A4 Quattro Wagon V6-3.2L (BKH) (2005)
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Plug connectors - D - and - F - to operating and display module, Climatronic Control Module J255 (all connectors are now plugged in at operating
and display module, Climatronic Control Module J255 ).
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Guide wire to connector - F - contact "1" through Inductive Pickup (50 Amp) VAS 5051/9.
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On Diagnostic Operation System VAS 5051 A , set "Multi-meter measurement: inductive pickup (50 amp)" mode.
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Set both thumb wheels for heated seats (at operating and display module, Climatronic Control Module J255 ) to position "0".
NOTE: All connectors must be plugged in at the operating and display module, Climatronic Control Module J255.
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Start engine.
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Set thumb wheel for heated driver seat to position "6".
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Specified value: Display switches from approx. 0 A to less than 10 A
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Set thumb wheel for heated driver seat to position "0".
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Specified value: Display switches from less than 10 A to approx. 0 A
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Guide wire to connector - F - contact "2" (contact "1" on right-hand drive vehicles) through Inductive Pickup (50 Amp) VAS 5051/9.
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Set thumb wheel for heated front passenger seat to position "6".
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Specified value: Display switches from approx. 0 A to less than 10 A
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Set thumb wheel for heated front passenger seat to position "0".
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Specified value: Display switches from less than 10 A to approx. 0 A
NOTE:
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Interference on the current probe measuring leads 1 2 may cause a slight current to be displayed with the seat heating switched off.
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In the event of an open circuit or a short circuit in the connection to the seat temperature sensor, the output to the heater element is does not
switch by the operating and display module, Climatronic Control Module J255.
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In the event of a short to Ground (GND) in the seat heater element or in the wiring, the operating and display module, Climatronic Control
Module J255 does not switch on the heating (immediate deactivation as soon as current is too high).
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The design of the seat heater elements differs. Depending on heater element design there is thus a possibility of the two side bolsters being
constantly heated, e.g. in the event of an open circuit in the seat cushion heater element (the temperature sensor is located in the seat cushion).
