The head up display (HUD) is a secondary display system that optically projects vehicle information onto the windshield directly in front of the driver. In order for the HUD to operate properly the following conditions must be present:
| • | The ambient temperature is between -40°C (-40°F) and 85°C (185°F). |
| • | The system voltage is above 9.0V. |
| • | The BCM detects that the ignition is in the RUN position or the vehicle is in RAP mode. |
During startup the HUD will display GP for 3 seconds. The HUD sends a class 2 message to the IPC indicating whether the HUD is on or off. The IPC does not send warning messages to the HUD when the HUD is not on.
The HUD is capable of displaying text in the following 3 languages:
| • | English |
| • | French/Canadian |
| • | Spanish |
When the battery is disconnected and then reconnected, the HUD defaults to stored information supplied by the BCM via class 2 messages.
There are 3 switches that control the HUD:
| • | Up/Down Switch: The HUD contains an electric tilt adjust that moves the HUD image vertically on the windshield based on the switch position. |
| • | Dimmer Switch: The HUD contains a dimming feature that adjusts the brightness level of the HUD and turns the HUD image on and off. |
| • | Page Switch: The HUD contains four different screens that can be viewed: |
Pages
The display format for each HUD page is indicated in the following table:
Parameter | Page 1 | Page 2 | Page 3 | Page 4 | Display Time Interval |
|---|---|---|---|---|---|
CHECK DIC | X | X | X | X | 5 seconds |
Compass | X | X | Continuous | ||
CRUISE SPEED SET XXX | X | X | X | X | 5 seconds |
English/Metric | X | X | X | X | Continuous |
High Beam indicator | X | X | X | X | Continuous |
Navigation | X | Continuous | |||
Outside Temperature | X | Continuous | |||
PRNDL or Tap Up/Tap Down | X | X | X | X | Continuous |
Radio Information | X | X | X | X | 5 seconds |
Stealth Mode | X | Continuous | |||
TRACTION SYSTEM ACTIVE | X | X | X | X | 5 seconds |
TRACTION SYSTEM OFF | X | X | X | X | 5 seconds |
Turn Signal indicators | X | X | X | X | Continuous |
Upshift indicator | X | X | X | X | Continuous |
Vehicle Speed | X | X | X | X | Continuous |
YAW CONTROL ACTIVE | X | X | X | X | 5 seconds |
The HUD displays the different pages, audio information and warning messages based on priority. There are 5 different levels of priority. Priority #5 is the highest priority. Priority #1 is the lowest priority. If there are 2 or more items that are to be displayed with the same priority, the HUD will display the first message for 3 seconds, then display nothing for 0.5 seconds, and then display the second message for 3 seconds.
| • | Priority #1 |
| Pages 1-4 |
| • | Priority #2 |
| • | All audio information |
| • | CRUISE SET SPEED XXX message |
| • | TRACTION SYSTEM OFF message |
| • | Priority #3 |
| • | CHECK DIC message |
| • | STEALTH MODE ON message |
| • | STEALTH MODE OFF message |
| • | Priority #4 |
| Navigation information |
| • | Priority #5 |
| • | TRACTION SYSTEM ACTIVE message |
| • | YAW CONTROL ACTIVE message |
Parade Mode and Heater??
Check DIC Indicator
| • | The HUD displays the Check DIC indicator based on a class 2 message from the DIC when one of the following indicators is displayed in the DIC: |
| • | The Check DIC indicator displays in the center of the HUD image. The vehicle speed, turn signal indicators, and the high bean indicator shrink and move to the top of the HUD display. The PRNDL or Tap Up / Tap Down and upshift indicators shrink and move to the bottom of the HUD display. |
Compass
| • | The HUD displays 8 different compass directions (N, NE, E, SE, S, SW, W NW) based on a class 2 message indicating the current direction from the DIC. The DIC monitors the signal circuit of the compass module??? |
| • | During compass calibration or invalid information the HUD compass display blanks. |
| • | The compass direction is temporarily replaced at the bottom of the HUD display when the radio information or a warning message is displayed. |
| • | When the Check DIC indicator is displayed, the compass direction shrinks and moves to the bottom of the HUD display. |
English/Metric
| • | The HUD displays English or Metric based on a class 2 message indicating the current setting from the DIC. The DIC monitors the Eng/Met button on the DIC switch. |
| • | The last setting is saved when the vehicle is turned off. After a battery reconnect, the HUD defaults to the point of sale setting. |
High Beam Indicator
| • | The HUD displays the high beam indicator based on a class 2 message indicating that the high beams are active from the BCM. |
| • | When the radio information or a warning message is displayed the high beam indicator shrinks and moves to the top of the HUD display. |
| • | When the Check DIC indicator is displayed, the high beam indicator shrinks and moves to the top of the HUD display. |
Navigation
The navigation system displays the following information:
| • | The direction/maneuver arrow and destinations symbols |
| • | Arbitrary text for directions |
| • | The distance to next maneuver |
| • | The distance count down bar |
| • | The compass heading |
Outside Temperature
| • | The HUD displays the outside temperature based on a class 2 message from the DIC. The DIC monitors the ??? |
