Operation CHARM
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BMW
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1991
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318i Convertible (E30) L4-1796cc 1.8L DOHC (M42)
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Repair and Diagnosis
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Sensors and Switches
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Sensors and Switches - Powertrain Management
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Sensors and Switches - Fuel Delivery and Air Induction
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Throttle Position Sensor
Throttle Position Sensor
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Description and Operation
Testing and Inspection
Component Tests and General Diagnostics
Oscilloscope Patterns and Waveforms
Throttle Position Sensor (TPS) Test
Example of Bad Throttle Position Sensor
Locations
Throttle Potentiometer
Throttle Valve Potentiometer
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
Specifications
Technical Service Bulletins
