Automatic Day-Night Mirror System Components
The automatic day-night mirror system consist of the following components:
| • | Inside rearview mirror |
| • | Driver outside rearview mirror |
Automatic Day-Night Mirror Operation
With the ignition switch in the ON position, ignition 3 voltage is supplied through the IGN 3 RR fuse to the inside rearview mirror. The inside rearview mirror uses 2 photocell sensors in order to determine light conditions in the front and the back of the vehicle. At night with the automatic day-night feature enabled, as the glare of the headlamps from behind increases, the mirror gradually becomes darker in order to absorb the glare. In the daytime, the mirror is in a normal state. With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as an input to the inside rearview mirror. The inside rearview mirror will gradually change to a normal state as a result of the backup lamp supply voltage input. Ground for the inside rearview mirror is provided by G402.
The inside rearview mirror supplies a low reference circuit and a 1.5 volt 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.
Compass
The electronic compass includes a magnetic field sensor and microprocessor. The microprocessor receives inputs from the sensor, processes these inputs, and provides a heading on the compass display.
Automatic Day-Night Mirror Switches without Compass
The automatic day-night mirror has two 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. |
Automatic Day-Night Mirror Switches with Compass
The automatic day-night mirror has two switches that perform the following functions:
| • | The MIRROR switch is used to enable or disable the automatic day-night feature of the mirror. With the ignition in the ON position, depress the MIRROR 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. To disable the automatic day-night feature of the mirror, depress the MIRROR switch. |
| • | The COMPASS switch is used to turn the compass on and off. With the ignition in the ON position, depress the COMPASS switch to turn the compass on. Depress the COMPASS switch again to turn the compass off. The COMPASS switch is also used to place the compass into a calibration or zone mode. For more information, refer to Compass Calibration and Magnetic Variance . |
Automatic Day-Night Mirror Switch without Compass (w/OnStar®)
This is the on/off switch for the automatic day-night mirror. The on/off switch is used to enable or disable the automatic day-night feature of the mirror. With the ignition in the ON position, depress the on/off 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. To disable the automatic day-night feature of the mirror, depress the on/off switch.
Automatic Day-Night Mirror Switch with Compass (w/OnStar®)
The on/off switch is used to perform the following functions:
| • | To enable or disable the automatic day-night feature of the mirror. With the ignition in the ON position, depress and hold the on/off switch for 4 seconds 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. To disable the automatic day-night feature of the mirror, depress and hold the on/off switch for 4 seconds. |
| • | To turn the compass on and off. With the ignition in the ON position, depress the on/off switch to turn the compass on. Depress the on/off switch again to turn the compass off. The on/off switch is also used to place the compass into a calibration or zone mode. For more information, refer to Compass Calibration and Magnetic Variance . |
