AD83.40-P-3000C | Air conditioning (Automatic) (Automatic) A/C diagnosis, function check | 24.2.97 |
MODEL 202 as of 1.9.95 with CODE (581a) Air conditioning (Automatic)
| Air conditioning (Automatic) (Automatic) A/C diagnosis, advanced information | ||
a | Fuses F1/4, F1/7, F1/8 | ||
b | Aspirator blower for temperature sensor diagnosis, advanced information (Automatic) A/C | ||
c | Allow engine to idle at operating temperature (approx. 80°C engine coolant temperature) during the complete duration of the test. | ||
d | Open center and side outlets manually. | ||
e | Recirculated air button not pressed. | ||
Function check | |||
Scope of test | Operation/Requirement | Specified value | Possible cause/Remedy |
Defrosting | Function button Any preselected temperature | Blower runs at increased speed. Air flow at defroster outlets. A/C compressor on, maximum heat output, 100% fresh air. | |
Complete ventilation in cooling mode | Function button Preselected temperature "LO" | Blower runs at increased speed. Air flow at center and side outlets. A/C compressor on, no heat output. | |
Normal setting in control mode | Function button Set preselected temperature corresponding to interior temperature | Blower speed reduces. Airflow at defroster outlets and leak air from footwell outlets. A/C compressor on. Temperature-controlled air flow. Duovalve cycles and coolant circulation pump runs. | |
Economy without heating mode | Preselected temperature "LO" Function button Function button | Air from center level (ambient air). A/C compressor off. | |
Economy in heating mode | Preselected temperature "HI" Function button | Air flow from footwell outlets, left/right side outlets. Leak air from defroster outlets. Maximum heat output. | |
Residual heat storage system | Ignition: OFF Function button Preselected temperature > 26°C | Heated air from footwell outlets, side outlets, leak air from defroster outlets. Blower runs at lower speed. |
Referenced documents
- ad8340p200017a Aspirator blower for temperature sensor diagnosis, advanced information (Automatic) A/C
- ad8340p2000c Air conditioning (automatic) diagnosis, basic knowledge
- ad8340p600009c Refrigerant pressure sensor, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600010c Diagnostic output, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600011c Serial interface K1, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600015c Coolant circulation pump, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600016c Duovalve, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600017c Blower regulator actuation, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600018c A/C compressor actuation, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019b Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019c Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019d Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019e Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019f Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019g Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p600019i Switchover valve block, testing electrical system of air conditioning (Automatic) (Automatic) A/C
- ad8340p800101a Defroster outlet, testing pneumatics of (Automatic) A/C
- ad8340p800103a Blend flap, testing pneumatics of Automatic A/C
- ad8340p800104a Footwell flap, testing pneumatics of Automatic A/C
- ad8340p800105a Recirculated air, testing pneumatics of Automatic A/C