Operation CHARM
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BMW
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1989
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635CSi (E24) L6-3430cc 3.4L SOHC (M30)
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Engine Control Module
Engine Control Module
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Description and Operation
Testing and Inspection
Component Tests and General Diagnostics
Battery Voltage
DME Control Unit
Oscilloscope Patterns and Waveforms
Power Supply (B+) Test
Example of Open In Power Supply (B+) Circuit
Sensor Reference (VREF) Test
Locations
Service and Repair
Diagrams
Diagram Information and Instructions
Wire Color Code Identification
Component ID (General List)
Part 1 A
Part 2 B
Part 3 C-G
Part 4 H-M
Part 5 N-Z
Symbol Identification and Diagram Information
Diagnostic Aids
Troubleshooting Procedures
Troubleshooting Tools
Troubleshooting Tests
Voltage Test
Voltage Drop Test
Continuity Test
Short Test Using Voltmeter
Short Test Using Ohmmeter
Current Test Using Ammeter
Electrical Diagrams
Technical Service Bulletins
