diyspanner Posted August 18, 2019 Share Posted August 18, 2019 2009 A3 8P 1.9 TDI, BLS engine. I want to crank the engine to test the battery voltage drop off. Which fuse or relay should I pull out to stop the engine starting? Does anyone know what the typical voltage should be across the battery on tick over? I'm trying to diagnose if its the battery or alternator at fault. Quote Link to comment Share on other sites More sharing options...
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