Information System
NAVIGATIONA five-inch Thin Film Transistor screen mounted in the instrument cluster projects color navigation information into the center of the speedometer. The information includes maps, turn identification, selection menus and instructions. The system includes a variety of choices for selecting destinations and routes.
The information is displayed in map format, as turn by turn instruction or a combination of the two. The system also provides audio prompts through the vehicle's audio system. The systems audio will override all other audio outputs, with the exception of the Hands Free Cell Phone, to the front speakers that are active at the same time. Spoken prompts are recordings of a human voice. The system uses a Global Positioning System (GPS) antenna mounted under the instrument panel to collect satellite data to compute the position of the vehicle. A navigation unit uses the satellite data to translate the vehicle location to latitude and longitude coordinates. It combines the latitude and longitude with proprietary map data from a DVD unit to perform all system calculations and display formatting. A single DVD disc contains map information for the entire United States. The DVD (navigation) unit is mounted in the covered floor storage compartment at the left rear of the vehicle.
INSTRUMENT PANEL SWITCH POD
The Switch Pod Assembly is located just to the right of the cluster in the Instrument Panel. The Switch Pod Assembly consists of the EVIC buttons, the Navigation buttons (if equipped), Hazard switch, Vehicle Theft Security indicator, and an Analog Clock. The EVIC function buttons are labeled US/M, MENU, STEP, and RESET. The Navigation function buttons are labeled NAV, CANCEL, ENTER, (scroll left), (scroll up), (scroll right), and (scroll down). The Vehicle Theft Alarm light is a red oval located under the EVIC reset button. The Analog Clock consists of an hour and minute hands with one time adjust button. The Hazard switch is designated with a red triangle and is a push on push off switch.
ELECTRONIC VEHICLE INFORMATION CENTER (EVIC)
The Electronic Vehicle Information Center (EVIC), which is located in the cluster, uses a vacuum fluorescent (VF) display to supply vehicle information.
The EVIC also provides the interface to enable and disable vehicle programmable features when the vehicle is equipped with certain features.
The EVIC function buttons are located in the switch pod.
The EVIC receives data over the PCI bus, communicating with the:
- Body Control Module (BCM).
- The BCM supplies most of the information that the EVIC displays.
- The EVIC receives all display requests over the PCI bus.
- Integrated Power Module (IPM).
- Overhead Console Module referred to as the Compass/Mini-Trip Computer (CMTC).
- The EVIC receives compass heading, average fuel economy and distance to empty information from the CMTC.
- The EVIC also receives Tire Pressure Monitoring Information from either the CMTC or the SKREEM. For complete information, refer to the Tire Pressure Monitoring System further.
- Driver Door Module
VEHICLE INFORMATION DISPLAY
NOTE: The EVIC will not display information for any of the screens for which it did not receive the proper PCI Bus data.
The EVIC displays the following functions:
- Compass direction
- Language type
- Distance to empty
- Average fuel economy
- Distance to service
- Customer programmable Features
The EVIC displays various memory functions based on a PCI bus message from the Driver Door Module (DDM). The EVIC will also display the following driver alert messages with either an amber or red priority indicator lamp:
- TURN SIGNAL ON
- PERFORM SERVICE
- DOOR AJAR (individual or multiple doors)
- LOW or HIGH TIRE(S) PRESSURE (when equipped)
- PEDAL ADJUST DISABLED CRUISE ENGAGED (when equipped)
- PEDAL ADJUST DISABLED VEHICLE IN REVERSE (when equipped)
- WASHER FLUID LOW
- LOW BRAKE FLUID
- LOW FUEL
- MENU IN PARK ONLY (when equipped)
- PUT IN PARK FOR LIFTGATE (when equipped)
- TCS ACTIVE (when equipped)
- SERVICE TCS SYSTEM (when equipped)
- SERVICE TIRE PRESSURE SYSTEM (when equipped)
- TIRE PRESSURE UNAVAILABLE (when equipped)
- SET INHIBITED DUE TO MOTION (when equipped) An audible chime or chimes will accompany any warning messages. Chime requests with an OPEN message are dependent upon vehicle speed.
The EVIC receives the following messages from the Body Control Module (BCM):
- Verification of US/Metric status
- Fuel Economy (Average and Instantaneous)
- Distance to empty
- Distance to service
- Driver warning messages
The EVIC receives the Vehicle Speed message from the powertrain control module.
