A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
and Inspection/Initial Inspection and Diagnostic Overview/Scan Tool Connecting and Initial Checks/Diagnostic Operation System VAS 5051A,
Connecting and Selecting Functions
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Start engine.
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Check DTC memory See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Automatic Climate Control System/Displaying
& Reading Trouble Codes
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On operating and display module, Climatronic Control Module J255 , set "Auto" mode.
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"Automatic air recirculation" button - A - pressed (LED in button - A - lights).
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Wait 30 s to allow Air Quality Sensor G238 to warm up.
Indicated on display of Diagnostic Operation System VAS 5051A:
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Select function "08 - Reading measuring value block".
Indicated on display of Diagnostic Operation System VAS 5051A
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Prompt for entering display group appears in display zone -1 -. -
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Input keypad appears in display zone - 2 -.
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Use input keypad in display zone - 2 - to enter desired display group number "014". See: Testing and Inspection/Scan Tool Testing and
Procedures/Measuring Value Blocks (Function 08)
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Confirm entry with Q key.
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Read displays in zones "3" and "4".