Diesel Data: Automotive Repair

Illumination Circuit

ILLUMINATION CIRCUIT

CIRCUIT DESCRIPTION
Power is supplied to the radio receiver panel illumination when the light control switch is in the TAIL or HEAD position. The body ECU determines the external brightness based on the brightness level detected by the automatic light control sensor, and then operates the tail relay. Power can also be supplied by operating the relay.

The intensity of the radio receiver panel illumination can be adjusted by the rheostat switch in the combination meter assy.

Wiring Diagram:






Step 1 - 2:




Step 3:




Step 4:




INSPECTION PROCEDURE