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COMPONENTS CONTROLLED BY A/C SYSTEM, ELECTRICAL TEST Audi A4 B8

Air Conditioning (avant) ~158 words

COMPONENTS CONTROLLED BY A/C SYSTEM, ELECTRICAL TEST

Note. Various vehicle electrical components (e.g. Heated Rear Window -Z1- and heated seats) that do not belong to the heater are activated by the Climatronic Control Module -J255-. On the heated rear window for example, the switch on request is sent over the data bus system to the Comfort System Central Control Module -J393- ; the comfort system central control module then controls, via the Rear Window Defogger Relay -J9- the heated rear window. Wiring Diagram. Electrical testing of these components must be performed as described in Guided Fault Finding for the A/C system and the Central Control Unit for Comfort Systems. -J393- using the Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding".

  1. Checking the heated rear window, refer to «HEATED REAR WINDOW, CHECKING»(/audi/a4/b8-2007-2012/remont/automatic-hvac-system/#air-conditioning-avant__heated-rear-window-checking) .
  2. Front Seat Heating and Ventilation, checking, refer to «FRONT SEAT HEATING AND VENTILATION, CHECKING»(/audi/a4/b8-2007-2012/remont/automatic-hvac-system/#air-conditioning-avant__front-seat-heating-and-ventilation-checking) .