Illumination Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (w/ Navigation System): 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





INSPECTION PROCEDURE

PROCEDURE

1. CHECK ILLUMINATION

(a) 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:





B -- GO TO LIGHTING SYSTEM How To Proceed With Troubleshooting
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

Text in Illustration:

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

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

(a) Disconnect the radio receiver assembly connector and combination meter assembly 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