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Audi
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1992
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80 Base, 2.3 C, Automatic
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Repair and Diagnosis
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Engine Performance
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Engine Controls - System/Component Tests
Engine Controls - System/Component Tests
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Introduction
Computerized Engine Controls
Control Unit
Fuel Injection Control Unit (FICU) Voltage Supply
Ignition Control Unit (ICU) Voltage Supply
Engine Sensors & Switches
A/C Compressor Clutch (On/Off Signal)
Altitude Sensor (Voltage Supply)
Coolant Temperature Sensor
Full Throttle Switch
Idle & Full Throttle Switch
Idle Switch
Oxygen (O2) Sensor
Relays
Fuel Pump Relay Control
Fuel System
Notes
Fuel Pressure Release
Fuel Delivery
Notes
System Pressure
Differential Pressure Regulator Fuel Pressure
Differential Pressure Regulator Electrical System
Residual Pressure
Cold Acceleration Enrichment
Deceleration Fuel Shutoff
Fuel Control
Oxygen (O2) Sensor Heating Element
Idle Control System
Ignition System
Notes
Timing Control Systems
Emission Systems & Sub-Systems
Fuel Evaporation