Engine Controls - 2.0L (L34 GMDAT) - Description And Operation

• Description and Operation
  • Engine Control Module Description
    • Notes
    • Comprehensive Component Monitor Diagnostic Operation
    • Input Components
    • Output Components
    • Passive and Active Diagnostic Tests
    • Warm-Up Cycle
    • Freeze Frame
    • Failure Records
    • Common OBD Terms
      • Diagnostic
        • Notes
        • Enable Criteria
        • Trip
        • Diagnostic Information
        • Malfunction Indicator Lamp (MIL)
        • Extinguishing the MIL
        • Data Link Connector (DLC)
    • Primary System-Based Diagnostics
    • Oxygen Sensor Diagnosis
    • Misfire Monitor Diagnostic Operation
    • Misfire Counters
    • Fuel Trim System Monitor Diagnostic Operation
    • Fuel Trim Cell Diagnostic Weights
  • Fuel System Description
    • Fuel System Overview
    • Fuel Tank
    • Fuel Fill Pipe
    • Fuel Filler Cap (Typical)
    • Fuel Level Sensor
    • Fuel Pump
    • Fuel Sender Strainers
    • Fuel Filter
    • Fuel Pressure Regulator
    • On-Board Refueling Vapor Recovery (ORVR) System
    • Fuel Feed Pipes
    • Nylon Fuel Pipes
    • Quick-Connect Fittings
    • Fuel Pipe O-Rings
    • Fuel Rail
    • Fuel Injectors
    • Fuel Pump Relay
    • Engine Fueling
    • Sequential Fuel Injection (SFI)
      • Notes
      • Starting Mode
    • Clear Flood Mode
    • Run Mode
    • Acceleration Mode
    • Deceleration Mode
    • Battery Voltage Correction Mode
    • Fuel Shut-Off Mode
  • Evaporative Emission Control System Description
    • EVAP System Operation
    • Large Leak Test
    • Small Leak Test
    • Canister Vent Restriction Test
    • Purge Valve Leak Test
    • EVAP System Components
      • Notes
      • EVAP Canister
      • EVAP Purge Solenoid Valve
      • EVAP Vent Solenoid Valve
      • Fuel Tank Pressure Sensor
      • EVAP Service Port
    • Evaporative Emission System Tester
    • On Board Refueling Vapor Recovery (ORVR) System
  • Electronic Ignition System Description
    • Notes
    • Crankshaft Position (CKP) Sensor
    • Crankshaft Reluctor Wheel
    • Camshaft Position (CMP) Sensor
    • Camshaft Reluctor Wheel
    • Ignition Coils (IC)
    • Engine Control Module (ECM)
    • Modes of Operation
    • Noteworthy Ignition Information
  • Knock Sensor System Description
    • Purpose
    • Sensor Description
  • Exhaust Gas Recirculation (EGR) System Description
    • Notes
    • EGR Valve Circuits
    • EGR Diagnostics
  • Crankcase Ventilation System Description
    • Notes
    • Operation
    • Results Of Incorrect Operation
  • Air Intake System Description
    • Air Induction System