Circuit/System Description
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The reductant quality sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. The reductant quality sensor includes an integrated temperature sensor to measure reductant fluid temperature. The reductant quality sensor communicates with the reductant control module using serial data.
| Circuit | Description |
|---|---|
| 5 V Reference | Regulated voltage supplied by the control module. |
| Serial Data | The serial data circuits are used to exchange information between the control modules. |
| Low Reference | Grounded through the control module. |
| Component | Description |
|---|---|
| B295 Reductant Quality Sensor | The resistance of the sensor changes with fluid level. |
| K115 Reductant Control Module | The control module controls the heating and dosing of the reductant. |