| • | When the temperature drops below ???°C (???°F), the word ICE displays for ??? minutes instead of the outside temperature. |
| • | The outside temperature is temporarily replaced at the bottom of the HUD display when the radio information or a warning message is displayed. |
| • | When the Check DIC indicator is displayed, the outside temperature shrinks and moves to the bottom of the HUD display. |
PRNDL or Tap Up/Tap Down
| • | The HUD displays the gear position of the vehicle based on a class 2 message from the DIC. The DIC monitors the ??? |
| • | The HUD displays P, R, N, or D until the Tap Up or Tap Down buttons are pressed on the steering wheel. When these buttons are pressed the HUD displays 1,2,3, or 4. |
| • | P (Park) is displayed until the vehicle is put in gear. |
| • | The PRNDL or Tap Up / Tap Down is temporarily displayed at the bottom of the HUD display when the radio information or a warning message is displayed. |
| • | When the Check DIC indicator is displayed, the PRNDL or Tap Up / Tap Down shrinks and moves to the bottom of the HUD display. |
Radio
| • | The HUD displays the following radio information depending on the current radio settings: |
| - | Frequency |
| - | Band |
| - | CD Track # |
| - | Current Disk # (for multiple disk player) |
| - | Cassette icon (when cassette is playing) |
| • | When the radio station, CD, or cassette are changed, the HUD displays the new information for 5 seconds. |
| • | The radio information replaces the PRNDL or Tap Up / Tap Down, the upshift indicator, the outside temperature display, and the compass direction at the bottom of the HUD display. |
| • | The HUD receives a class 2 message indicating a change in the setting from the radio. |
| • | The HUD image blanks when the radio is seeking or scanning. |
Stealth Mode
Stealth mode is only available at night when I/P illumination is enabled (not in parade mode). Stealth mode turns off all IPC backlighting and pointer illumination. All IPC telltales and other illumination controlled by the IPC dimming switch remain enabled. When stealth mode is entered, the HUD displays STEALTH MODE ON. When stealth mode is exited, the HUD displays STEALTH MODE OFF.
The HUD sends a class 2 message to the IPC to enable stealth mode when the IPC illumination is on. When the IPC receives the class 2 message indicating that stealth mode is on from the HUD, the IPC turns off the gage backlighting and pointer illumination so the driver uses the HUD to drive. When the HUD is in stealth mode and the ignition is cycled from RUN to OFF and back to RUN, the HUD displays Page 1 and does send the stealth mode class 2 message to the IPC from the HUD. The HUD requires the illumination mode of the vehicle in order to enter stealth mode. The HUD receives a class 2 message indicating daytime mode or night mode from the BCM.
Turn Signals Indicators
| • | The HUD displays the left and right turn signal indicators based on a class 2 message indicating the turn signal or the hazard status from the BCM. |
| • | The turn signal indicators shrink and move to the top of the HUD display when the radio information or a warning message is displayed. |
| • | When the Check DIC indicator is displayed, the turn signal indicators shrink and move to the top of the HUD display. |
Upshift Indicator
| • | The HUD displays the upshift indicator when it receives a class 2 message indicating that the vehicle needs to be shifted into a higher gear from the PCM. |
| • | The upshift indicator replaces the gear position display. |
| • | The radio information and warning messages replaces the upshift indicator temporarily at the bottom of the HUD display. |
| • | When the Check DIC indicator is displayed, the upshift indicator shrinks and moves to the bottom of the HUD display. |
Vehicle Speed
| • | The HUD receives a class 2 message indicating the vehicle speed from the PCM. |
| • | The HUD is capable of displaying vehicle speed up to 481 km/h (299 mph). |
| • | The HUD does not display above 0 km/h (0 mph) when the incoming speed is 0 km/h (0 mph). |
| • | The HUD receives a class 2 message indicating the vehicle speed from the EBCM when it does not receive the vehicle speed from the PCM. |
| • | When the HUD detects a loss of the vehicle speed from both the PCM and the EBCM, the HUD blanks. |
| • | The vehicle speed shrinks and moves to the top of the HUD display when the radio information or a warning message is displayed. |
| • | When the Check DIC indicator is displayed, the vehicle speed shrinks and moves to the top of the HUD display. |
Warning Messages
The HUD displays the following messages:
| • | CRUISE SPEED SET XXX |
| - | The HUD displays this message for 3.5 seconds based on a class 2 message indicating the state of the cruise speed from the PCM. |
| - | The HUD displays the cruise speed (XXX) in English or Metric units. |
| • | TRACTION SYSTEM ACTIVE |
| The HUD displays this message for 2 seconds based on a class 2 message indicating that the traction control system is engaged from the EBCM. |
| • | TRACTION SYSTEM OFF |
| The HUD displays this message for 3.5 seconds based on a class 2 message indicating that the traction control system is not engaged from the EBCM. |
| • | YAW CONTROL ACTIVE |
| The HUD displays this message for 2 seconds based on a class 2 message indicating that the stability control system is engaged from the BCM. |
