Engine Control System & Fuel System - 2.4L - Troubleshooting & Diagnosis

• Symptoms - Engine Controls
  • Diagnostic Instructions
  • Symptoms Description
  • Symptoms Definition
  • Symptoms Verification
    • Notes
    • Identifying Intermittent Conditions
  • Symptoms Testing
    • Backfire, Cuts Out/Misses, Detonation/Spark Knock, Dieseling/Run-On, Hard Start, Hesitation/Sag/Stumble, Lack of Power/Sluggishness/Sponginess, Poor Fuel Economy, Rough, Unstable, or Incorrect Idle and Stalling, or Surges/Chuggles
  • Additional Symptoms Tests
    • Hard Start
    • Hesitation, Sag, Stumble
    • Poor Fuel Economy
    • Detonaton/Spark Knock
    • Lack of Power, Hesitation, or Cut Out
    • Rough, Unstable, or Incorrect Idle and Stalling
    • Surges/Chuggles
• Poor Fuel Fill Quality
• Malfunction Indicator Lamp (MIL) Diagnosis
  • Diagnostic Instructions
  • Circuit/System Description
  • Reference Information
  • Circuit/System Verification
  • Circuit/System Testing
  • Repair Procedures
• Service Bay Test
  • Diagnostic Instructions
  • Description
  • Conditions for Running the Test
  • Test Procedure
• Engine Cranks but Does Not Run
  • Diagnostic Instructions
  • Circuit/System Description
  • Diagnostic Aids
  • Reference Information
  • Circuit/System Verification
• Fuel Pump Electrical Circuit Diagnosis
  • Diagnostic Instructions
  • Diagnostic Fault Information
  • Circuit/System Description
  • Diagnostic Aids
  • Reference Information
  • Circuit/System Verification
  • Circuit/System Testing
  • Component Testing
  • Repair Procedures
• Fuel System Diagnosis
  • Diagnostic Instructions
  • Circuit/System Description
  • Reference Information
  • Circuit/System Verification
  • Circuit/System Testing
  • Repair Procedures
• Fuel Injector Diagnosis (w/J39021 or w/Tech 2)
  • Diagnostic Instructions
  • Circuit/System Description
  • Diagnostic Aids
  • Reference Information
  • Component Testing
    • Fuel Injector Coil Test
    • Fuel Injector Balance Test - Fuel Pressure Test
    • Fuel Injector Balance Test with Special Tool
    • Fuel Injector Balance Test with Tech 2
    • Pressure Drop Calculation
  • Repair Procedures
• Fuel Injector Diagnosis (w/CH47976)
  • Diagnostic Instructions
  • Circuit/System Description
  • Reference Information
  • Component Testing
    • Fuel Injector Coil Test
    • AFIT Test Procedure
  • Repair Procedures
• Fuel Injector Circuit Diagnosis
  • Diagnostic Instructions
  • Diagnostic Fault Information
  • Circuit/System Description
  • Reference Information
  • Circuit/System Testing
  • Repair Procedures
• Fuel Tank Leak Test
  • Diagnostic Instructions
  • Test Description
  • Diagnostic Aids
  • Reference Information
  • System Verification
  • System Testing
  • Repair Procedures
• Alcohol/Contaminants-in-Fuel Diagnosis
  • Diagnostic Instructions
  • Test Description
  • Reference Information
  • System Verification
  • Alcohol in Fuel Testing with Special Tool
  • Alcohol in Fuel Testing without Special Tool
  • Particulate Contaminants in Fuel Testing Procedure
  • Repair Procedures
• Electronic Ignition (EI) System Diagnosis
  • Diagnostic Instructions
  • Circuit/System Description
  • Diagnostic Aids
  • Reference Information
  • Circuit/System Verification
  • Circuit/System Testing
  • Component Testing
  • Repair Procedures
• Evaporative Emission System Diagnosis
  • Operating Instructions for the Evaporative Emission System Tester (EEST)
    • Vehicle Setup
  • Flowmeter Test - Leak Detection
  • Smoke Procedure - Locate the Leak
  • Temperature Variation Instructions
    • The Concern
    • For Example
    • The Solution
• Inspection/Maintenance (I/M) System Check
  • Diagnostic Instructions
  • Circuit/System Description
  • Conditions for Updating the I/M System Status
  • Monitored Emission Control Systems
  • Circuit/System Verification
  • Circuit/System Testing
• Inspection/Maintenance (I/M) Complete System Set Procedure
  • Diagnostic Instructions
  • Circuit/System Description
  • I/M Data List
  • Conditions for Meeting a Cold Start
  • Circuit/System Verification
  • Inspection/Maintenance (I/M) System Set Procedure
• Inspection/Maintenance (I/M) System DTC Table