Operation CHARM
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Mercedes Benz
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1989
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300CE (124.050) L6-3.0L (103.983)
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Repair and Diagnosis
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Powertrain Management
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Engine Control Module
Engine Control Module
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Description and Operation
Fuel Injection (CIS-E)
California Models
Federal Models
Ignition (EZL/AKR)
Testing and Inspection
Initial Inspection and Diagnostic Overview
Pinout Values and Diagnostic Parameters
Voltage Measurements
Ohms Measurements
Locations
Electronic Ignition Control Unit (EZL)
CIS-E Control Unit
Engine Systems Control Unit (MAS)
Fuel Injection System (CIS-E)
LH Control Unit
Base Module
Diagrams
Diagram Information and Instructions
How to Use Information In Diagrams
Circuit Identification
Symbol Identification
Color Codes
Wiring
Vacuum
Diagnostic Aids
Connector Views
Electrical Diagrams
Specifications
Technical Service Bulletins