The EVIC transmits the Current Display message to the BCM.
STEP BUTTON
Use the STEP Button to:
1. Sequentially select one of the displays or blank display in the following order:
- Average Fuel Economy
- Distance to Empty
- Distance to Service Message
- Off (Blank)
2. Set the magnetic variance zone when VARIANCE =X (X =1 -15) is indicated in the VF Display.
3. Select the displayed programmable feature setting. (When equipped.)
MENU BUTTON (EVIC only)
Use the MENU button to sequentially step the EVIC through the programmable features. For complete information of the programmable features and memory messages, refer to the Owner's Manual.
RESET BUTTON
Use the RESET Button to:
1. Clear the trip functions that may be reset.
2. Enter and exit the diagnostic mode.
Pressing the RESET button once will clear the trip function displayed (except Distance to Service) and cause the EVIC to send a PCI Bus beep request to the BCM. If the RESET button is pressed again within 3 seconds, the EVIC will reset ALL of the trip functions. The trip function that may be reset is the Average Fuel Economy.
A reset will only occur if a trip function that may be reset is displayed. Distance to Service is reset in the customer programmable features.
TRAVELER DISPLAY FUNCTIONS
Using the STEP button will change the EVIC between modes of operation and display the appropriate information according to data received from the PCI Bus.
COMPASS
The EVIC displays the compass reading. The EVIC receives the compass information from the overhead console.
COMPASS OPERATION - ALL
Upon ignition on, if the calibration information stored in the CMTC memory is within the normal range, the CMTC will perform in slow Auto-Cal mode. In slow Auto-Cal mode, the CMTC continuously compensates for the slowly changing magnetic field of the vehicle. The compass module detects changes in the vehicle magnetism and makes appropriate internal corrections to ensure proper displayed direction. However, if the calibration information stored in the CMTC memory is not within the normal range at ignition on, the CMTC will enter fast Auto-Cal mode. Auto activation of the fast Auto-Cal mode occurs when the CMTC is subjected to high magnetic field strength levels, which cause all compass readings to be erroneous for a continuous period of five (5) minutes. During fast Auto-Cal, "COMPASS CALIBRATING" will display. Fast Auto-Cal can also be performed manually, by completing one 360° turn in an area free from large metal or metallic objects. When complete, the "COMPASS CALIBRATING" EVIC message will turn off and the compass will function normally.
SETTING MAGNETIC ZONE VARIANCE
Variance is the difference between magnetic North and geographic North. For proper compass function, the correct variance zone must be set. Refer to the Zone Variance map for the correct zone. Follow these steps to check or change the variance zone:
- The ignition switch must be in the On position and the EVIC display must not be blank.
- If the compass data is not displayed, step through until the compass information displays.
- Press and hold the RESET button (approximately 5 seconds) until VARIANCE = XX is displayed. The EVIC will display the variance zone stored in memory and the word VARIANCE.
- Use the RESET button to select the proper variance zone number, 1 through 15.
- After selecting the proper zone number, momentarily press and release the RESET button. The variance zone is then stored in the memory and the EVIC returns to normal operation.
COMPASS CALIBRATION
The compass module has 2 types of auto-calibration; slow-cal and fast-cal. Slow-cal ensures that during normal vehicle operation the compass performs auto-calibration functions to keep the compass sensors in their proper operating range. Whenever the ignition is On and the EVIC receives PCI Bus data indicating that engine RPM is greater than zero, auto-calibration is performed continuously. If the calibration information stored in the compass module memory is not within the normal range after a power-up cycle, the compass will display "COMPASS CALIBRATING". The EVIC will enter into the fast-cal mode until calibration is complete. To enter the compass into Manual Calibration mode, perform the following steps:
- Drive the vehicle to an area away from any large metal objects or overhead power lines.
- Ensure that the proper variance zone is selected. See Setting Magnetic Zone Variance.
- The ignition switch must be in the On position and the EVIC display must not be blank.
- Press the STEP button until the Compass displays in the EVIC.
- Press and hold the RESET button (approximately 10 seconds) until CAL is displayed, then release the button.
- Drive slowly, less than 5 mph (8 km/h) in at least 1 complete 360-degree circle.
