Symptom Troubleshooting - Engine Control

• Engine Control System Operation Inspection
  • Special Service Tool (SST)
  • 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
    • Wastegate Valve 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
    • EGR Valve Operation Inspection
    • A/C Cut-off Control System Inspection
    • Cooling Fan Control System Inspection
  • Hydraulic Variable Valve Timing Control System Operation Inspection
    • When idling cannot be continued
    • When idling can be continued
    • Evaporative Emission (EVAP) System Leak Inspection
• Foreword
  • Notes
  • Troubleshooting Procedure
  • Repair Order Form
  • Action For Non-Repeatable Malfunction
• Intermittent Concern Troubleshooting
  • Vibration Method
  • 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
• 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 Warning Light Illuminated/Message Related To Engine Hydraulic Pressure Malfunction Indicated In Display
  • 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 Exhaust Sulphur Smell
  • Notes
  • Diagnostic Procedure
• NO. 26 Fuel Refill Concerns
  • Notes
  • Diagnostic Procedure
• NO. 27 Fuel Filling Shut Off Concerns
  • Notes
  • Diagnostic Procedure
• NO. 28 Spark Plug Condition
  • Notes
  • Diagnostic Procedure
• Quick Diagnostic Chart
• Symptom Diagnostic Index
  • Notes
  • Diagnostic Index