Condensate Drain Hose, Checking

Condensate Drain Hose, Checking

• Only one condensation water drain hose is installed in this vehicle.

• There is no door at valve for condensation water drain - C -.






For complaints of moisture in passenger compartment, check the following components as well as condensation water drain:

- Water drain for plenum chamber. Refer to=> [ Plenum Chamber Water Drain, Checking and Cleaning ] Testing and Inspection.

- Plenum chamber cover and cover for fresh air intake housing for correct installation and damage. Refer to=> [ Air Intake Cover ] Air Intake Cover.

- Dust and pollen filter for soiling and correct installation. Refer to=> [ Dust and Pollen Filter ] Service and Repair.

- Forced air extraction vents in luggage compartment. Refer to=> [ Vent Frame, Checking ] Vent Frame, Checking.

- Function of back pressure door, refer to=> [ Airflow Door Motor (V71)/Recirculation Door Motor (V113) ] Airflow Door Motor (V71)/Recirculation Door Motor (V113) and recirculating air door => [ Recirculation Door Motor (V113) ] Recirculation Door Motor (V113). Check using Vehicle diagnosis, testing and information system (VAS5051B) in "Guided Fault Finding" function.

- Vehicles with automatically regulated A/C system only: signal for detecting windshield wiper operation at Climatronic Control Module (J255) using Vehicle diagnosis, testing and information system (VAS5051B) in "Guided Fault Finding" function.

Check vent temperature of air from evaporator via measured value of Evaporator Vent Temperature Sensor (G263) under the conditions of use specified by customer (or at the following setting).

- Setting on A/C system controls, A/C Control Module (J301) (vehicles with manually regulated A/C system):

• Temperature setting rotary switch at "cold" stop, fresh air mode and lowest possible fresh air blower speed set (fresh air blower speed rotary switch at speed 1)

- Setting on Climatronic Control Module (J255) (on vehicles with automatically regulated A/C system).

• At the temperature preset "Lo" for the driver and passenger side, fresh air mode and an average fresh air blower speed of approximately 7 volt. Check using Vehicle diagnosis, testing and information system (VAS5051B) in "Guided Fault Finding" function.

- The measured value for the Evaporator vent temperature sensor (G263) is too low (at an ambient temperature of 0 °C, a longer time colder than 0 °C) or too high although the A/C system is working properly, higher than, for example, 10 °C. Refer to the information regarding the cooling output test => [ Cooling Performance - With Automatically Regulated A/C System ] Cooling Performance - With Automatically Regulated A/C System or => [ Cooling Performance - With Manually Regulated A/C System, Checking ] Cooling Performance - With Manually Regulated A/C System, Checking.

Removing and Checking

- Remove the glove compartment and the center console.

- Carefully fold back the carpet near the condensation water drain just enough until the drain is visible.






- Make sure the condensation water drain - B - is routed correctly and is not block with dirt or constricted.

- Cover area beneath opening - D - for condensation water drain - C -) with absorbent paper (so that any water present does not flow under carpet).

- Remove condensation water drain - B -.

- Check condensation water drain of A/C unit - A - for soiling (e.g. using a piece of wire).

- Check gap between insulation mat installed in center tunnel and valve for condensation water drain - C - above opening - D - in floor panel, there must be a sufficient large gap to allow water condensation to flow out of valve for condensation water drain - C -.






Installing

Installation is carried out in the reverse order while observing the following.

- Install the condensation water drain - B - so that it is not twisted or pinched.

- When installing the carpet, take special care that it does not compress the condensation water drain - B -.