Sequoia 4WD V8-4.7L (2UZ-FE) (2006)
d. Noise problem
It is very important for a technician to understand the specifics of the noise problem. To diagnose the symptom, use the table.
HINT: If the noise does not fall into any category in the table above, determine the cause using "Radio reception problems" above. Refer to
the multi-path and phasing sections.
Illumination Circuit
Illumination Circuit
DESCRIPTION
Power is supplied to the radio and navigation panel illumination when the light control switch is in the TAIL or HEAD position. The main body ECU
determines the external brightness based on the brightness level detected by the automatic light control sensor, and then operates the TAILLIGHT 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.
Wiring Diagram