Illumination Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (w/ Navigation System for HDD): Illumination Circuit
- 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





INSEPCTION PROCEDURE

PROCEDURE

1. CHECK ILLUMINATION

(a) 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:





B -- GO TO LIGHTING SYSTEM
A -- Continue to next step.

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

(a) Disconnect the radio receiver assembly connector.





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

Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - CENTER JUNCTION BLOCK)

(a) Disconnect the radio receiver assembly connector and center junction connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table