Passive tank with recirculating pump unit
The passive tank is connected to the active tank by a line. The recirculating pump unit is located in this line.
The recirculating pump unit pumps AdBlue from the passive tank to the active tank. The recirculating pump unit is activated by the SCR control unit. Fluid levels are determined by fill level sensors in the active tank and passive tank.
| Item | Explanation |
|---|---|
| 1 | Passive tank |
| 2 | Transfer pump |
| 3 | two-pin plug connection |
| 4 | Recirculating pump unit line |
| 5 | three-pin plug connection |
| 6 | Fill level sensor |