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

DESCRIPTION

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

WIRING DIAGRAM

A011S3HE02

INSPECTION PROCEDURE

Note

Inspect the fuse 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 assembly, 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 radio receiver assembly. A
      No illumination comes on (radio receiver assembly, hazard switch, heater control switch, etc.). B
    B

    GO TO LIGHTING SYSTEM Click here

    A

  2. CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)

    1. 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
      I148-10 (ILL+) - Body ground Light control switch in the tail or head position 11 to 14 V
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the radio receiver assembly and combination meter assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I149-5 (ILL-) - I18-4 (ILL-) Always Below 1 Ω
      I149-5 (ILL-) - 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