D T C P0178 Fuel Composition Sensor Circuit Low Frequency Alcohol
content information is supplied to the P C M from the fuel composition
sensor. The fuel composition sensor measures fuel temperature through
an internal thermistor. The fuel conductivity and capacitance are
electronically measured inside a small fuel cell. The internal
circuitry combines the electrical measurement and fuel temperature
information using a microprocessor to produce a Hertz frequency output.The code set because the fuel composition sensor frequency is below 45 Hz for 12.5 seconds.
content information is supplied to the P C M from the fuel composition
sensor. The fuel composition sensor measures fuel temperature through
an internal thermistor. The fuel conductivity and capacitance are
electronically measured inside a small fuel cell. The internal
circuitry combines the electrical measurement and fuel temperature
information using a microprocessor to produce a Hertz frequency output.The code set because the fuel composition sensor frequency is below 45 Hz for 12.5 seconds.
