| –
| Use hose clamps up to 40 mm -3093- for example to pinch off the two coolant hoses between the engine and the heat exchanger of the air conditioning unit. |
| –
| Use a thermometer to measure the temperature of the air emerging from the left and right dash panel vents. |
| –
| Compare your measured values to the measured values displayed (for the evaporator output temperature sender -G263-). |
|
↓
yes
↓
| ↓
no
↓
|
| –
| Detach the hose clamps up to 40 mm -3093- from the two coolant hoses. |
↓ | | –
| Check the evaporator output temperature sender -G263- for correct installation, as well as the electrical connections for contact resistance. |
|
| –
| Check actuation and operation of the temperature flap control motor -V68- → Chapter. |
↓
| | –
| Eliminate the cause of the incorrect measured value of the evaporator output temperature sender -G263-. Replace the sender if defective. |
|
| l
| Actuation and operation of temperature flap control motor -V68- OK? |
|
↓
yes
↓| –
| Check operation of the temperature flaps in the air distribution housing responsible for the temperature increase → Chapter. |
| –
| Replace the air distribution housing if necessary → Chapter. |
| ↓
no
↓ |
Note