Symptom Troubleshooting [Engine Control System]

• Foreword
  • Notes
  • Troubleshooting Procedure
  • Repair Order Form
  • Action for Non-repeatable Malfunction
• Symptom Diagnostic Index
• Control System Device And Control Relationship Chart
• Quick Diagnostic Chart
• No.1 Blown Fuses
• No.2 Check Engine Light Illuminates
  • Notes
  • Diagnostic Procedure
• No.3 Will Not Crank
  • Notes
  • Diagnostic Procedure
• No.4 Hard To Start/Long Crank/Erratic Start/Erratic Crank
  • Notes
  • Diagnostic Procedure
• No.5 Engine Stalls-After Start/At Idle
  • Notes
  • Diagnostic Procedure
• No.6 Cranks Normally But Will Not Start
  • Notes
  • Diagnostic Procedure
• No.7 Engine Oil Pressure Warning Light Illuminates
  • Notes
  • Diagnostic Procedure
• No.8 Engine Runs Rough/Rolling Idle
  • Notes
  • Diagnostic Procedure
• No.9 Fast Idle/Runs On
  • Notes
  • Diagnostic Procedure
• No.10 Low Idle/Stalls During Deceleration
  • Notes
  • Diagnostic Procedure
• No.11 Engine Stalls/Quits, Engine Runs Rough, Misses, Buck/Jerk, Hesitation/Stumble, Surges
  • Notes
  • Diagnostic Procedure
• No.12 Lack/Loss Of Power-Acceleration/Cruise
  • Notes
  • Diagnostic Procedure
• No.13 Knocking/Pinging-Acceleration/Cruise
  • Notes
  • Diagnostic Procedure
• No.14 Poor Fuel Economy
  • Notes
  • Diagnostic Procedure
• No.15 Emission Compliance
  • Notes
  • Diagnostic Procedure
• No.16 High Oil Consumption/Leakage
  • Notes
  • Diagnostic Procedure
• No.17 Cooling System Concerns-Overheating
  • Notes
  • Diagnostic Procedure
• No.18 Cooling System Concerns-Runs Cold
  • Notes
  • Diagnostic Procedure
• No.19 Exhaust Smoke
  • Notes
  • Diagnostic Procedure
• No.20 Fuel Odor (In Engine Compartment)
  • Notes
  • Diagnostic Procedure
• No.21 Engine Noise
  • Notes
  • Diagnostic Procedure
• No.22 Vibration Concerns (Engine)
  • Notes
  • Diagnostic Procedure
• No.23 A/C Does Not Work Sufficiently
  • Notes
  • Diagnostic Procedure
• No.24 A/C Is Always On Or A/C Compressor Runs Continuously
  • Notes
  • Diagnostic Procedure
• No.25 A/C Is Not Cut Off Under Wide Open Throttle Conditions
  • Notes
  • Diagnostic Procedure
• No.26 Exhaust Sulphur Smell
  • Notes
  • Diagnostic Procedure
• No.27 Fuel Refill Concerns
  • Notes
  • Diagnostic Procedure
• No.28 Fuel Filling Shut Off Concerns
  • Notes
  • Diagnostic Procedure
• No.29 Spark Plug Condition
  • Notes
  • Diagnostic Procedure
• Intermittent Concern Troubleshooting
  • Vibration Method
    • Notes
    • Inspection Method for Switch Connectors or Wires
    • Inspection Method for Sensor Connectors or Wires
    • Inspection Method for Sensors
    • Inspection Method for Actuators or Relays
  • Water Sprinkling Method
• Engine Control System Operation Inspection
  • Main Relay Operation Inspection
  • Intake Manifold Vacuum Inspection
  • Electric Variable Valve Timing Driver Control System Inspection
  • Engine Oil Solenoid Valve Control System Inspection
  • Drive-by-wire Control System Inspection
    • Engine coolant temperature compensation inspection
    • Load compensation inspection
    • Electronic Control Throttle Operation Inspection
    • Brake override system operation inspection
  • Fuel Injector Operation Inspection
  • Fuel Cut Control System Inspection
  • Fuel Pump (Low-pressure Side) Operation Inspection
  • Fuel Pump (Low-pressure Side) Control System Inspection
  • Spark Test
  • Purge Control System Inspection
  • A/C Cut-off Control System Inspection
  • Cooling Fan Control System Inspection
  • Hydraulic Variable Valve Timing Control System Operation Inspection
  • Evaporative Emission (EVAP) System Leak Inspection
    • Notes
    • EVAP system leak inspection using the M-MDS
      • EVAP system test out line
      • EVAP system test description
      • EVAP system malfunction judgment
      • Evaporative system test procedure
      • EVAP system leak inspection using leak tester