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ELECTRONIC VEHICLE INFORMATION CENTER (EVIC) OVERHEAD CONSOLE

The Electronic Vehicle Information Center is a computer controlled warning system which, monitors various sensors used on the vehicle. The system supplements the warning indicators in the instrument cluster. Visual warning messages are displayed by a digital display in the overhead console (Fig. 1).

Fig. 1 EVIC Overhead Console

When a warning message has been activated, a tone will sound to attract the driver's attention. The warning message will then be displayed on the overhead console until the condition is corrected or a new display function is called up. A tone will announce each new warning condition.

For complete diagnostic procedures for the EVIC systems, refer to the Body-Chassis Diagnostic Test Procedures Manual.

The EVIC has a 24 function system that provides the driver with visual messages when a warning condition exists. These messages are displayed on the overhead console.

For complete EVIC overhead console operating instructions, refer to the Owners Manual provided with the vehicle.

EVIC BUTTON FUNCTIONS

TIME button will display:

²Time of day

²Day of week

²Day of month

²Month of year

The body controller is the source of this information. The EVIC function buttons are used to reset and display this data.

²To set HOURS, press TIME button and within four seconds press the SET button. An arrow will appear on the display and point to the hours. Press and hold the SET button to advance the hours or INFO button to set back the hours.

²To set MINUTES, press TIME button. The arrow will point to the minutes. Press and hold the SET button to advance the minutes or INFO button to set back the minutes.

²To set DAY of WEEK, press TIME button. An arrow will appear on the display and point to the Day. Press and hold the SET button to move the day forward or INFO button to move it backward.

²To set DAY of MONTH, press TIME button. The arrow will point to Date. Press and hold the SET button to advance the date or INFO button to move it backwards.

²To set MONTH of YEAR, press TIME button. The arrow will point to the Month. Press and hold the SET button to advance the Month forward or INFO button to move backward.

TEMP button, pressing the Temp button will display:

²The temperature outside the vehicle

²Vehicle direction define by an eight point compass

If Compass has lost calibration or not receiving good information from the engine node, an asterisk

(*) will flash on the display and the word calibrate will appear. Refer to Compass Calibration.

FUEL BUTTON, WILL DISPLAY:

² Pressing FUEL button the first time will show, the estimated number of miles that can be driven with the remaining fuel. The destination to empty indica-

tion will vary every few seconds as the amount of fuel and fuel efficiency is calculated. This function can not be reset.

²Pressing the FUEL button second time; will display the fuel consumed.

²Pressing the FUEL button third time; will display the average fuel economy in miles per gallon since last reset. The display will be updated every 16 seconds.

²Pressing the FUEL button forth time, the current fuel economy will be displayed. The current fuel economy will be up updated every two seconds.

²To reset Fuel consumed, press SET button until the fuel consumed massage is displayed and then within five seconds press SET button.

²To reset AVERAGE FUEL ECONOMY, press the FUEL button until average fuel economy is displayed and within five seconds press SET button.

TRIP RESET, press FUEL button and wait four seconds press the SET button twice. This clears all trip information and the massage Trip Reset will be displayed. This will occur only if a reset function is currently being displayed. The reset functions:

²Fuel consumed

²Average fuel economy message

INFO button, will active a MONITORED SYSTEMS OK message on display if all monitored systems are operating properly. If a problem is detected, the appropriate message will be displayed.

SET button, will clear the various functions after they have been displayed. It is used to enter the clock set or compass variance modes. This button is also used to reset certain trip computer functions and the maintenance reminder message.

The EVIC display may be turned off by pressing the TIME and SET buttons at the same time. Pressing the buttons a second time will restore the display.

EVIC INFORMATION SOURCES

The EVIC monitors information provided by the body controller, engine compartment node and engine controller. Refer to Body Diagnostic Test Procedure Manual for test procedures.

The Body Controller is a micro-controller unit which, informs the EVIC overhead console via the CCD bus of:

²Time of day

²Day of week

²Day of month

²Month of year

²Fuel range

²Fuel consumed

²Fuel efficiency

²Warning messages as noted in Fig. 2

The Engine Compartment Node is a microcomputer controlled unit which, informs the EVIC overhead console via the CCD bus of:

Fig. 2 EVIC Messages and Sensors

²Outside temperature

²Compass direction

THE FOLLOWING ARE WARNING MESSAGES:

²Low brake fluid

²Low coolant level

²Low engine oil level

The Engine Controller is a microcomputer controlled unit which, informs the EVIC overhead console via the CCD bus of the following warning messages:

²Engine temperature high

²Voltage improper

VISUAL MESSAGES

Following are the visual messages and the conditions under which, the messages will be given:

²Keys in ignition

²Exterior lamps on

These messages will appear if the conditions are present and the driver's door is open while the ignition switch is in the OFF, LOCK, or ACC positions. A tone will sound until the condition is corrected or the door is closed.

²Passenger door ajar

²Driver door ajar

²Trunk ajar

²Park brake engaged

²Right rear door ajar

²Left rear door ajar

These messages will appear if a condition is detected after the vehicle is in motion. When the condition is corrected, a short tone will sound to acknowledge the action.

LOW OIL PRESSURE

8C - 8 OVERHEAD CONSOLE

If this message is displayed while the vehicle is at cruising speeds, immediate attention is required. If this message appears at idle speed, increase the idle speed and the message should go off. If the message remains on, immediate attention is required.

ENGINE TEMP CRITICAL

This message appears when a sensor has determined that the engine coolant is overheating. If this message comes on and stays on, immediate action is required.

