Condensation Water Drain, Checking
This vehicle is equipped with two condensation water drains -B- (left and right on the heater and A/C unit or center tunnel).
The opening -C- of the condensation water drain hose -B- does not have a valve or a door. The condensation water flows out over the rubber seals.
There are different versions of the condensation water drain hoses -B-. On this version the condensation water drain -B- is inserted directly in the opening -D-.
For complaints of moisture in passenger compartment, check the following as well as condensation water drain:
-- Plenum chamber water drains. Refer to PLENUM CHAMBER WATER DRAIN, CHECKING .
-- Check the plenum chamber cover and the fresh air intake housing for proper installation and damage. Refer to FRESH AIR INTAKE, REMOVING AND INSTALLING .
-- The dust and pollen filter for soiling and correct installation. Refer to DUST AND POLLEN FILTER, REMOVING AND INSTALLING .
-- The forced air extraction via the luggage compartment. Refer to VEHICLE INTERIOR FORCED AIR EXTRACTION, REMOVING AND INSTALLING .
-- The back pressure door/fresh air door activation and function (refer to FRESH AIR DOOR MOTOR -V438- FUNCTION, REMOVING AND INSTALLING ) and air recirculation door (refer to RECIRCULATION DOOR MOTOR -V113-, REMOVING AND INSTALLING ) for example, via the "output diagnostic test mode" function of the Guided Fault Finding. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding" function.
- If there are complaints regarding humidity in the passenger compartment which only appears when the A/C compressor is switched on and under certain climatic conditions, check the temperature of the air coming out of the vents from the front heater and A/C unit evaporator as follows. Refer to LOCALIZING MALFUNCTION FOR ICE BUILD-UP ON EVAPORATOR .
-- In the Guided Fault Finding, select the measured value of the Evaporator Vent Temperature Sensor -G263-. Use the Vehicle Diagnostic Tester in the"Guided Fault Finding" function.
-- Check the output temperature of air at evaporator under conditions reported by the customer or at the following setting on the Front A/C Display Control Head -E87-, "Auto" operating mode, A/C compressor switched on (indicator lamp in the A/C or A/C MAX button lights up), temperature setting "Cold", middle fresh air blower speed at a voltage of approximately 7V on the Fresh Air Blower -V2-, fresh air mode (indicator lamp "Recirculation" button does not light up) and open instrument panel vents.
-- The sensor measured value is too low (at an ambient temperature above 0 °C (32 °F), colder than 0 °C (32 °F) for an extended period) or too high (although the A/C system is working properly, greater than 10 °C (50 °F), for example). Correct the reason for the deviation while observing the information regarding the cooling output test. Refer to COOLING OUTPUT, CHECKING .