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| Pinch off both coolant tubes to heating system heat exchanger e.g. using the clamp -U-30042-. |
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| Do the measurement values in the two display fields for the Servomotor for the left-hand side temperature flap (01809) -V158-, Servomotor for the right-hand side temperature flap (01810) -V159- (Climatic: Servomotor for the temperature flap (01271-4122) -V68-) only differ by less than 3°C from the measurement value of the Air temperature sender, evaporator output (00818) -G263-? → Vehicle diagnosis, testing and information system VAS 5051 |
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↓ yes ↓
| ↓ no ↓
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| Remove the pressure clip -U-30042-. | ↓ | –
| Check correct installation of sender with measured value deviation, as well as checking electrical connections for contact resistance. |
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| Check the activation and operation of the Servomotor for the left-hand side temperature flap (01809) -V158-, Servomotor for the right-hand side temperature flap (01810) -V159- (Climatic: Servomotor for the temperature flap (01271-4122) -V68- → Chapter and → Chapter. | ↓ Continued on the following page | –
| Eliminate the cause of the faulty measurement, replace the faulty sender. |
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