The electrical troubleshooting manual consists of 2 parts: schematics and diagnosis. The purpose of the diagnosis part is to provide assistance in troubleshooting of the complete vehicle electrical system. It also serves as a supplement to the BMW diagnostic system. This manual covers the 8 series (E31) as of model year 1990. The diagnosis part is divided into individual sections. The individual system-related sections are subdivided into chapters.
Introduction, diagnostic system, digital engine electronics, electronic throttle control electronic transmission control, electrical steering column adjustment, steering column memory, airbag, automatic stability control, automatic stability control plus traction, electronic damper control, door lock heating, central locking system, power windows, sunroof, seat/mirror memory, central body electronics, electric sunshade, windscreen wiper/washer system, windscreen wiper pressure control headlight washer, electronic vehicle module, instrument cluster, lamp control module, interior lights, automatic climate control, anti theft system, multi-information display. Airbag, defect code table, failure warning lamp, troubleshooting, checking the seed sensors, defect symptoms, display logic, engine drag torque control, flash code, activate, readout, ignition intervention, safety information, simulating control mode, throttle control, brake intervention, checking the speed sensors, display logic, ignition timing, safety circuits, transmission intervention. Central locking system block diagram. Emission control ignition circuit monitoring, ignition control, injection control, interconnected system of signals, tank ventilation, technical data.
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