Temperature Increase Downstream From Evaporator, Determining Malfunction

-- Clamp off both coolant hoses from engine to heater core of A/C unit e.g. using Hose Clamps, Up to 40 mm.3093.-- Repeat cooling performance test COOLING OUTPUT, CHECKING .-- Measure temperature of the air flowing out of left and right instrument panel vents using a thermometer.-- Compare this value with the displayed measured value of evaporator vent temperature sensor. Does the measured temperature differ less than 3 °C from the evaporator vent temperature sensor measured value. Refer to Vehicle Diagnosis, Testing and Information System VAS 5051 under "Guided Fault Finding"?
↓ Yes ↓		↓ No ↓
-- Remove 3093 from both coolant hoses.↓		-- Check evaporator vent temperature sensor for correct installation and its electrical connection for contact resistance.
-- Check the Temperature Regulator Door Motor -V68- activation and function. Refer to HEATING PERFORMANCE OF A/C SYSTEM, CHECKING .↓		-- Repair the cause for the faulty measured value of evaporator vent temperature sensor, if necessary replace the faulty sensor.
Is activation and function of temperature regulator door motor OK?
↓ Yes ↓-- Check operation of temperature doors in air distributor housing responsible for temperature increase AIR ROUTING AND DISTRIBUTION IN PASSENGER COMPARTMENT .-- Replace air distribution housing if necessary, refer to HEATING AND A/C UNIT .-- Repeat cooling performance test COOLING OUTPUT, CHECKING .		↓ No ↓-- Repair cause of malfunction. Refer to Vehicle Diagnosis, Testing and Information System VAS 5051 under "Guided Fault Finding" and refer to the appropriate SYSTEM WIRING DIAGRAMS information.-- Repeat cooling performance test COOLING OUTPUT, CHECKING .

NOTE:

Vehicles with manually regulated A/C system: temperature doors for left and right side are connected to each other via the shaft.