COOLANT LEVEL LOW LOW FUEL LEVEL LOW BRAKE FLUID WASHER FLUID LOW

These messages will appear if a continuous warning condition is detected while the engine is running. Inspection is required. To clear this message from the display, after the condition is corrected, the ignition switch must be turned OFF.

CHECK TRANS

This message will appear if a continuous warning condition is detected while the engine is running. Immediate attention is recommended. To clear this message from the display, after the condition has been corrected, the ignition switch must be turned OFF.

VOLTAGE IMPROPER

This message will appear if a continuous warning condition is detected. Immediate attention is required. To clear this message from the display, after the condition has been corrected, the ignition switch must be turned OFF.

TURN SIGNAL ON

This message will appear if the turn signal is left on while vehicle speed is over 15 mph and the vehicle has traveled over one-half mile.

FASTEN SEAT BELTS

An intermittent chime tone will sound for several seconds if the seat belt is not fastened.

CHK ENGINE OIL LEVEL

If this message is delivered, a check of the engine oil dipstick is suggested. To clear this message, after the condition is corrected, the ignition switch must be turned OFF.

HEADLAMP OUT

BRAKE LAMP OUT TAIL LAMP OUT

These conditions are monitored only when the lamps are on. The message will remain, even after the lamp is replaced, until the lamp is turned on and operates.

SERVICE REMINDER

The maintenance reminder statement is programmed to provide general information only. Refer to Group 0, Lubrication & Maintenance for specific vehicle requirements.

The service reminder message is displayed at 7,500 miles or 12 months intervals, which ever comes first.

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MONITORED SYSTEMS OK

If there is no warning condition to report, the message Monitored Systems OK is displayed (Fig. 2).

AUTOMATIC CALIBRATION SET PROCEDURE

The engine node will continuously and automatically recalibrate the compass under normal driving conditions. As long as the vehicle is turning, the engine node will record new compass data. This new data will be used to recalibrate the compass at a rate of at least once per full (360 degree) turn of the vehicle. Automatic calibration does not require operator interface.

MANUAL CALIBRATION SET PROCEDURE

Manual compass calibration has been replaced by automatic calibration set procedure. The manual calibration set procedure is available, but no longer serves any useful purpose.

EVIC SELF CHECK DIAGNOSTICS

Ignition switch ON, the EVIC not displaying any massage, may imply a system failure and not an EVIC failure. Pressing the TEMP, FUEL and INFO buttons at the same time shall provide the visual message MODULE SELF CHECK for two seconds. Following at two second interval there will be massages:

²E2-0 SELF CHECK

²E3-0 SELF CHECK

²END OF SELF CHECK

Showing the microcomputer is working properly. When the self check mode and message shows:

²E2-1

²E3-2

This would show a fault exists in the EVIC's microcomputer and the EVIC should be replaced (Fig. 3).

BUS ACCESSED DIAGNOSTICS

The following diagnostic test may be used to check the integrity of the EVIC's internal connections and operations. Refer to the Body Chassis Diagnostic Test Procedure Manual for test procedures.

MODULE RESET TEST, when the EVIC receives this request from the DRB II, the EVIC will immediately enter into reset.

DISPLAY TEST: The EVIC receives a request from the DBR II, the EVIC will enter into a visual display mode. Also checks the integrity of the display driver to anode connections. The test shall consist of walking through the vertical and horizontal rows of anodes in the dot matrix display.

SWITCH STATUS TEST, when the EVIC receives this request from the DRB II, the EVIC will report the open/closed status of each individual switch.

FAULT BYTE TEST, when the EVIC receives this request from the DRB II, the EVIC will report fault status. Messages reported are:

²NO FAULT

²DISPLAY DRIVER FAULT

²EVIC MISSING MESSAGES

²POWER SUPPLY FAILURE

²FAULT IN RAM

²FAULT IN ROM

EVIC missing message implies that there may be a system failure and/or the body controller is not providing EVIC with sufficient information.

DISPLAY DRIVER FAULT, power supply failure and fault in RAM/ROM implies that the EVIC is defective.

CONSOLE REMOVAL

(1) Remove lenses (Fig. 4).

Fig. 5 EVIC Overhead Console

(3)Remove switch assembly by pulling down mounting tabs and swing assembly out of position.

(4)Disconnect switch wiring connector and remove electronic board and switch assembly. Replace function button switch assembly. The buttons are not serviceable.

(5)For installation reverse above procedures.

WIRING HARNESS REMOVAL

(1) Remove console, refer to Console Replacement (Fig. 6).

Fig. 4 EVIC Overhead Console Lens Removal

(2)Remove screws from visor tip-pin retainers.

(3)Remove screws in lens openings, after removing lamps.

(4)Remove console and disconnect wires.

(5)For installation reverse above procedures.

ELECTRONIC BOARD ASSEMBLY REPLACEMENT

(1)Remove console, refer to Console Replacement (Fig. 5).

(2)Remove six mounting screws holding bezel to housing.

(3)Remove switch assembly by pulling down mounting tabs and swing assembly out of position.

(4)Disconnect switch wiring connector and replace electronic board assembly.

(5)For installation reverse above procedures.

BEZEL/BUTTON SWITCH REMOVAL

(1)Remove console, refer to Console Replacement.

(2)Remove six mounting screws holding bezel to housing.

Fig. 6 EVIC Overhead Console Connector

(2)Disconnect wiring connector from retaining bracket.

(3)Remove screws, securing wiring to console housing.

(4)Remove push/slide switches. The reading lamp switch buttons are not serviceable.

(5)Remove lamp sockets from reflector bracket.

(6)Remove wiring.

(7)For installation reverse above procedures.