AUDIO AND VISUAL SYSTEM (w/ Navigation System) > Illumination Circuit

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DESCRIPTION

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

WIRING DIAGRAM


E203510E02


INSPECTION PROCEDURE

CAUTION:
Inspect the fuse for circuits related to this system before performing the following inspection procedure.

1.CHECK ILLUMINATION

  1. Check if the illumination for the radio receiver 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 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.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    H50-3 (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 connector and combination meter assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H50-17 (ILL-) - H19-10 (ILL-)
    		Always
    		Below 1 Ω
    H19-10 (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)