Mirrors: Description and Operation

SIDEVIEW MIRROR
Power mirrors are controlled by a single switch located on the driver's door. The switch has rocker buttons marked L (left) and R (right) for mirror selection and four buttons for mirror direction movement.

The motors which operate the mirrors are part of the mirror assembly and can not be replaced separately.

The vehicle is equipped with an Ignition-Off Draw fuse which is used when it is originally shipped from the factory. This fuse is located in the fuse block and helps to prevent battery discharge during storage when disconnected.

This fuse is included in the power mirror circuit and should be checked if the mirrors are inoperative.

REAR VIEW MIRROR

Fig. 3 Electrochromic Mini-Trip Mirror (EMTM) Front View:

Fig. 4 Electrochromic Mini-Trip Mirror (EMTM) Rear View:

Electrochromic Mini-trip Mirror (EMTM) System
The Electrochromic Mini-Trip Mirror (EMTM) system, consists of an electronic control module with a vacuum fluorescent display (VFD) and function switches. The EMTM electronic module displays the compass, trip computer, and temperature features.

Pressing the center button will cause the EMTM to change its mode of operation when the ignition is ON. The following is a list of the available modes.
- Compass/Temperature
- Trip odometer (ODO)
- Average miles per gallon (ECO)
- Instantaneous mile per gallon
- Distance to empty (DTE)
- Elapsed time (ET)
- OFF

Fig. 5 Electrochromic Mini-Trip Mirror (EMTM) Function Switches:

The EMTM module has three buttons used to select various functions. The selector buttons will not operate until the ignition is in the Run position.

When the ignition switch is first turned to the RUN position, the following occurs in the display:
- Blanks momentarily.
- All segments of the VFD will light for one second.
- Blanks momentarily.
- Return to the last mode setting selected before the ignition was last switched OFF.

Compass
The compass is self-calibrating and usually requires no adjustment. It is located within the Electrochromic Mini-Trip Mirror (EMTM) module and is not serviced separately.

The compass will continuously perform a slow calibration to compensate for small magnetic variation common to any automobile. Uncommon magnetic shifts may be caused by items such as magnetic base antennas that can permanently alter the magnetic field of the vehicle roof panel. If an excessive magnetic field continues for five minutes, the compass heading will go blank and only the CAL symbol will illuminate. When this occurs, the vehicle roof panel may require demagnetizing. Refer to the demagnetizing procedure in this section.

Moderate magnetic shifts may, on very rare occasions, cause the compass heading to display only one or two of the eight possible headings. Although the compass will eventually compensate for this shift, it could take several ignition cycles. The compensation process can be expedited by manually activating the fast calibration routine. Refer to the fast calibrating procedure in this section. This procedure may be performed anytime that the compass appears to be inaccurate.

If the calibration data stored in the body control module is not received, the compass will read only NE (Northeast). The compass is self-calibrating and requires no adjusting. The word CAL is displayed to show that the compass is in calibration mode. CAL will turn OFF after the vehicle has gone through three complete circles without stopping in an area free of magnetic disturbance. If the module displays temperature while the compass is blank, turn OFF the ignition and run self-diagnostics. If the problem persists, demagnetize the vehicle (see the procedure for demagnetizing the vehicle in this section).

Thermometer
Engine temperature can increase the displayed temperature. The EMTM is designed to dampen temperature readings when the vehicle is moving at a rate slower than 18 miles per hour.

The outside temperature is measured from a sensor mounted in the front of the vehicle. If the temperature is more than 55 °C (131 °F), or less than -40 °C (-40 °F), the temperature sending line is shorted to ground or has an open circuit, the display should read SC.

The EMTM will not allow the temperature reading to increase when the vehicle is not moving.

Traveler Messages
Traveler data is obtained from the Body Control Module (BCM) via the CCD bus wires.