BMW E12 L-Jetronic Fuel Injection Systems Schematic Diagram

The following article discuss on L-Jetronic Fuel Injection Systems for BMW E12 which covers following topics: Basic Engine  Combustion Process, Combustion Requirements, Fuel Delivery Implementations, Electronic Fuel Injection System Components, L-Jetronic System, Troubleshooting, Conversion to Lambda Control, and Performance. The fuel injections system consist of throttle and idle/WOT switches, Air Mass Measurement, Fuel Pump, Fuel Injectors, Pressure regulation, Control Unit (some with O2 control), Combo Relay, Cold Start, Warm up enrichment, Warm up Idle compensation.
The L-Jetronic System – Control Unit (ECU) takes sensor information such as AFM flow and temperature, Engine RPM (from ignition), Warm up information (from coolant temperature sensor), Throttle mode (idle and WOT switches), O2 sensor in Lambda systems. Then calculates opening duration of injectors. This ‘map’ is hardwired into system (there’s no chip available to modify).

Get detail information about BMW E12 L-Jetronic Fuel Injection Systems Schematic Diagram here – free download PDF file.

1994 BMW E31 840Ci 850Ci 850CSi Electrical Wiring Diagram Schematics Harness and Circuit

The BMW 8 Series (chassis code BMW E31) is a V8 or V12-engined 2-door 2+2 coupe built by BMW from 1989 to 1999.

The following electrical wiring diagram schematics harness and circuit troubleshooting manual apply for BMW E31 series including 840Ci, 850Ci and 850CSi 1994 models. The schematic diagram divide the entire vehicle electrical system into individual circuits, interacting electrical components are shown on one common schematic. Switches, relay, fuse, connectors and other components are represented in such way that their general layout and function are self-explicit. The components and wires are not drawn to scale. To ensure clear arrangement, all connectors, lines branches and connected components from the fuses to the components and vice versa are not shown within the individual cells.

This manual covers schematics and circuit diagram of the following electrical components/functions: Power Distribution Chart, Fuse Chart, Power Distribution, Fuse Details, Ground Distribution, Data Link, Engine Control System, Charging System, Starting System, Electronic Throttle Control, E-Box Fan, Electronic Transmission Control, Electric Steering Column Adjustment, SRS, Air Bag, Power Assists Steering, Servotronic, Slip Control, Electronic Shock Absorber Control, Headlight, Horn, Washer, Wiper, Instrument Cluster, etc.
Find more information about 1994 BMW E31 840Ci 850Ci 850CSi Electrical Wiring Diagram Schematics Harness and Circuit here. (source: wikipedia.com, wedophones.com). Other BMW Automotive Wiring Diagram you might be interested in.