pad switch, hazard switch etc.). C

    B

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

    C

    GO TO LIGHTING SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)


    1. B003N9RC20
      *a

      Front view of wire harness connector

      (to Spiral with Sensor Cable Sub-assembly or Spiral Cable Sub-assembly)

      Disconnect the spiral with sensor cable sub-assembly*1 or spiral cable sub-assembly*2 connector.


      • *1: w/ VSC

      • *2: w/o VSC

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G4-13 (IL+2) - Body ground Light control switch in tail or head position 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Remove the steering pad switch assembly.

      Click here

    2. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STEERING PAD SWITCH ASSEMBLY Click here

    OK

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY OR SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY


    • *1: w/ VSC

    • *2: w/o VSC


    1. Remove the spiral with sensor cable sub-assembly*1 or spiral cable sub-assembly*2.

      Click here

    2. Inspect the spiral with sensor cable sub-assembly*1 or spiral cable sub-assembly*2.

      Click here

      Result
      Proceed to
      OK
      NG (w/ VSC)
      NG (w/o VSC)

    NG (w/ VSC)

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY Click here

    NG (w/o VSC)

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the G4 spiral with sensor cable sub-assembly*1 or spiral cable sub-assembly*2 connector.


      • *1: w/ VSC

      • *2: w/o VSC

    2. Disconnect the G171 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G4-3 (EAU) - G171-23 (SWG) Always Below 1 Ω
      G4-3 (EAU) or G171-23 (SWG) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      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 ASSEMBLY - COMBINATION METER ASSEMBLY AND BATTERY)


    1. Disconnect the G172 radio receiver assembly connector.

    2. B003R54C61
      *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 Switch Condition Specified Condition
      G172-10 (ILL+) - Body ground Headlight dimmer switch in tail or head position 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the G173 radio receiver assembly connector.

    2. for TFT Display Type:

      Disconnect the G9 combination meter assembly connector.

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

      Standard Resistance
      for TFT Display Type
      Tester Connection Condition Specified Condition
      G173-5 (ILL-) - G9-21 (ILL-) Always Below 1 Ω
      G173-5 (ILL-) or G9-21 (ILL-) - Body ground Always 10 kΩ or higher
      except TFT Display Type
      Tester Connection Condition Specified Condition
      G173-5 (ILL-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR