System Operation
System Diagram
Item | Description |
---|---|
1 | BCM |
2 | GWM |
3 | SODR |
4 | SODL |
5 | DSM |
6 | PCM |
7 | HVAC module |
8 | RH steering wheel switch |
9 | HUD module |
10 | Rain sensor |
11 | IPC |
12 | ACM |
13 | Displays |
14 | Adaptive cruise control |
15 | DTE/Low fuel indication |
16 | Forward collision warning |
17 | Clock/outside air temperature |
18 | Electric Vehicle (EV) range indication |
19 | Active driver assist system display |
20 | Digital speedometer/speed sign display |
21 | BLIS |
22 | LH |
23 | RH |
24 | Turn indicators |
25 | Navigation |
26 | APIM |
27 | SCCM |
28 | IPMA |
29 | SIMA |
Network Message Chart
Module Network Input Messages - HUD Module
Broadcast Message | Originating Module | Message Purpose |
---|---|---|
Adaptive cruise control follow mode display | IPMA | Input used to control the ACC component in the active driver assist system display. |
Adaptive cruise control gap distance display | IPMA | Input used to control the ACC component in the active driver assist system display. |
Adaptive cruise control resume display | IPMA | Input used to control the vehicle stopped displayed in the ACC component of the active driver assist system display. |
Adaptive cruise control stop mode | IPMA | Input used to control the vehicle stopped displayed in the ACC component of the active driver assist system display. |
Adaptive cruise control target distance display | IPMA | Input used to control the ACC component in the active driver assist system display. |
Adaptive cruise control warning request | IPMA | Input used to control the ACC component in the active driver assist system display. |
Ambient light sensor data | SCCM | Input used to control the base illumination intensity based on raw outside light level. |
Ambient light sensor status | SCCM | Input used to control the base illumination intensity based on lighting level at the road. |
Audio-navigation switch button states | SCCM | Input used to control the audio and phone displays. |
Audio source status | ACM | Input used to control the audio and navigation displays. |
Audio system response status | ACM | Input used to control the audio and navigation displays. |
Camera configuration | IPMA | Input used to enable the lane keeping system display. |
Cross traffic alert left status | SODL | Input used to display the BLIS indication. |
Cross traffic alert right status | SODR | Input used to display the BLIS indication. |
Cruise control override | PCM | Input used to control the cruise control and ACC displays. |
Cruise control set speed | PCM | Input used to control the cruise control and ACC displays. |
Cruise control status | PCM | Input used to control the cruise control and ACC displays. |
Day/night status | BCM | Input used to switch the illumination from daytime to nighttime intensity. |
Electric Vehicle (EV) range display | PCM | Input used to control the Electric Vehicle (EV) drive range indication display. |
Forward collision warning indicator request | IPMA | Input used to control the forward collision warning display. |
Forward distance alert warning indicator request | IPMA | Input used to control the distance alert display. |
Fuel range display | IPC | Input used to display the DTE. |
Global clock data | BCM | Input used to control the clock display. |
HUD adjustment menu request | IPC | Input used to control the HUD positioning on the windshield. |
HUD brightness menu request | IPC | Input used to control the HUD illumination menu display. |
HUD settings active | IPC | Input used to turn on the HUD positioning menu. |
Illumination dimming level | BCM | Input used to control the dimming level based on the overall vehicle backlighting selection. |
Lane keeping system status display | IPMA | Input used to control the lane keeping system display. |
Language selection | IPC | Input used to change the language displayed. |
Left turn lamp on request | BCM | Input used to control the RH turn, LH turn and hazard indicators. |
Memory command | DSM | Input used to control the memory settings. |
Metric display | IPC | Input used to control the digital speedometer when the metric display is selected. |
Outside air temperature | HVAC module | Input used to display the outside air temperature. |
Right turn lamp on request | BCM | Input used to control the RH turn, LH turn and hazard indicators. |
Side obstacle sensor status-left | SODL | Input used to display the BLIS indication. |
Side obstacle sensor status-right | SODR | Input used to display the BLIS indication. |
Side obstacle left warning | SODL | Input used to display the BLIS indication. |
Side obstacle right warning | SODR | Input used to display the BLIS indication. |
Steering wheel message center switch data | SCCM | Input used to control the message center and HUD navigation and functions. |
Temperature unit selection | IPC | Input used to switch the outside air temperature display from English to metric. |
Traffic jam assist status display | IPMA | Input used to control the lane centering assist indication display. |
Traffic jam assist warning request | IPMA | Input used to control the lane centering assist indication display. |
Traffic sign recognition status request | IPMA | Input used to control the speed sign indication display. |
Transmission gear display | PCM | Input used to display the manual selections in the gearshift display. |
Transmission gear display mode | PCM | Input used to display the PARK (P), REVERSE (R), NEUTRAL (N) and DRIVE (D) in the gearshift display. |
Trip unit selection | IPC | Input used to switch the trip display from English to metric. |
Vehicle speed display | IPC | Input used to display the vehicle speed. |
Voice recognition status | APIM | Input used to control the phone displays. |
HUD
NOTE: When the HUD is removed and reinstalled, the instrument panel is removed, reinstalled or replaced, a new HUD is installed or a new windshield is installed, the HUD must be calibrated to correctly display the image on the windshield. Carry out the HUD module calibration using the engineering test mode.
For addtional information,
Refer to: Head Up Display (HUD) Module Calibration (419-03C Collision Warning and Collision Avoidance System, General Procedures).
Brightness Controls
The HUD illumination is controlled by two sets of inputs: the base HUD background and driver selectable illumination level. The base HUD background display uses ambient day/nighttime lighting input, ambient lighting of the road ahead of the vehicle and an overall vehicle backlighting dimming level to determine the display illumination level. The driver has the ability to select a desired illumination level from 1 to 13, which is selectable through the HUD menu. When a forward collision warning event is in progress, the illumination intensity is increased to provide an increased level of severity to the visual warning.
The HUD module uses the following inputs to control the illumination brightness:
The base HUD background brightness is determined by the day/night status and the illumination dimming level messages sent from the BCM over the HS-CAN1 to the GWM. The GWM sends the day/night status and the illumination dimming level messages to the HUD module over the HS-CAN3.
The HUD also uses the ambient light sensor status and the ambient light sensor data messages sent from the SCCM to the GWM over the HS-CAN2 to establish a base illumination level. The GWM sends the ambient light sensor status and the ambient light sensor data messages to the HUD module over the HS-CAN3.
Once the HUD has established a base illumination level, the driver can select a desired illumination level. When the driver has selected to change the intensity level, the HUD module receives the HUD brightness menu message from the IPC over the HS-CAN3.
Display Adjustments
The HUD provides adjustment settings to allow the driver to reposition the display on the windshield to provide better viewing. The adjustments allow for vertical and rotational adjustments through the HUD menu.
The HUD module receives the HUD settings active and HUD adjustment menu request messages from the IPC over the HS-CAN3.
The HUD module receives the steering wheel message center switch data message from the GWM over the HS-CAN3.
The GWM receives the steering wheel message center switch data message from the SCCM over the HS-CAN2.
Display Controls
The HUD features are controlled through the RH steering wheel switch. The HUD module receives all switch control inputs from the GWM over the HS-CAN3. The GWM receives the steering wheel message center switch data message from the SCCM over the HS-CAN2.
Engineering Test Mode
To enter the HUD engineering test mode, begin with the ignition OFF. Press and hold the RH steering wheel switch OK button. Place the ignition ON and continue to hold the button for approximately 10 seconds until the HUD displays ET in the upper LH corner of HUD image. Release the OK button within 5 seconds of engineering test mode being displayed. Press the up or down arrow buttons to navigate through each of the display windows. To exit the HUD engineering test mode, place the ignition in OFF.
English/Metric, Language And Unit Selections
The HUD English/metric, language and unit selections are controlled by messages sent from IPC. The IPC is the controlling module for the HUD selections based on the driver input. The IPC and the HUD English/metric, language and unit selections are displayed the same.
The HUD module receives the language selection, the temperature unit selection and the trip unit selection from the IPC over the HS-CAN3.
HUD Displays
Active Driver Assist
The active driver assist system display is located in the lower portion in the center of the HUD just above the speedometer display area.
The HUD provides the active driver assist display to indicate the following:
BLIS/ CTA
The HUD provides BLIS indicators to warning the driver that a vehicle has entered the BLIS/ CTA monitored zones. The BLIS indication is displayed in the LH and RH sides of the HUD. The display area is also shared with the LH, RH and hazard indication area. If the turn or hazard indicators are on and a BLIS/ CTA alert is received, the HUD turns off the turn or hazard indication and displays the applicable BLIS warning.
The HUD module receives all messages from the GWM over the HS-CAN3.
The GWM receives the cross traffic alert left status, side obstacle sensor status-left and side obstacle left warning messages from the SODL over the MS-CAN.
The GWM receives the cross traffic alert right status, side obstacle sensor status-right and side obstacle right warning messages from the SODR over the MS-CAN.
Clock
The HUD provides a clock display that is controlled by a global vehicle clock strategy in the BCM. The HUD module receives the global clock data from the GWM over the HS-CAN3. The GWM receives the global clock data from the BCM over the HS-CAN1.
Cruise Control/ACC With Stop And Go
The ACC display provides the gap and follow distance (as a graphical distance display) as well as the set speed (shown below the ACC RTT indicator).
The stop and go feature (part of the ACC) provides vehicle braking, stopping and accelerating based on the status of the vehicle in front. The display provides a graphical distance display with increasing or decreasing levels of fill depending on the vehicle's distance from the vehicle in front of it.
The HUD module receives all messages required to control the cruise control/ ACC and stop and go displays from the GWM over the HS-CAN3.
The GWM receives the cruise control override, cruise control set speed and the cruise control status messages from the PCM over the HS-CAN1.
The GWM receives the following messages from the IPMA over the HS-CAN2.
Digital Speedometer
The HUD provides a digital vehicle speed display in the lower center of the HUD. When the digital speedometer is selected on in the HUD, the speedometer in the IPC only shows a minimal detail. The HUD module receives the vehicle speed display and metric display messages from the IPC over the HS-CAN3.
Distance Alert
The active driver assist display provides a distance alert as part of the ACC displays to indicate the distance to the vehicle in front and visually provide warning when the vehicle is too close. The graphical distance display on the road becomes a solid image that increases or decreases fill based on the distance to the vehicle in front of it. As the vehicle approaches a distance requiring an alert, the display fill turns from amber to red.
The HUD module receives the forward distance alert warning indicator request message from the GWM over the HS-CAN3. The GWM receives the forward distance alert warning indicator request message from the IPMA over the HS-CAN2.
DTE - Electric Vehicle (EV) Range
The HUD provides an Electric Vehicle (EV) range display indicating the approximate distance the vehicle can travel on the current battery charge. The indication is displayed in the lower RH corner of the HUD, above the DTE display.
The HUD receives the EV range display message from the GWM over the HS-CAN3. The GWM receives the EV range display message from the PCM over the HS-CAN1.
DTE - Low Fuel
The HUD provides a DTE display that ranges from 0 to 999 km/miles in the lower RH corner of the HUD. The display provides both the DTE and a low fuel warning that changes the fuel icon from white to amber. The HUD module receives the fuel range display and fuel level warning messages from the IPC over the HS-CAN3.
Forward Collision Warning Alert
The HUD provides a forward collision warning alert display, which consists of a single red bar across the center of the display, to alert the driver of a possible front collision event. All other selected HUD displays will be hidden when the forward collision alert is displayed.
The HUD module receives the forward collision warning indicator request message from the GWM over the HS-CAN3. The GWM receives the forward collision warning indicator request message from the IPMA over the HS-CAN2.
Infotainment-Navigation And Phone
The HUD provides audio, navigation and phone information. The HUD receives the audio-navigation switch button states message from the GWM over the HS-CAN3. For additional audio, navigation and phone information,
Refer to: Information and Entertainment System (415-00 Information and Entertainment System - General Information, Diagnosis and Testing).
The HUD receives the voice recognition status message from the APIM over the HS-CAN3.
The HUD module receives the audio source status and audio system response status messages from the ACM over the HS-CAN3.
The GWM receives the audio-navigation switch button states message from the SCCM over the HS-CAN2.
Lane Centering (Traffic Jam) Assist
The HUD provides a lane centering indicator in the center display along with the adaptive cruise control and lane keeping system displays. The displays indicate the system is active or cancelled, or notifies the driver when intervention is required.
The HUD module receives the traffic jam assist status display and traffic jam assist warning request messages from the GWM over the HS-CAN3. The GWM receives the traffic jam assist status display and traffic jam assist warning request messages from the IPMA over the HS-CAN2.
Lane Keeping System
The
lane keeping system combines the lane keeping alert and lane keeping
aid systems. The lane keeping alert system alerts the driver of
unintentional drifting outside of the lane and the lane keeping aid
system corrects the vehicle steering to keep the vehicle in the center
of the lane. The HUD provides a
lane keeping display with a view of the vehicle in the middle of a lane
with right and left lane markers to indicate the vehicle position with
relation to the lane markings and arrows on either side of the vehicle.
The lane markers and arrows change color based on the vehicle position
within the lane and any required intervention to keep the vehicle in the
center of the lane. For additional information on the lane keeping
system operation,
Refer to: Lane Keeping System - System Operation and Component Description (419-07 Lane Keeping System, Description and Operation).
The HUD module receives the camera configuration and lane keeping system status display messages from the GWM over the HS-CAN3.
The GWM receives the camera configuration and lane keeping system status display messages from the IPMA over the HS-CAN2.
LH, RH Turn And Hazard
The LH, RH turn and hazard indication displayed in the HUD is redundant to the LH, RH turn and hazard indication displayed in the IPC. The HUD displays the LH, RH turn and hazard indication in the lower LH and RH sides of the HUD screens. The display area is also shared with the BLIS indication, which takes precedence over the turn or hazard indication.
The HUD module receives the left turn lamp on request and right turn lamp on request messages from the GWM over the HS-CAN3. The GWM receives the left turn lamp on request and right turn lamp on request messages from the BCM over the HS-CAN1.
Memory Set/Recall
The HUD
provides the ability for the driver to retain personalized settings for
up to 3 drivers. For additional information related to the vehicle
memory features,
Refer to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).
The HUD receives the memory command message from the GWM over the HS-CAN3.
The GWM receives the memory command message from the DSM over the MS-CAN.
Outside Air Temperature
The HUD provides an outside air temperature display in the lower LH corner of the display next to the clock. The Ambient Air Temperature (AAT) sensor is hardwired to the PCM through separate input and return circuits. The PCM provides a reference voltage to the Ambient Air Temperature (AAT) sensor and monitors the change in voltage resulting from changes in resistance as determined by outside air temperature.
The PCM is programmed to update the messaged outside temperature data at different rates depending on several criteria (current engine temperature, engine off time and vehicle speed) to prevent false temperature displays due to a condition known as heat soaking. Heat soaking is where the outside air temperature is hotter in the location of the Ambient Air Temperature (AAT) sensor than the actual outside air temperature.
The PCM sends the ambient air temperature data to the GWM through the HS-CAN1. The GWM sends the ambient air temperature data message to the HVAC module over the MS-CAN. The HVAC module sends the filtered outside air temperature data through the GWM to the HUD module over the HS-CAN3.
Speed Sign Display
The HUD provides a speed sign display based on the traffic sign recognition data received from the IPMA. The HUD module receives the traffic sign recognition status request message from the GWM over the HS-CAN3. The GWM receives the traffic sign recognition status request message from the IPMA over the HS-CAN2.
Transmission Gear
The HUD provides a transmission gear display just to the left of the digital speedometer in the lower center of the HUD to indicate what gear has been selected. The HUD module receives the transmission gear display and transmission gear display mode messages from the GWM over the HS-CAN3. The GWM receives the transmission gear display and transmission gear display mode messages from the PCM over the HS-CAN1.
Component Description
HUD Module
The HUD provides the driver with an alternative view of the driver information and forward collision warnings on the windshield, at the driver's forward viewpoint. The HUD module receives all appropriate messages on the HS-CAN3. Whenever a new HUD is installed, the HUD module requires a PMI.
When the HUD is removed and reinstalled, the instrument panel is removed, installed or replaced, a new HUD is installed or a new windshield is installed, the HUD module must be calibrated to correctly display the image on the windshield.
Refer to: Head Up Display (HUD) Module Calibration (419-03C Collision Warning and Collision Avoidance System, General Procedures).
HUD Control Switch
The HUD functions are controlled using the upper RH steering wheel switch, through the IPC message center menu. The RH steering wheel switch connects to the SIMA. The SIMA is connected to the SCCM through a private CAN. The SCCM receives the switch signals from the SIMA over the private CAN, then sends the switch signals to the IPC through the GWM over the HS-CAN3 to operate the HUD selections in the message center.
The front outboard and rear safety restraints in the vehicle are combination lap and shoulder belts.
Insert the belt tongue into the proper buckle (the buckle closest to the direction the tongue is coming from) until you hear a snap and feel it latch. Make sure that you securely fasten the tongue in the buckle. To unfasten, press the release button and remove the tongue from the buckle.