Symptom Troubleshooting [Engine Control System (AJ)
- Control System Device And Control Relationship Chart
- Foreword
- Intermittent Concern Troubleshooting
- Symptom Diagnostic Index
- Symptom Quick Diagnosis Chart
- No.1 Melting Of Main Or Other Fuses
- No.2 Mil Illuminates
- No.3 Will Not Crank
- No.4 Hard Start/Long Crank/Erratic Start/Erratic Crank
- No.5 Engine Stalls-After Start/At Idle
- No.6 Cranks Normally But Will Not Start
- No.7 Slow Return To Idle
- No.8 Engine Runs Rough/Rolling Idle
- No.9 Fast Idle/Runs On
- No.10 Low Idle/Stalls During Deceleration
- No.11 Engine Stalls/Quits, Engine Runs Rough, Misses, Buck/Jerk, Hesitation/Stumble, Surges
- No.12 Lack/Loss Of Power-Acceleration/Cruise
- No.13 Knocking/Pinging-Acceleration/Cruise
- No.14 Poor Fuel Economy
- No.15 Emission Compliance
- No.16 High Oil Consumption/Leakage
- No.17 Cooling System Concerns-Overheating
- No.18 Cooling System Concerns-Runs Cold
- No.19 Exhaust Smoke
- No.20 Fuel Odor (In Engine Compartment)
- No.21 Engine Noise
- No.22 Vibration Concerns (Engine)
- No.23 A/C Does Not Work Sufficiently
- No.24 A/C Always On/A/C Compressor Runs Continuously
- No.25 A/C Does Not Cut Off Under Wide Open Throttle Conditions
- No.26 Exhaust Sulphur Smell
- No.27 Fuel Refill Concerns
- No.28 Fuel Filling Shut Off Issues
- No.29 Spark Plug Condition
- Engine Control System Operation Inspection
- Input Signal System Investigation Procedure
- Notes
- Finding Unusual Signals
- Locating The Source Of Unusual Signals
- Variable Resistance Type 1 (APP Sensor, TP Sensor And EGR Boost Sensor)
- Investigate The Input Signal System For Variable Resistance Type 1
- Investigate The Standard Power Supply System For Variable Resistance Type 1
- Investigate The GND System For Variable Resistance Type 1
- Variable Resistance Type 2 (MAF Sensor)
- Investigate The GND System For Variable Resistance Type 2
- Investigate The Input Signal System For Variable Resistance Type 2
- Investigate The Electrical Supply System For Variable Resistance Type 2
- Thermistor Type (IAT Sensor And ECT Sensor)
- Investigate The Input Signal System For Thermistor Type
- Investigate The GND System For Thermistor Type
- VSS
- Main Relay Operation Inspection
- Intake Manifold Vacuum Inspection
- Electronic Throttle Control Inspection
- Fuel Injector Operation Inspection
- Fuel Cut Control System Inspection
- Fuel Pump Operation Inspection
- Fuel Pump Control System Inspection
- Ignition Timing Control Inspection
- Spark Test
- EGR Control System Inspection
- Purge Control System Inspection
- A/C Cut-off Control System Inspection
- Variable Air Duct (VAD) Control System Operation Inspection
- Evaporative System Test
- Main Fan/Additional Fan Motor Operation Inspection
- Variable Valve Timing Control System Operation Inspection
- Input Signal System Investigation Procedure