Engine General Information & Diagnosis - Qr25DE (1 Of 5)

• Precautions
  • Precautions: On Board Diagnosis (OBD) System of Engine and A/T
  • Precaution for Work
• General Description
  • Multiport Fuel Injection System: System Description
    • Input/Output Signal Chart
    • System Description
    • Various Fuel Injection Increase/Decrease Compensation
    • Mixture Ratio Feedback Control (Closed Loop Control)
      • Notes
      • Open Loop Control
    • Mixture Ratio Self-Learning Control
    • Fuel Injection Timing
      • Notes
      • Sequential Multiport Fuel Injection System
      • Simultaneous Multiport Fuel Injection System
    • Fuel Shut-Off
  • Electric Ignition System: System Description
    • Input/Output Signal Chart
    • System Description
  • Air Conditioning Cut Control: Input/Output Signal Chart
  • Air Conditioning Cut Control: System Description
  • ASCD: System Description
    • Input/Output Signal Chart
    • Basic ASCD System
    • Set Operation
    • Accelerate Operation
    • Cancel Operation
    • Coast Operation
    • Resume Operation
  • ASCD: Component Description
    • ASCD Steering Switch
    • ASCD Brake Switch
    • ASCD Clutch Switch
    • Stop Lamp Switch
    • Electric Throttle Control Actuator
    • ASCD Indicator
  • CAN Communication: System Description
  • Intake Valve Timing Control: Description
    • System Description
  • Fuel Filler Cap Warning System: System Description
    • Input/Output Signal Chart
      • Input
    • System Description
      • Output
  • OBD System: Diagnosis Description
  • 1st Trip Detection Logic and Two Trip Detection Logic
  • DTC and Freeze Frame Data
    • DTC and 1st Trip DTC
    • Freeze Frame Data and 1st Trip Freeze Frame Data
  • Counter System
    • Relationship Between MIL, 1st Trip DTC, DTC, and Detectable Items
    • Counter System Chart
    • Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns for "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
    • Explanation for Driving Patterns Except for "Misfire ", "Fuel Injection System"
      • Driving Pattern B
      • Driving Pattern C
      • Driving Pattern A
    • Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns Except for "Misfire <Exhaust Quality Deterioration>", "Fuel Injection System"
  • Driving Pattern
    • Notes
    • Driving Pattern A
    • Driving Pattern B
    • Driving Pattern C
  • OBD System: Introduction
  • OBD System: Two Trip Detection Logic
• Schematic and Routing Diagram
  • Engine Control System: System Diagram
  • Fuel Filler Cap Warning System: System Diagram
• Component Location
  • Engine Control Component Parts Location
• Diagnostic Information and Procedures
  • Diagnosis and Repair Work Flow
    • Introduction
    • Work Flow
      • Overall Sequence
      • Detailed Flow
    • Diagnostic Worksheet
      • Description
      • Worksheet Sample
  • Basic Inspection
  • Idle Speed and Ignition Timing Check
    • Idle Speed
      • With SDT
      • With GST
    • Ignition Timing
  • Procedure After Replacing ECM
    • Procedure After Replacing ECM
    • VIN Registration
      • Description
      • Operation Procedure
        • With SDT
    • Accelerator Pedal Released Position Learning
      • Description
      • Operation Procedure
    • Throttle Valve Closed Position Learning
      • Description
      • Operation Procedure
    • Idle Air Volume Learning
      • Description
      • Preparation
      • Operation Procedure
        • With SDT
        • Without SDT
      • Diagnostic Procedure
  • VIN Registration
    • Description
    • Operation Procedure
  • Accelerator Pedal Released Position Learning
    • Description
    • Operation Procedure
  • Throttle Valve Closed Position Learning
    • Description
    • Operation Procedure
  • Idle Air Volume Learning
    • Description
    • Preparation
    • Operation Procedure
    • Diagnostic Procedure
  • How to Set SRT Code: Description
    • Outline
    • SRT Item
    • SRT Service Procedure
  • How to Set SRT Code: SRT Set Driving Pattern
  • How to Set SRT Code: Work Procedure
  • System Readiness Test (SRT) Code
    • Notes
    • SRT Set Timing
  • Malfunction Indicator Lamp (MIL)
  • On Board Diagnosis Function
    • On Board Diagnosis Item
    • Bulb Check Mode
      • Description
      • Operation Procedure
    • SRT Status Mode
      • Description
      • Operation Procedure
    • Malfunction Warning Mode
      • Description
      • Operation Procedure
    • Self-Diagnostic Results Mode
      • Description
      • How to Set Self-diagnostic Results Mode
      • How to Read Self-diagnostic Results
      • How to Erase Self-diagnostic Results
  • SDT Function
    • Function
    • Utility Mode
      • Work Item
    • DTC Check Mode
      • DTC Check Item
      • How to Read DTC and 1st Trip DTC
      • How to Erase DTC and 1st Trip DTC
      • Freeze Frame Data and 1st Trip Freeze Frame Data
    • Data list Mode
      • Monitored Item
    • Active Test Mode
      • Test Item
    • Utility (Readiness Test / DTC Work Support) Mode
      • Readiness Mode
      • DTC Work Support Mode
    • Engine Control Component Parts/Control Systems Application
  • SDT Reference Value in Data list Mode
  • OBD System: GST (Generic Scan Tool)
  • Generic Scan Tool (GST) Function
    • Description
    • Function
    • Inspection Procedure
  • ECM Harness Connector Terminal Layout
  • ECM Terminal and Reference Value
    • Preparation
    • ECM Inspection Table
  • Fail-safe Chart: ECM
  • DTC Inspection Priority Chart: ECM
  • DTC Index: ECM
    • Emission-Related Diagnostic Information Items
  • Test Value And Test Limit
  • Emission-related Diagnostic Information
    • DTC And 1ST Trip DTC
    • Freeze Frame Data And 1ST Trip Freeze Frame Data
    • System Readiness Test (SRT) Code
      • Notes
      • SRT Item
      • SRT Set Timing
      • SRT Service Procedure
      • How to Display Readiness Test
        • With SDT
        • With GST
        • No Tools
      • How to Set SRT Code
        • Notes
        • With SDT
        • Without SDT
      • Driving Pattern
    • How To Erase Emission-Related Diagnostic Information
      • How to Erase DTC
        • With SDT
        • With GST
        • No Tools
  • Normal Operating Condition: Fuel Cut Control (at No Load and High Engine Speed)
    • Input/Output Signal Chart
    • System Description
  • DTC Index