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Ethanol sensor

Ethanol sensor

Location

See Sensor, ethanol content (780).


Main purpose

To provide control module E39 with information about the current ethanol content in the fuel.

Type

Flow sensor, measures the properties of the fuel that the sensor's microprocessor uses to calculate the fuel's ethanol content.

Connection


Pin no. Signal type Description
1 Ground Sensor ground to grounding point G7 via J40
2 Square wave with varying frequency The sensor's signal to the ECM, the square wave's frequency varies with the current ethanol content in the fuel.
3 Power supply +15 Sensor voltage supply +15 from fuse 8 in 342.