Heads Up Display Unit: Description and Operation

The Head-Up Display (HUD) system projects frequently used driver information near the front of the vehicle as viewed from the driver's seat. During operation, information displayed by the HUD system includes: a digital speedometer operating in both miles per hour or kilometers per hour, Turn Indicators, HI Beam Indicator, Low Fuel Indicator, Oil Pressure Warning Indicator, Engine Coolant Temperature Indicator and a Battery Charge Indicator.

The HUD unit converts this information to the digital speed display projected onto the windshield.

IMPORTANT: For optimal HUD performance, a HUD specific windshield must be used whenever the windshield is replaced.

The HUD system consists of a HUD specific windshield, the HUD unit, and the HUD Dimmer Switch. The HUD unit and HUD Dimmer Switch are both connected to the instrument panel wiring harness.

The HUD Dimmer Switch provides power to the HUD unit, varies the intensity of the display image, and controls the motor driven mirror that varies the height of the display image. The HUD Dimmer Switch is back lit. The intensity of the back lighting is controlled by the dimmer control on the Headlight Switch. The Headlight Switch along with the HUD unit also control night brightness of the display image. With the Headlight Switch in "PARK" or "HEAD," the HUD unit will dim.

The HUD unit will perform a self test when first activated. If the HUD Dimmer Switch is on when the Ignition Switch is turned to "RUN," the HUD unit will project the turn indicators, HI Beam Indicator, Low Fuel Indicator, Check Gauges Indicator, km/h Indicator, mph Indicator, and all segments of the digital speedometer for approximately 3.5 seconds. After this time, the HUD unit will begin normal operation. A self-test, identical to the one previously described, will also occur when the HUD Dimmer Switch is moved out of the "OFF" position after the Ignition Switch is turned to "RUN."