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The BMW 325ix was produced from 1988 to 1991, and featured all-wheel drive. android market . It was available as a two-door (saloon) or a four-door (sedan) and as touring. The bmw 325iX wiring diagram electrical schematics following article provides detail procedures for maintaining, inspection, trouble diagnose, and repairing the 1990 BMW 325iX Electrical System.This manual is divided into following sections: Index, How to Use This Manual, Wire Size Conversion Chart, Wiring Diagram and Electrical Parts Symbols, Systematic Troubleshooting, Connector Views, Power Distribution Box, Fuse Data, Component Location Chart, Component Location View, and Splice Locations Views.This manual also covers topics on: Power Distribution System, Charging and Starting System, Electronics Injection System, Supplemental Restraint System, Brake Warning System, Antilock Braking System, Power Mirror, Central Locking, Power Windows, Seats, Sunroof, Body Electrical System, Wiper and Washer, Instrument Cluster, Active Check Control, Light Switch Details, Headlight, Turn and Hazard Lights, Heating and Air Conditioning, Radio, Antenna and Power Antenna, etc. Here is a quotation from the voltage drop testing section.Wires, connectors and switches are designed to conduct current with a minimum loss of voltage. A voltage drop of more than one volt indicates a problem. Affiliate Marketing . To test a voltage drop, connect the voltmeter leads to connectors at either end of circuits suspected problem area. The positive lead should be connected to the connector closest to the power source. The voltmeter will show the voltage drop between these two points.

Download: 1988 – 1991 BMW 325iX Electrical Troubleshooting Manual Harness and Schematics

The E28 5-Series models were introduced in October 1981, and were superseded
in June 1988 by the revised E34 5-Series range, Touring versions of which
became available from March 1992.
Throughout this manual, E28 models are also referred to as “oldshape”, while
E34 models are designated “new-shape”.
The models covered by this manual are equipped with single overhead cam
in-line four- and six-cylinder engines. Early 316 and 518 models are fitted
with carburettors, but all other models are fitted with fuel injection systems. Transmissions are a five-speed manual, or three- or four-speed automatic.


The transmission is mounted to the back of the engine, and power is transmitted
to the fully-independent rear axle through a twopiece propeller shaft. The final drive unit is bolted solidly to a frame crossmember, and drives the rear wheels through driveshafts equipped with inner and outer constant velocity joints.
The front suspension is of MacPherson strut type, with the coil spring/shock
absorber unit making up the upper suspension link. The rear suspension is
made up of coil springover-shock absorber struts, or coil springs and conventional shock absorbers, depending on model.download BMW 3 & 5 Series (1983 1991) Service And Repair Manual