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Service Electrical system; General information Edition 08.2015 Service Department. Technical Information Service List of Workshop Manual Repair Groups Repair Group 27 Starter, current supply, CCS 92 Windscreen wash/wipe system 94 Lights, bulbs, switches exterior 96 Lights, bulbs, switches interior 97 Wiring Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed. A005AA00420 Audi A1 2011 ➤ , Audi A2 2001 ➤ , Audi A3 2004 ➤ , Audi A3 2013 ➤ , Au Electrical system; General information Edition 08.2015 Contents 27 Starter, current supply, CCS 1 1 Battery 1 1.1 Basic information on the battery 1 1.2 Battery types 1 1.3 Warnings and safety precautions 3 1.4 Battery terminal screw connection 6 2 Checking battery 7 2.1 Test sequence 7 2.2 Visual check 9 2.3 Checking colour indicator of magic eye 10 2.4 Checking battery using vehicle diagnostic tester 11 2.5 Battery tester with printer VAS 6161 13 2.6 Battery tester with printer VAS 5097 A 18 2.7 Current draw test 23 2.8 Checking no load voltage of battery, stock vehicles 25 3 Charging battery 26 3.1 Battery charger VAS 5095 A 26 3.2 Battery charger VAS 5900 31 3.3 Battery charger VAS 5903 43 3.4 Battery charger VAS 5906 55 3.5 Solar panel VAS 6102 A 58 3.6 Totally discharged batteries 59 4 Alternator 61 4.1 Checking alternator 61 4.2 Bosch alternator up to 2000 exploded view 61 4.3 Bosch alternator from 2001 onwards exploded view 63 4.4 Removing and installing voltage regulator Bosch alternator from 2001 onwards 64 4.5 Bosch alternator from 2007 onwards exploded view 64 4.6 Removing and installing voltage regulator Bosch alternator from 2007 onwards 65 4.7 Checking