Inside Rearview Mirror with the Automatic Day-Night Feature System
Components
The inside rearview mirror with the automatic day-night feature system
consist of the following components:
| • | Driver outside mirror with the automatic day-night feature |
Power and Ground of the Inside Rearview Mirror
| • | With the ignition ON, ignition voltage is supplied to the mirror
from the HVAC 1 fuse in the I/P fuse block. |
| • | Ground for the mirror is provided by G202. |
Inside Rearview Mirror with the Automatic Day-Night Feature System Operation
The inside rearview mirror uses 2 photocell sensors. One sensor is
the headlight sensor, located on the rear side of the mirror. The headlight sensor
is used to determine light conditions present at the mirror face. The other sensor
is the ambient light sensor, located on the front of the mirror or windshield side.
The ambient light sensor is used to determine light conditions present at the mirror.
With automatic day-night feature enabled, the mirror uses ambient light sensor
to determine the exterior light condition. With a low light condition detected, and
a high light condition from behind at the headlight sensor, the inside
rearview mirror will automatically darken the face of the mirror.
In the daytime, the mirror is in a normal state because of the high light
condition that is indicated by the ambient light sensor. With the gear selector
lever in the REVERSE position, backup lamp supply voltage is supplied as an input
to the inside rearview mirror. In night time conditions only, the mirror monitors
this input to disable the automatic day-night feature which allows the face to
gradually change to a normal state. This allows the driver to see objects in the
mirror clearly when backing up.
Driver Outside Rearview Mirror with the Automatic Day-Night Feature
Operation
The inside rearview mirror will also darken the driver outside rearview
mirror. The inside rearview mirror supplies a low reference circuit
and a signal circuit to the driver outside rearview mirror. Refer
to
Outside Mirror Description and Operation
in Doors for further description and
operation of the driver outside rearview mirror.
Switches of the Inside Rearview Mirror with the Automatic Day-Night Feature
The inside rearview mirror has 2 switches that perform the following functions:
| • | The AUTO switch is used to enable the automatic day-night feature of the mirror. With the ignition in the ON position, depress the AUTO switch to enable the automatic day-night feature of the mirror. A green indicator will illuminate on the mirror when the automatic day-night feature is enabled. |
| • | The OFF switch is used to disable the automatic day-night feature of the mirror. |
