FUEL GAUGE
id092200032700
Purpose
• The fuel gauge notifies the user of the amount of remaining fuel.
Function
• The instrument cluster calculates the amount of fuel in the fuel tank based on the following CAN signals and displays the amount of fuel using the digital needle indicator. (Instrument cluster type A)
• The instrument cluster calculates the amount of fuel in the fuel tank based on the following CAN signals and displays the fuel gauge segments. (Instrument cluster type B)
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― Fuel gauge sender unit voltage signal sent from rear body control module (RBCM)
― Fuel injection amount signal, vehicle speed signal sent from PCM
Fuel gauge flicker prevention function
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• When the instrument cluster determines that the vehicle is being driven, it retards the response with which the calculated amount of fuel is reflected to the fuel gauge. As a result, fuel gauge flicker caused by the variation of fuel surface during driving is prevented.
Refuel determination function
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• If the amount of fuel is changed by 5 L {1 US gal, 1 Imp gal}/2 L {0.5 US gal, 0.4 Imp gal}*1 or more while the vehicle is stopped, the instrument cluster determines that the vehicle is refueled and displays the amount of fuel using the digital indicator based on the fuel gauge sender unit voltage signal from the rear body control module (RBCM). (Instrument cluster type A)
• If the amount of fuel is changed by 5 L {1 US gal, 1 Imp gal}/2 L {0.5 US gal, 0.4 Imp gal}*2 or more while the vehicle is stopped, the instrument cluster determines that the vehicle is refueled and displays the fuel gauge segments based on the fuel gauge sender unit voltage signal from the rear body control module (RBCM). (Instrument cluster type B)
*1 :5 L {1 US gal, 1 Imp gal} when the fuel tank level is approx. 47 L {12 US gal, 10 Imp gal} or less, 2 L {0.5 US gal, 0.4 Imp gal} when the fuel tank level is approx. 51 L {13 US gal, 11 Imp gal} or more
*2 :5 L {1 US gal, 1 Imp gal} when the number of fuel gauge segments is 14 or less/2 L {0.5 US gal, 0.4 Imp gal} when the number of fuel gauge segments is 15 or more
Construction
• The fuel gauge is displayed in the multi-information display (Instrument cluster type A)/LCD (Instrument cluster type B) of the instrument cluster.
Operation
1. When the ignition is switched ON (engine off or on), the rear body control module (RBCM) converts the resistance from the fuel gauge sender unit to voltage and sends it to the instrument cluster as a fuel gauge sender unit voltage signal (1).
2. The instrument cluster receives the fuel gauge sender unit voltage signal from the rear body control module (RBCM), and it also receives the fuel injection amount control signal and vehicle speed signal from the PCM (2).
3. The instrument cluster calculates the amount of fuel in the fuel tank based on the signals (3).
4. The instrument cluster displays the fuel tank level based on the calculation result (4).
Fail-safe
• Function not equipped.
