BMW 735i 735iL 750iL 1988 - 1992 Electrical Troubleshooting Manual

This comprehensive Electrical Troubleshooting Manual provides detailed guidance for diagnosing and repairing electrical faults in the 1988 - 1992 BMW 735i, 735iL, and 750iL (E32) models.

Key Features and Benefits:

Step-by-step troubleshooting procedures guide you through the diagnostic process, identifying potential causes and solutions.
Detailed electrical schematics and diagrams visually represent the electrical systems, aiding in component identification and circuit tracing.
Important specifications and measurements ensure accurate and efficient repairs.
Tailored specifically for the 1988 - 1992 BMW 735i/735iL/750iL (E32), catering to their unique electrical system configurations.
Empowers users to perform electrical repairs themselves, saving time and money while gaining a deeper understanding of their vehicles.

Technical Specifications and Details:

Electrical System:

12-volt negative ground system
Battery capacity: 80 Ah
Alternator output: 120 amps

Major Electrical Components:

Engine control module (ECM)
Ignition coil
Starter motor
Voltage regulator
Headlight switch
Turn signal switch
Wiper switch

Maintenance and Repair Information:

Battery Replacement:

Recommended battery: BMW-approved 12-volt battery with 80 Ah capacity
Battery location: Under the hood, on the passenger side
Fuse and Relay Replacement:

Fuse and relay panel locations:
Under the hood, next to the battery
Inside the cabin, under the dashboard
Fuse and relay identification: Refer to the electrical troubleshooting manual for specific locations and ratings

Electrical Troubleshooting:

Use a multimeter to measure voltage, current, and resistance
Inspect wiring harness for damage or loose connections
Consult the electrical troubleshooting manual for circuit testing procedures
Common Electrical Problems and Solutions:

Battery Drain:

Symptoms: Difficulty starting the vehicle, dim headlights
Solution: Check for parasitic drains using a multimeter, inspect battery terminals for corrosion

Electrical Shorts:

Symptoms: Blown fuses, intermittent electrical failures
Solution: Inspect wiring harness for damage, repair or replace damaged wires

Ground Faults:

Symptoms: Electrical components not functioning properly
Solution: Check ground connections for tightness and corrosion, clean or repair as needed
This comprehensive 1992 BMW 735i, 735iL, 750iL (E32) Electrical Troubleshooting Manual is an indispensable resource for owners and technicians alike. Its detailed troubleshooting procedures, electrical schematics, and technical specifications empower you to diagnose and repair electrical faults with confidence and precision.

INDEX
Introduction
Systematic Troubleshooting
Symbols
Power Distribution Chart
Fuse Chart
Power Distribution
Fuse Details
Ground Distribution
Component Location Chart
Component Location Views
Splice Location Views
Connector Views

Language: English
Format: PDF


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