Digital Control System - Turbo & QUATTRO

• Description
• Operation
  • Fuel Control
    • Fuel Pump & Relay
    • Mixture Control Unit (MCU)
    • Electronic Control Unit (ECU)
    • Cranking Enrichment
    • Warm-Up Enrichment
    • Oxygen Sensor
  • Ignition Control
    • Notes
    • Engine RPM Speed Sensor
    • Ignition Timing Reference Sensor
    • Knock Sensor
  • Idle Control
    • Idle Speed Control
  • Other Controls
• Diagnosis & Testing
  • Cold Start Enrichment
    • Cold Start Valve
    • Cranking Enrichment & Cold Engine Warm-Up Enrichment
  • Fuel Delivery & System Pressures
    • System Pressure
    • Residual Pressure & Internal Leak Testing
    • Main Pump Delivery Volume
    • Injector Quantity Comparison
  • Self-Diagnosis & Electrical System Testing
    • Input Codes
    • Output Codes
  • Electrical Components (Fuel System)
    • ECU Voltage Supply
    • Fuel Pump Relay
    • Air Temperature Sensor
    • Coolant Temperature Sensor
    • Cold Start Valve Operation (Code 4443)
    • Cold Crank Enrichment
    • Cold Engine Warm-Up Enrichment
    • Full Throttle Enrichment
    • Deceleration Fuel Shut-Off Check (Man. Trans. Only)
    • Oxygen Sensor Heating Element
    • OXS Frequency Valve (Code 4441)
  • Component Testing (Ignition System)
    • ECU Voltage Supply
    • Tachometer Signal Output
    • Engine Speed Sensors
    • Hall Effect Sending Unit
    • Knock Sensor
    • Coil Resistance Check
    • Ignition Coil Power (Transistor) Stage
    • Spark Plug Wires & Rotor
    • Throttle Valve Switch
  • Component Testing (Idle Stabilization)
    • Idle Speed Stabilization System
  • Component Testing (Other Devices)
    • Charcoal Canister Shut-Off Valve (Code 4442)
    • Wastegate Frequency Valve (Code 4442)
    • Temperature Safety Switch
    • Boost Pressure Indicator
• Adjustments
  • Airflow Sensor Plate
    • Centering Sensor Plate & Lever
    • Sensor Plate Rest Position
  • Throttle Valve Housing
    • Notes
    • Throttle Switch
  • System Pressure
    • Fuel Pressure