Engine Controls - Trouble Shooting - No Codes

• Introduction
• Model Identification
• Connecting Socket Box
• Component/Circuit Identification
• Me-SFI Control Module Connector Identification
• Symptoms
  • Notes
  • Engine Does Not Start Easily When Cold & Does Not Accelerate Well
    • Actuation Of Fuel Injectors & Injection Time
    • Hot Film Mass Airflow (MAF) Sensor (B2/5)
    • ECT Sensor (B11/4)
    • Ignition Voltage Too Low
    • Air Leak
  • Engine Does Not Start
    • No Voltage Supply
    • Malfunction In Drive Authorization System (DAS)
    • Fuel Pump
    • No Compression Pressure As Oil Pressure Too High
    • Ignition Voltage Too Low
  • Engine Has Poor Output
    • Three-Way Catalytic Converter Flow Too Low
    • Left/Right O2 Sensor Before TWC
    • ECT Sensor (B11/4)
    • Hot Film MAF Sensor (B2/5)
    • Variable Intake Manifold Inoperative
    • Knock Control On Control Stop
  • Engine Does Not Run Smoothly (Shakes)
    • Actuation Of Fuel Injectors & Injection Time
    • Fuel Injectors Leaking
    • Fuel Injector Spray Pattern
    • Left O2 Sensor Before TWC
    • Right O2 Sensor Before TWC
    • Ignition Voltage Too Low
    • Compression Pressure Of One Or More Cylinders Too Low
    • Air Leak
    • Exhaust Gas Recirculation Valve Leaking/Jams
  • Engine Does Not Run Smoothly (Misfire)
    • Ignition Voltage Too Low
    • Hot Film MAF Sensor (B2/5)
  • Engine Hunts After Cold Start
    • Air Leak
  • Transition Fault When Running Warm
    • ECT Sensor (B11/4)
    • Hot Film MAF Sensor (B2/5)
    • Air Leak
  • Transition Fault When Warm Or With Poor Fuel Economy
    • Left/Right O2 Sensor Before TWC
    • Purge Control Valve (Y58/1) Permanently Open (Jams)
  • Engine Jolts
    • Hot Film MAF Sensor (B2/5)
    • Ignition Voltage Too Low
    • Left/Right O2 Sensor Before TWC
  • Electronic Accelerator Is In Limp-Home Function
    • Set Value Potentiometer In Pedal Value Sensor
    • Actual Value Potentiometer In Actuator
• Signal Pattern Identification