Interior/Instruments- Mirror/Compass Operation/Diagnosis
09-001/04626, MIATA, MILLENIA, MPV, PROTEGE, PROTEGE5, TRIBUTE, TRUCK,
PORT OR DEALER INSTALLED AUTO-DIMMING (ELECTRO-CHROMIC) MIRROR, WITH ELECTRONIC COMPASS, AMBIENT TEMPERATURE
APPLICABLE MODEL(S)/VINS
2000 and later 626, Miata, Millenia, MPV, Protege3 Protege5
2002 and later Tribute
2000 and later Truck
2003 and later Mazda6
NOTE:
The following information only applies to vehicles equipped with port or dealer installed auto-dimming accessory mirror w/electronic compass and ambient temperature. If vehicle is equipped with factory installed auto-dimming mirror w/electronic compass and ambient temperature, refer to the appropriate factory workshop manual for information.
DESCRIPTION
Starting in 2000 an accessory Auto Dimming Mirror was available. The mirror could come equipped with an electronic compass or an ambient temperature sensor or Homelink (Homelink allows you to program your garage remote to one of three buttons on the mirror assembly). This bulletin describes the mirror operation and diagnosis.
NOTE:
Mazda6 may come with factory or accessory installed auto-dimming mirror. If the Unit is factory installed, look in the wiring diagram for wiring information, if the unit is port or dealer installed, then the wiring information in this bulletin applies.
Power Wire Locations (ignition ON B+)
Battery Power Wire Locations (B+) with Homelink
Ground Wire Locations
Temperature Sensor Locations
Troubleshooting Guide
PINPOINT TEST "A" MIRROR FACE DOES NOT DIM
The forward facing sensor detects ambient light. This is to determine day or night time. This sensor will dim the mirror during night driving.
WARNING:
The forward sensor dims in proportion to how dark it is. If the forward sensor is covered entirely, the mirror defaults to its darkest setting.
The rear facing sensor detects light coming from vehicle headlights from behind. The rear facing sensor is used to darken the mirror further when headlights are detected.
PINPOINT TEST "B" MIRROR FACE IS ALWAYS DIM
PINPOINT TEST "C" COMPASS DISPLAY IS INACCURATE
Compass Zone Selection:
WARNING:
There are 2-different types of mirror setting controls the first type is done by pressing and holding an external switch, the other type is done using a paperclip to press an internal switch.
a. Press the switch on the right side of the mirror until "ZONE" is displayed.
b. Now press and release the switch on the right side of the mirror until the correct zone for your region is displayed (1 through 15 ). Use the map to select the correct zone.
WARNING:
This setting must be adjusted every time a customer passes through 3 zones.
Compass Calibration
a. Find a large open area with no overhead power lines or large metallic structures or objects.
WARNING:
The area must be large enough to drive the vehicle in a circle several times.
b. Press and hold the switch on the left side of the mirror until "CAL" appears.
c. Drive the vehicle slowly in a circle until the word "CAL "disappears from the display, approximately two to four complete circles in the same direction.
NOTE:
This calibration is necessary when the mirror with compass is initially installed in a vehicle and when a vehicle travels through 3 or more zones.
CAUTION:
Magnets and large metal structures can interfere with the operation and accuracy of the compass.
PINPOINT TEST "D" NO COMPASS DISPLAY
PINPOINT TEST "E" "OC" IS SHOWN ON TEMPERATURE DISPLAY
If the temperature display shows "OC", the sensor is either internally an open circuit or there is an open in one of the sensor wires.
Temperature Sensor Resistance/Voltage Values
PINPOINT TEST "F" "SC" IS SHOWN ON TEMPERATURE DISPLAY
If the temperature display shows "SC", the sensor is either shorted internally, the sensor signal (+5) wire is shorted to B+, or the sensor wires are shorted together.
PINPOINT TEST "G" TEMPERATURE READING IS INACCURATE
The temperature sensor is mounted in front of the bumper area. Due to its location, the sensor can be affected by road or engine heat during idling or slow driving. Adaptation to ambient temperature takes place in steps through time filtering and depends on the prevailing driving conditions and amount of temperature change. Because of the filtering, the display will take up to 3 minutes to update to ambient temperature if the current ambient temperature is higher than the previous time the vehicle was turned on.
NOTE:
Place the temperature sensor in a cup of Ice water or heated water to check its range of operation and compare it to an analog thermometer.
WARNING:
The outside temperature indicator is not designed to serve as an ice warning device and is not suitable for that purpose. Indicated temperatures just above freezing do not guarantee that the road surface is free of ice.
Temperature Sensor Resistance/Voltage Values
PINPOINT TEST "H" SOME LED SEGMENTS OF DISPLAY DO NOT WORK
PINPOINT TEST "I" DISPLAY DOES NOT DIM AT NIGHT
PINPOINT TEST "J" HOMELINK INOPERATIVE
ELECTRICAL CONNECTOR 7-Pin Connector to Mirror Head
PARTS INFORMATION