Operation CHARM
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BMW
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1988
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325 (E30) L6-2693cc 2.7L SOHC (M20)
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Repair and Diagnosis
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Powertrain Management
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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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Testing and Inspection
35 Pin
Voltage Values
Ohms Values
55 Pin
Voltage Values
Ohms Values
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
Connector Views
35 Pin
55 Pin
Electrical Diagrams
Technical Service Bulletins