Grand Cherokee 2WD Limited V8-4.7L (2002)
Driver/Vehicle Information Display: Description and Operation
ELECTRONIC VEHICLE INFORMATION CENTER
The Electronic Vehicle Information Center (EVIC) is located in the overhead console. The EVIC supplements the standard vehicle
instrumentation.
Three versions of the EVIC module are available on the Grand Cherokee. These three versions are identical except that some models include an
integral three-push button Universal Garage Door Opener (UGDO) transmitter transceiver and/or Tire Pressure Monitoring System (TPM). The
three UGDO buttons are labeled with dots to indicate the channel number. All three EVIC modules feature a large Vacuum Fluorescent Display
(VFD) screen for displaying information, and back-lit push buttons function switches labeled C/T (compass/temperature), RESET, STEP and
MENU. The VFD screen can also display a vehicle graphic that is used for door and liftgate open indications and to show if a turn signal has been
left on. The EVIC messages and displays are coordinated with warning indicators in the instrument cluster to avoid duplication.
The BCM supplies most of the information displayed by the EVIC. Display information is received over the PCI bus. The EVIC sends and
receives data over the PCI bus, communicating with the BCM, PCM, and the Instrument Cluster. Tire Pressure Monitoring System information is
received by the EVIC in the form of radio transmissions. The tire pressure sensors are mounted to the vehicle wheels.
The EVIC module contains a central processing unit and interfaces with other electronic modules in the vehicle over the Programmable
Communications Interface (PCI) data bus network. The PCI data bus network allows the sharing of sensor information. This helps to reduce wire
harness complexity reduce internal controller hardware, and reduce component sensor current loads. At the same time, this system provides
increased reliability, enhanced diagnostics, and allows the addition of many new feature capabilities.
VEHICLE INFORMATION DISPLAY
The EVIC module includes the following display options:
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Compass and Temperature - provides the outside temperature and one of eight compass readings to indicate the direction the vehicle is facing.
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Average fuel economy - shows the average fuel economy since the last trip computer reset.
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Distance to empty - shows the estimated distance that can be travelled with the fuel remaining in the fuel tank. This estimated distance is
computed using the average miles-per-gallon from the last 30 gallons of fuel used.
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Instant fuel economy - shows the present fuel economy based upon the current vehicle distance and fuel used information.
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Trip distance - shows the distance travelled since the last trip computer reset.
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Elapsed time - shows the accumulated ignition-on time since the last trip computer reset.
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Distance to service - shows the distance remaining until the next scheduled service interval.
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Tire Pressure - shows the tire pressure in each tire.
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Blank screen - the EVIC compass/temperature/ trip computer VFD is turned OFF.
The EVIC is capable of displaying the following driver alert messages, which are accompanied by an audible announcement consisting of a series
of beeps:
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TURN SIGNALS ON (with vehicle graphic) - Indicates that a turn signal has remained on for about 1.6 kilometers (one mile).
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PERFORM SERVICE - Indicates that a customer programmable service interval distance has been reached.
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DOOR OPEN (one or more, with vehicle graphic) - Indicates that a door is open or not fully closed.
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LIFTGATE OPEN (with vehicle graphic) - Indicates that the liftgate is open or not fully closed.
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LIFTGLASS OPEN (with vehicle graphic) - Indicates that the liftglass is open or not fully closed.
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COOLANT LEVEL LOW (with vehicle graphic) - Indicates that the coolant level in the engine coolant reservoir is low.
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XX LOW PRESSURE (with vehicle graphic) - Indicates that the air pressure in the selected tire is low.
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WASHER FLUID LOW (with vehicle graphic) - Indicates that the fluid level in the washer fluid reservoir is low.
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 the EVIC.
The EVIC "Menu" push button provides the vehicle operator with a user interface, which allows the selection of several optional customer
programmable electronic features to suit individual preferences. Refer to ELECTRONIC VEHICLE INFORMATION CENTER
PROGRAMMING in the Service Procedures section of this group for more information on the customer programmable feature options.
If the vehicle is equipped with the optional memory system, the EVIC will display the following memory system messages:
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MEMORY # X POSITION SET (X = Driver 1 or Driver 2) - This message appears in the EVIC display each time the memory system is
successfully programmed. It is accompanied by an audible announcement chime tone.
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MEMORY SYSTEM DISABLED - The memory system is automatically disabled while the driver side seat belt is fastened and/or while the
automatic transmission gear selector is in any position except Park or Neutral. This message appears in the EVIC display as a reminder when a
memory switch push button is depressed while the memory system is disabled. If the REMOTE LINKED TO MEMORY customer
programmable feature has been selected, this message will also appear when the Unlock button of the Remote Keyless Entry (RKE)
transmitter is depressed while the memory system is disabled.
If the vehicle is equipped with the optional Universal Transmitter transceiver, the EVIC will also display messages and an icon indicating when the
Universal Transmitter is being trained, which of the three transmitter buttons is transmitting, and when the transceiver is cleared.
If the vehicle is equipped with the optional Tire Pressure Monitoring System, the EVIC will also display messages and an icon indicating when the
