Behavior 3: Faulty circulating pump
Auxiliary heater temperature increases. Heat exchanger temperature does not increase. Engine coolant temperature remains constant.
| No | Designation |
|---|---|
| 1 | Coolant flow rate |
| 2 | Heat exchanger sensor |
| 3 | Heat exchanger for heating system |
| 4 | Water valve |
| 5 | Auxiliary heater temperature |
| 6 | Auxiliary heating |
| 7 | Recirculation pump |
| 8 | Changeover valve |
| 9 | Engine coolant temperature |