ELECTROCHROMATIC Automatic Dimming Mirror

The electrochromic automatic dimming mirror uses a microprocessor with a built-in self-test capability. Activation is triggered by a switch accessible on the mirror assembly housing. A signal from the mirror/autolamp system that the mirror assembly functions properly, determines that all outputs and inputs are working as designed and that the microprocessor will respond correctly.

With the ignition switch OFF and the gearshift lever in PARK or NEUTRAL, push the self-test buttons (auto mirror ON, manual dim and autolamp ON) simultaneously. The auto mirror ON, manual dim and autolamp ON indicators will blink on and off for five seconds. If the mirror assembly microprocessor is functioning properly it will proceed to the external diagnostics. If the above condition does not occur, then possibly the circuits connected to head lamp switch power input, terminal no. 2 (Orange/White) wires are open and/or ground, (Black) wire is open, see WIRING DIAGRAMS .

NOTE: If the following procedure is not started within 15 seconds, the mirror will default to the power-up state.

The following fault modes are for external diagnostics and are in addition to the internal self test. After the mirror assembly completes the 5-second internal self test, the auto mirror and autolamp push-button indicators will blink on and off.
- Turn the ignition switch to the RUN position. If the manual dim push-button indicator does not illuminate at a steady state and the mirror does not darken, then the circuit to ignition run input, terminal no. 1 (Red/Yellow) wires are open or disconnected.
- If autolamp status indicator is illuminated, autolamp ON push-button indicator illuminates at a steady state and the head lamps do not switch on, then the circuit connected to the exterior lamps relay output, terminal no. 5 (White/Purple) wires are open or the relay is disconnected or defective.
- Place the gearshift lever in REVERSE. If the dim push-button indicator does not extinguish and if the mirror does not return to the full bright condition, then the circuit connected to the reverse override input, terminal no. 4 (Black/Pink) wires are open or the backup lamp circuit is disconnected or damaged.