Operation CHARM: Car repair manuals for everyone.
Home >> Jeep >> 2004 >> Liberty 2WD L4-2.4L VIN 1 >> Repair and Diagnosis >> Maintenance >> Service Reminder Indicators >> Maintenance Required Lamp/Indicator >> Description and Operation
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Maintenance Required Lamp/Indicator: Description and Operation

OVERHEAD CONSOLE

Electronic Vehicle Information Center (EVIC)
When equipped, the Electronic Vehicle Information Center (EVIC) is located in the overhead console. The EVIC supplements the standard vehicle instrumentation. The EVIC also provides additional driver information, warnings; an interface to enable and disable vehicle programmable features and displays memory system messages. Most of 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.

The EVIC uses a vacuum fluorescent (VF) display to supply the vehicle operator with a compass heading, outdoor temperature, average fuel economy, distance to empty, trip odometer, and elapsed ignition on time.

The EVIC function buttons are labeled C/T, RESET, STEP and MENU. The three UGDO buttons are labeled with dots to indicate the channel number.

The optional Universal Garage Door Opener (UGDO) known as HomeLink(R) is integrated with the EVIC.

Vehicle Information Display
The EVIC provides the following functions:
- Compass direction
- Outside temperature
- Elapsed ignition on time
- Distance to empty
- Average fuel economy
- Trip Odometer
- Service Interval
- Customer Programmable Features
- Vehicle Information Warning Message Displays 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 Compass Mini-Trip Computer section for problems related to the EVIC.

The EVIC receives the following messages from the Instrument Cluster:
- Low Washer Fluid
- Turn Signal On
- Vehicle Odometer

The EVIC receives the following message from the BCM:
- Filtered Outside Temperature
- Door(s) Ajar
- Reargate Ajar
- Liftgate Ajar
- Remote Key Battery Low
- VF display dimming brightness and exterior lamp status
- Elapsed Ignition On Time data
- Distance to Empty
- Average Fuel Economy
- Trip Odometer data
- Verification of US/Metric status

The EVIC receives the following message from the PCM:
- Vehicle Speed
- Engine RPM
- Charging System Voltage


WARNING MESSAGES:
WHEN THE APPROPRIATE CONDITIONS EXIST, THE EVIC DISPLAYS THE FOLLOWING WARNING MESSAGES AND SYMBOLS. EACH MESSAGE IS ACCOMPANIED BY A SERIES OF BEEPS.

* TURN SIGNAL ON (with graphic)
* PERFORM SERVICE
* DRIVER DOOR OPEN (with graphic)
* PASSENGER DOOR OPEN (with graphic)
* REAR DOOR(S) OPEN (One or more, with graphic)
* REAR GATE OPEN
* LIFT GLASS OPEN
* HOOD OPEN (BUX Only)
* WASHER FLUID LOW
* REMOTE KEY BATTERY LOW
* NO J1850 MSGS RECEIVED

Customer Programmable Features:
Press the MENU button to select one of the following displays:

- LANGUAGE (Press STEP button to select one of 5 languages)
- US or METRIC (Press STEP button to toggle between US or Metric units)
- AUTO DOOR LOCKS (Press STEP button to select "Yes" or "No.") (EXCEPT BUX)
- AUTO UNLOCK ON EXIT (Press STEP button to select "Yes" or "No.") (EXCEPT BUX)
- REMOTE UNLOCK DRIVER'S DOOR 1st (Press STEP button to select)
- SOUND HORN ON LOCK (Press STEP button to select)
- FLASH LIGHTS ON LOCK/UNLOCK? (Press STEP button to select "Yes" or "No.")
- HEADLAMP DELAY (Press STEP button to select desired delay)
- SERVICE INTERVAL (Press STEP button to select distance intervals)
- TRAIN REMOTE (Press STEP button to select "Yes" or "No.")
- RESET SERVICE DISTANCE (Press STEP button to select "Yes" or "No.")
- LOW FUEL CHIME (Press STEP button to select "Yes" or "No.")

Menu Button
Pressing the MENU button while displaying Compass/Temp or traveler screens will initiate the personalization menu. Pressing the MENU button while in the personalization menu will step the EVIC through the personalization screens.

Step Button
The EVIC will enter a traveler screen by pressing the STEP button while the Compass/Temp screen is displayed or by stepping through all the personalization screens with the MENU button. The STEP Button can be used in one of the following ways:
1. To sequentially select one of 4 displays or blank display in the following order:
- Average Fuel Economy
- Distance to Empty
- Trip Odometer
- Time Elapsed
- Service Mileage
- Off (Blank)

2. To set the magnetic variance zone when VARIANCE = X (X = 1 - 15) is indicated in the VF display.
3. Pressing the STEP button while displaying a personalization screen will toggle the options for that feature.

Reset Button
The RESET Button has two different functions:
1. To clear the trip functions that may be reset
2. To enter and exit the diagnostic mode

Pressing the RESET button once will clear the trip function that is currently being displayed and the EVIC will 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 and an additional beep request is sent to the BCM. The trip functions that may be reset are:
- Average Fuel Economy
- Trip Odometer
- Elapsed Time
- Service Mileage

A reset will only occur if one of the trip functions that may be reset is currently being displayed. The EVIC module will send a beep request to the BCM.

Simultaneously pressing the RESET button and the C/T button while turning the ignition from Off to On will enter the EVIC into the self-diagnostic mode. The EVIC self-diagnostic mode may also be initiated using the DRB III (R).

Compass/Temperature (CIT) Button
Actuating the Compass/Temperature Button (C/T) will cause the EVIC to display the compass and temperature information. This function will operate from another traveler display. The EVIC simultaneously displays the compass reading and the outside temperature. Outside temperature information is received via the PCI bus from the BCM.

The EVIC module internally senses and calculates the compass direction.




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.



Refer to Body Control System.
Body Control Module

Refer to Electronic Vehicle Information Center (EVIC).
Driver/Vehicle Information Display

Refer to The Programmable Communication Interface Multiplex System (PCI Bus).
Information Bus



pro multis · About Operation CHARM