Message Center/Fuel Computer Displays

The message center displays contain the following:
- Average speed (AVG SPEED).
- Instantaneous fuel economy (INST ECON).
- Average fuel economy (AVG ECON).
- Distance to empty (DIST TO EMPTY).
- Trip distance (TRIP A, TRIP B).

The message center takes in signals from the following electronic engine controls:
- Vehicle Speed Sensor (VSS) (speed/distance).
- fuel pump module.
- Powertrain Control Module (PCM) (fuel flow).

The message center performs continuous calculations of a signal or signals to supply the information for each message center function.

Fuel Remaining
The fuel remaining display:
- Indicates how many liters (gallons) of fuel remain in the fuel tank.
- Will display the letter "F" (full) in the display if the fuel level is above 76 liters (20 gallons).
- Will display the letter "E"(empty) in the display if the fuel level is below 4 liters (1 gallon).

Instantaneous Fuel Economy
The instantaneous fuel economy (INST ECON) display:
- computes its reading based on distance traveled (vehicle speed sensor signal) and fuel used (fuel flow signal from powertrain control module) information.
- Has an operating range of 0 to 99 MILES/GAL or 1 to 99 LTR/100 km.
- Displays 0 MILES/GAL or 99 LTR/100 km.
- Cannot be reset.

Average Fuel Economy
The average fuel economy (AVG ECON) display:
- Computes its reading from distance traveled (vehicle speed sensor signal) and fuel used (fuel flow signal from powertrain control module) information.
- Indicates the value calculated since the last reset.
- May be reset by pressing the RESET button while the average fuel economy feature is displayed.

Distance to Empty
The distance to empty (DIST TO EMPTY) display:
- is based on a calculation using an average of the fuel economy over the last 850 km (500 miles) and the current fuel remaining to estimate the distance that can be driven with remaining fuel. This distance can increase or decrease depending on the most recent driving conditions.
- cannot be reset.

For proper distance to empty operation, the ignition switch must be turned to OFF when fuel tank is being refueled.

When distance to empty drops to 80 km (50 miles), the fuel computer overrides the current displayed function, and flashes the DIST TO EMPTY value for five seconds. The display repeats this function at 40 and 16 km (25 and 10 miles).

Trip Distance
The trip distance feature:
- Displays the elapsed distance since the last reset and can be used as a trip odometer.
- Can be reset to zero by pressing the RESET button while the trip distance feature is displayed.
- Registers up to 999.9 and changes to 0.0 when 999.9 is exceeded.

TRIP A and TRIP B operate independently.