Fuel System & Emission Systems (4-CYL)

• Special Tools
• General Troubleshooting Information
  • Intermittent Failures
  • Opens and Shorts
  • How to Use the PGM Tester or a Scan Tool
  • How to Reset the ECM/PCM
  • How to End a Troubleshooting Session (required after any troubleshooting)
  • How to Remove the ECM/PCM for Testing
  • How to Troubleshoot Circuits at the ECM/PCM
  • How to substitute the ECM/PCM for testing purposes
• DTC Troubleshooting Index
• Symptom Troubleshooting Index
• System Descriptions
  • Electronic Control System
    • Notes
    • Fail-safe Function
    • Back-up Function
    • Self-diagnosis
    • Two Driving Cycle Detection Method
  • ECM/PCM Data
  • ECM/PCM Electrical Connections
  • ECM/PCM Inputs & Outputs at Connector A (32P)
  • ECM/PCM Inputs & Outputs at Connector B (25P)
  • ECM/PCM Inputs & Outputs at connector C (31P)
  • ECM/PCM Inputs & Outputs at Connector D (16P)
  • Vacuum Hose Routing: '98-00 models
  • Vacuum Hose Routing: '01-02 models
  • Vacuum Distribution
  • PGM-FI System
    • Notes
    • Air conditioning (A/C) Switch
    • A/C Compressor Clutch Relay
    • Air Fuel Ratio (A/F) Sensor (F23A4 engine)
    • Alternator Control
    • Barometric Pressure (BARO) Sensor
    • Crankshaft Position (CKP) & Top Dead Center (TDC) Sensors
    • Cylinder Position (CYP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Intake Air Temperature (IAT) Sensor
    • Ignition Timing Control
    • Injector Timing and Duration
    • Knock Sensor (F23A1, F23A4 engine)
    • Manifold Absolute Pressure (MAP) Sensor
    • Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes) - F23A4 engine
    • Primary Heated Oxygen sensor (Primary HO2S)
    • Secondary Heated Oxygen sensor (Secondary HO2S)
    • Throttle Position (TP) Sensor
    • Vehicle Speed Sensor (VSS) (M/T)
    • Intake Air System
    • Throttle Body
  • Idle Control System
    • Notes
    • Idle Air Control (IAC) Valve
    • Power Steering Pressure (PSP) Switch
    • Starter (Ignition) Switch
    • Brake Pedal Position Switch
  • Fuel Supply System
    • Fuel Pump Control
    • Fuel Cut-off Control
    • PGM-FI Main Relay
  • Exhaust Gas Recirculation (EGR) System
    • Notes
    • EGR Valve
  • Positive Crankcase Ventilation (PCV) System
  • Evaporative Emission (EVAP) Control System
    • Notes
    • EVAP Canister
    • EVAP Canister Purge Valve
    • Fuel Tank Pressure (FTP) Sensor
  • Catalytic Converter System
    • Three Way Catalytic Converter (TWC)
  • Intake Air System Diagram
  • Idle Control System Diagram
  • Exhaust Gas Recirculation (EGR) System Diagram
  • Evaporative Emission (EVAP) Control Diagram
• Circuit Diagram
  • ECM/PCM Circuit Diagram
• How to Set Readiness Codes
  • Malfunction Indicator Lamp (MIL) indication (In relation to Readiness Codes) - F23A4 engine
  • Air Fuel Ratio (A/F) Sensor Monitor Code
  • Catalytic Converter Monitor Code
  • EGR Monitor Code
  • EVAP Leak Monitor Code
  • HO2S Monitor Code
  • HO2S Heater Monitor Code