NAVIGATION SYSTEM Illumination Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01VE4SE02

CAUTION / NOTICE / HINT

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 and display 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 and display receiver assembly. A
      No illumination comes on (radio and display receiver assembly, hazard switch, heater control switch, etc.). B

    B
    A
  2. CHECK HARNESS AND CONNECTOR


    1. A01VF1LE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the F113 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F113-7 (GND1) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      F113-10 (ILL+) - Body ground Light control switch tail or head 11 to 14 V

    OK
    NG