Coolant System Schematic
| 1. | Coolant pump |
|---|
| 2. | Cylinder block |
| 3. | Thermostat housing (see detail below) |
| 4. | Coolant to heater matrix (on vehicles without rear heating), or to rear heating (if installed) |
| 5. | Coolant from heater matrix |
| 6. | Bleed screw |
| 7. | Coolant pre-heater (on vehicles without additional rear heater) |
| 8. | Coolant expansion tank |
| 9. | Radiator |
| 10. | Oil cooler |
| 11. | EGR cooler |
Thermostat Housing Connections
| 1. | Coolant discharge to radiator |
|---|
| 2. | Bleed screw |
| 3. | Coolant discharge to heater matrix (on vehicles without rear heating), or to rear heating (if installed) |
| 4. | Coolant temperature sensor |
| 5. | Coolant return from heater matrix |
| 6. | Coolant from radiator outlet |