- "COMPASS CALIBRATING" will remain illuminated to alert the driver that the compass is in the calibration mode.
- After calibration is complete, "COMPASS CALIBRATING" will turn off.
If the compass appears blank, unable to be calibrated, or the compass displays false indications, the vehicle must be demagnetized. Refer to Compass Demagnetizing.
NOTE: The EVIC will not display information for any of the screens for which it did not receive the proper PCI bus data. Refer to the symptom list in the Overhead Console section for problems related to CMTC.
HOMELINK(R) UNIVERSAL TRANSMITTER
If equipped, the HomeLink Universal Transmitter is integrated into the overhead console. For added security it will operate home security systems that use coded signals known generically as Rolling Codes. The overhead console display provides visual feedback to the driver, indicating which HomeLink transmitter channel button is being pressed. The HomeLink can learn and store up to three separate transmitter radio frequency codes to operate garage door openers, security gates, and security lighting. The HomeLink buttons are marked with one, two, or three dots. For complete information, refer to Universal Transmitter or the Owner's Manual.
TIRE PRESSURE MONITORING SYSTEM (TPMS)
If equipped with the Tire Pressure Monitoring System (TPMS), each of the vehicles four wheels will have a valve stem with a pressure sensor and radio transmitter built in. Signals from the tire pressure Sensor/Transmitter are received and interpreted by the Sentry Key Remote Entry Module (SKREEM). Using the DRBIII(R), go to ANTI-THEFT for the SKREEM data.
A Sensor/Transmitter in a mounted wheel will broadcast an RF frequency indicating its pressure once per minute when the vehicle is in drive mode. To activate the Sensor/Transmitter operation, the required SKREEM speed is 13 mph (20 km/h). Each Sensor/Transmitters broadcast is uniquely coded so that the SKREEM can monitor the states of each Sensor/Transmitter on the vehicle. The SKREEM TPMS does not use a magnet to relearn, it automatically learns while driving after a SKREEM or a Sensor/Transmitter has been replaced.
TRAINING THE SKREEM
If a Sensor/Transmitter is replaced, the vehicle has to be parked for at least 15 minutes for the system to be ready to learn the new Sensor/ Transmitter ID code. The vehicle then must be driven for a minimum of five minutes with a minimum continuous speed above 13 mph (20 km/h). The system will learn the new Sensor/ Transmitter and clear the DTC's automatically. The Sensor/Transmitters are programmed at the assembly plant in this clockwise orientation:
Sensor/Transmitter 1 = Left Front
Sensor/Transmitter 2 = Right Front
Sensor/Transmitter 3 = Right Rear
Sensor/Transmitter 4 = Left Rear
NOTE:
1. If one or all Sensor/Transmitters cannot be trained, check for and avoid RF interference.
2. If one Sensor/Transmitter still cannot be trained, replace it and retry.
3. If all Sensor/Transmitters still fail to train, replace the SKREEM.
PRESSURE THRESHOLDS
The SKREEM will monitor the tire pressure signals from the Sensor/Transmitters and determine if any tire has gone below the low-pressure or above the high-pressure thresholds. Refer to the tables below:
LOW TIRE PRESSURE THRESHOLDS
SYSTEM STATUS INDICATOR/MESSAGE TIRE PRESSURE
ON 179 kPa (26 PSI)*
OFF 207 kPa (30 PSI)*
HIGH TIRE PRESSURE THRESHOLDS
SYSTEM STATUS MESSAGE TIRE PRESSURE
ON 331 kPa (48 PSI)*
OFF 296 kPa (43 PSI)*
*Tolerance ±6.9 kPa (1 PSI)
ACTIVE FAULT AND SYSTEM ALERTS
An active fault will be triggered when a system failure has been detected. When this occurs, the Instrument Cluster will illuminate the TPMS indicator and the SKREEM will store the fault code. An alert will be triggered when a tire pressure has gone below or above the set threshold pressure. When this occurs, the Instrument Cluster will flash the TPMS indicator. The SKREEM will request a secondary message to be displayed on the EVIC (if equipped). Only when a tire pressure has gone below the set threshold pressure will the SKREEM request the TPMS indicator to flash and display the EVIC message (if equipped). When a high pressure alert occurs, only the EVIC message will be displayed. This action will be displayed as long as the alert condition is active.