The BMW 850i (E31) is a flagship Grand Tourer produced for the 1991 model year, representing a pinnacle of luxury, performance, and advanced engineering. This sophisticated coupe is characterized by its striking, aerodynamic design, featuring a distinctive shark-nose front and pop-up headlights. At its heart lies a powerful 5.0-liter V12 engine, a rarity in its class, delivering exceptional performance and a smooth driving experience. The 850i was engineered to compete with the most prestigious luxury GTs of its era, offering a blend of comfort, technology, and dynamic capability that appealed to affluent individuals seeking a refined and exclusive driving machine.
This specialized electrical troubleshooting manual provides comprehensive guidance for the 1991 BMW 850i (E31). Its primary focus is on the intricate electrical systems, offering detailed diagnostic procedures, fault-finding techniques, and repair instructions for a wide array of components and subsystems. Coverage includes power distribution, fuses, grounding, engine control, charging and starting systems, transmission control, safety systems like ABS and SRS, power accessories, lighting, climate control, infotainment, cruise control, and security systems. The manual is designed to assist owners, technicians, and mechanics in accurately diagnosing and resolving electrical issues, ensuring the optimal performance and longevity of this complex vehicle.
Model Year 1991
Index
Introduction
Symbols
Power Distribution Chart
Fuse chart
power Distribution
Fuse Details
Ground Distribution
Data Link
Engine Control System
Charging System
Start
Electronic transmission control
Supplement restraint system
Slip control ABS
Power Mirrors
Centrol locking module
Power Windows
Power Seats
Heated Seats
Power Sun Roof
Horn
Wiperwasher Module
Headlight Washer
Windshield washer jet heaters
Instrument cluster
Multi Function Clock
Light switch details
Headlights/Fog lights
Turnhazard lights
Park/Tail/Underhood lights
Licence plate/luggage compartment lights
Back up lights
Brake Lights
Interior Lights
Glove box light/cassete box ashtry lights/charging socket
Crash Control module
Park, ventilation with HKR
Rear Window defogger
Integrated climate regulation
Radio/Cd player
radio/hifi
Cellular Telephone
Cruise Control tempomat
Anti Theft system
on Board Computer
Component Location Chaart
Component Location Views
Splice Location views
Connector views
Model Year 1991
Index
Introduction
Symbols
Power Distribution Chart
Fuse chart
power Distribution
Fuse Details
Ground Distribution
Data Link
Engine Control System
Charging System
Start
Electronic transmission control
Supplement restraint system
Slip control ABS
Power Mirrors
Centrol locking module
Power Windows
Power Seats
Heated Seats
Power Sun Roof
Horn
Wiperwasher Module
Headlight Washer
Windshield washer jet heaters
Instrument cluster
Multi Function Clock
Light switch details
Headlights/Fog lights
Turnhazard lights
Park/Tail/Underhood lights
Licence plate/luggage compartment lights
Back up lights
Brake Lights
Interior Lights
Glove box light/cassete box ashtry lights/charging socket
Crash Control module
Park, ventilation with HKR
Rear Window defogger
Integrated climate regulation
Radio/Cd player
radio/hifi
Cellular Telephone
Cruise Control tempomat
Anti Theft system
on Board Computer
Component Location Chaart
Component Location Views
Splice Location views
Connector views
