Heads Up Display (HUD) Module

The IPC has a dedicated space in the EVIC Main Menu for the HUD. The IPC stores and recalls the setting of the HUD over ignition cycles. The IPC HUD menu contains the following parameters:

• Display ON
• Brightness
• Content and Layout - Not available when the vehicle is moving 5 mph or greater.
• Display Height

The HUD can be accessed and controlled during all driving conditions.

When the driver selects the "HUD Display ON" option from the IPC, the IPC sets an internal signal to the HUD module to turn on the display. The IPC then drives the HUD graphics.

Speedometer - The IPC uses an internal signal to drive the correct speedometer information to the HUD module.

Road Speed Limit Sign - If equipped with the traffic sign system and it is enabled, the IPC uses several signals from the Central ADAS Decision Module (CADM) to display the road speed limit information. When the traffic sign information system is disabled or not equipped, the IPC uses a telematics signal from the DSM to display the speed limit information.

Turn by Turn Navigation and Road Shields - The IPC obtains signals from the DSM for both systems.

Phone Information - Phone information is received from DSM.

Gear Display - Gear display information is received from the Transmission Control Module (TCM).

The HUD also displays information relevant for the Adaptive Cruise Control (ACC) and Forward Collision Warning (FCW) received from the CADM.

The HUD will transmit the following LIN signals to the IPC as feedback values:

• HUD dimming value
• HUD light sensor value
• HUD mirror position
• HUD mirror movement status

When the HUD module detects a fault relative to the HUD system, the DTC is set and stored within the IPC. If the IPC detects a fault on the LIN message HUD module, if the HUD module detects an internal fault or the HUD module requests a LVDS reset then the IPC will store a DTC.