Focus L4-2.0L SOHC VIN P (2000)
Ice warning
The ambient temperature gauge supplies the trip computer module with the current ambient temperature. At certain temperature changes, the trip
computer module outputs an ice warning to warn the driver of black ice on the road:
Ambient temperature display
The trip computer module converts the resistance values supplied by the ambient temperature sensor. Temperatures between -40 °C and + 65 °C / -40
°F and +149 °F can be displayed. If the readings are outside this range or the circuit is broken or shorted, then this is displayed as "--°C" or "-- °F".
The module corrects temperature readings that are affected by the heat of the engine. When the ignition is turned off, the last value displayed is stored
for one hour.
Average fuel consumption display in liters per 100 km or mpg
The average fuel consumption is calculated for the last 1000 km traveled, or for the time since the last reset. The display is not updated until the
change amounts to more than 1 litre per 100 km/min or 2 mpg/mm.
Current fuel consumption display in liters per 100 kms or mpg
The instantaneous fuel consumption in litre/100 km is calculated according to the following formula:
100 x fuel consumption in the last second / distance covered in the last second
The instantaneous fuel consumption in miles per gallon is calculated according to the following formula:
distance covered in the last second / fuel consumption in the last second
A maximum value of 55 litres/100 km or 99 mpg can be displayed. If the signal from the vehicle speed sensor (VSS) falls below 7 Hz, i.e. 5 km/h,
then the display changes to liters per hour. If the signal increases to 9 Hz, then the display reverts to liters per 100 km.
Display of distance remaining
The distance remaining is calculated according to the following formula:
100 x current fuel level / average consumption The trip computer module calculates the current fuel level from the resistance values that the fuel gauge
sender unit outputs:
Since the input value fluctuates constantly because of the movement of the fuel in the tank, the trip computer module processes the value after a time
delay using an algorithm. If the circuit to the fuel gauge sender unit is broken or shorted, the following display is output: (---)
An acoustic warning signal is transmitted by the CTM when the following remaining distances are calculated:
80 km (50 miles), 40 km (25 miles), 20 km (10 miles) and 0 km (0 miles). In this case the display automatically switches over to remaining distance,
regardless of which mode it is in.
The remaining distance displayed is not updated if the distance traveled is less than 5 km (3 miles) or if the ignition has been switched on for less than
five minutes. If the tank is filled with more than 9 liters (2 gallons), the value is immediately re-calculated and displayed.
Display of average speed
The average fuel speed is calculated for the last 1000 km traveled, or for the time since the last reset. If the current speed increases at a rate faster than
