BMW 735i 735iL 750iL 1990 Electrical Troubleshooting Manual
This comprehensive Electrical Troubleshooting Manual provides detailed guidance for diagnosing and repairing electrical faults in the 1990 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 1990 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 1990 BMW 735i/735iL/750iL (E32) Electrical Troubleshooting Manual (PN 89 89 1 000 331) 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.
CONTENTS
- 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
Pages: 475