Target Audience:
BMW enthusiasts, independent repair shops, DIY mechanics specializing in older BMWs
Value Proposition:
Provides essential, often scarce, technical documentation for maintaining and repairing complex electrical systems in a wide range of classic and modern classic BMWs.
Data Accuracy:
Based on official BMW factory documentation, ensuring high accuracy for troubleshooting and repair.
Searchability:
PDF format allows for easy searching of specific terms, components, and system names.
Powertrain Electrical:
Engine control, fuel injection, ignition systems, emission control systems
Chassis Electrical:
Brake systems (ABS), steering systems (power steering, active steering), suspension systems (active suspension)
Body Electrical:
Lighting (headlights, taillights, interior), power windows, power locks, central locking, mirrors, wipers, wash systems, climate control, seat adjustments
Instrumentation And Diagnostics:
Instrument cluster, warning lights, diagnostic connectors (e.g., OBD-I), fault code interpretation
Comfort And Convenience:
Audio systems, cruise control, alarm systems, keyless entry (where applicable)
Troubleshooting Methodology:
Systematic diagnostic procedures, symptom-based troubleshooting guides, flowcharts
Component Testing:
Testing procedures for sensors, actuators, relays, fuses, motors, and control modules
Wiring Diagrams:
Detailed electrical wiring schematics, component location diagrams, connector views
Diagnostic Codes:
Interpretation of fault codes, diagnostic trouble codes (DTCs) for the specified model years
Depth:
Comprehensive coverage from basic component testing to advanced circuit analysis and module diagnosis
Engine Varieties:
Covering a wide range of BMW engines including M10, M20, M30, M40, M42, M43, M50, M52, M60, M70, S14, S38, M62, and diesel engines (M21, M51) across the model years.
Performance Impact:
Enables diagnosis and correction of issues affecting engine performance, power output, and fuel efficiency.
Fuel Injection Systems:
Details for Bosch Motronic (various versions), L-Jetronic, K-Jetronic, and early Diesel injection systems.
Transmission Types Covered:
Manual transmissions (Getrag, ZF) and automatic transmissions (ZF, GM)
Transmission Variations:
Includes coverage for different gear ratios and electronic control modules for automatic transmissions.
Electrical Control:
Troubleshooting for electronic transmission control units (EGS) and shift solenoids.
Safety Systems Coverage:
Anti-lock Braking System (ABS), Traction Control System (ASC/ASC+T), early airbag systems.
Active Safety Diagnostics:
Diagnosis of wheel speed sensors, ABS control modules, hydraulic units, and traction control sensors.
Passive Safety Diagnostics:
Troubleshooting of airbag control modules, impact sensors, and pre-tensioners (where applicable).
Audio Systems Diagnostics:
Troubleshooting for factory-installed radio units, amplifiers, and speaker systems.
Cruise Control Troubleshooting:
Diagnostic procedures for cruise control systems, including vacuum lines (older), electronic modules, and stalk switches.
Vehicle Network Diagnostics:
Covers the transition from basic wiring to early forms of vehicle communication buses (e.g., K-bus, CAN bus for later models).
Electrical Component Checks:
While not a schedule, the ETM provides information to diagnose and address issues that would otherwise prevent proper operation, indirectly supporting maintenance.
Diagnostic Tools:
Information on required diagnostic tools and their interfaces for the relevant years (e.g., GT1, INPA for later models).
Common Electrical Faults:
Addresses common electrical gremlins of the era, such as ABS sensor failures, window regulator issues, central locking problems, and ECU failures.
Bmw Engineering:
Reflects BMW's focus on driver engagement and advanced engineering during this period.
Electrical Complexity Growth:
Documents the significant increase in electrical and electronic system complexity from the early 1980s to the early 2000s.
Supported Models Overview:
Encompasses iconic models such as the E30 3 Series, E28/E34/E39 5 Series, E24 6 Series, E32/E38 7 Series, and the Z3 roadster/coupe.