Ethanol sensor
| Ethanol sensor |
| 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. |
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