AD83.40-P-3000D | Automatic air conditioning (Auto A/C) diagnosis operational check | 25.2.98 |
MODEL 129 as of 1.6.96 with CODE (581a) Automatic air conditioning
Automatic air conditioning (AAC) diagnosis, function check | |||
Prerequisites for function check, automatic air conditioning (AAC) | |||
Function check | |||
Test step | Operation/requirement | Specified value | Remedy |
1 Defrosting | Function button Any preselected temperature | Blower runs at higher speed. Air flow from defroster air outlets. AC compressor on, maximum heat output, 100% fresh air. | Testing electrical system: |
2 Complete ventilation in cooling mode | Function button Preselected temperature "" | Blower runs at higher speed. Air flow at center and side air outlets. AC compressor on, no heat output. | Testing electrical system: Testing pneumatics: |
3 Normal setting in control mode | Function button Adjust preselected temperature corresponding to the interior temperature | Blower speed reduces. Air flow at defroster air outlets, leak air from footwell outlets. AC compressor on. Temperature-controlled air flow. Mono valve cycles and the coolant circulation pump runs. | Testing electrical system: Testing pneumatics: |
4 Economy without heating mode | Preselected temperature "" Function button Function button | Air from center level (ambient air). AC compressor off. | Testing electrical system: Testing pneumatics: |
5 Economy in heating mode | Preselected temperature "" Function button | Air flow from footwell air outlets, left/right side air outlets. Leak air from defroster air outlets. Maximum heat output. | Testing electrical system: Testing pneumatics: |
6 Residual heat storage system | Ignition: OFF Function button Preselected temperature > 26 °C | Heated air from footwell air outlets, side air outlets, leak air from defroster air outlets. Blower runs at lower speed. | Testing electrical system: Testing pneumatics: |
Referenced documents
- ad8340p200001b Preconditions for operational check of automatic air conditioning (Auto A/C)
- ad8340p2000d Automatic air conditioning (Auto A/C) diagnosis previous knowledge
- ad8340p600009d Refrigerant pressure sensor test electrics automatic air conditioning (Auto A/C)
- ad8340p600011d Serial interface K1 test electrics automatic air conditioning (Auto A/C)
- ad8340p600014d Pushbutton control module test electrics automatic air conditioning (Auto A/C)
- ad8340p600015d Heating water circulation pump test electrics automatic air conditioning (Auto A/C)
- ad8340p600017d Blower control actuation test electrics automatic air conditioning (Auto A/C)
- ad8340p600018d A/C compressor actuation test electrics automatic air conditioning (Auto A/C)
- ad8340p600019k Valve block test electrics automatic air conditioning (Auto A/C)
- ad8340p600028a AAC test of electrical system center vent switch
- ad8340p600029a AAC test of electrical system monovalve
- ad8340p800101b Defroster outlet, testing pneumatics of (Automatic) A/C
- ad8340p800103b Blend flap, testing pneumatics of Automatic A/C
- ad8340p800104b Footwell flap, testing pneumatics of Automatic A/C
- ad8340p800105b Recirculated air, testing pneumatics of Automatic A/C