System Description
The head-up display (HUD) is a secondary display system that optically
projects critical vehicle information off of the windshield. The information
may be displayed in English or Metric units. The display system is composed
of the HUD module, instrument cluster, control switch, and windshield.
The HUD displays the following images:
| • | The speedometer reading |
| • | The turn signal indicators |
| • | The high beam indicator ISO symbol |
| • | The low fuel ISO symbol |
| • | The check gages indicator |
| • | The radio frequency, including AM, FM, CD, and Tape |
System Operation
The head-up display (HUD) system has an electric tilt adjust that is
controlled by the HUD up/down switch. Moving this switch directs the motor
to move the HUD image up or down on the windshield. The HUD is also equipped
with automatic dimming which gives the HUD the ability to sense outside light
conditions, via a photo-cell and automatically adjusts the brightness levels.
You may manually adjust the HUD image brightness by moving the HUD dim switch.
The HUD up/down switch and the HUD dim switch are located to the left of
the steering column.
The HUD module uses various inputs in order to display the images. Below
you will find a list of the HUD images and their input source:
| • | Speedometer-The speedometer receives it's input from the
powertrain control module (PCM). |
| • | Turn Signals-The turn signal indicators are driven by the
exterior lighting subsystem. |
| • | High Beam-The DIM monitors the high beam switch input. |
| • | Check Gauges-The IPC monitors different inputs and sends
the message to illuminate. |
| • | Low Fuel - The IPC monitors the fuel input and sends a message
to illuminate. |
| • | Radio Display - The radio sends the information to the HUD. |
