Fuel & Emissions System

• Special Tools
• General Troubleshooting Information
  • Intermittent Failures
  • Opens & Shorts
  • How To Use The Honda Diagnostic System (HDS) Or A Scan Tool
    • If The MIL (Malfunction Indicator Lamp) Has Come On
    • If The MIL Did Not Stay On
    • If You Can't Duplicate The DTC
  • How To Reset The PCM
  • How To End A Troubleshooting Session (Required After Any Troubleshooting)
  • How To Remove The PCM For Testing
  • How To Troubleshoot Circuits At The PCM
    • Special Tools Required
  • How To Substitute The PCM For Testing
• 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
  • PCM Data
  • PCM Inputs & Outputs At Connector A (32P)
  • PCM Inputs & Outputs At Connector B (25P)
  • PCM Inputs & Outputs At Connector C (31P)
  • PCM Inputs & Outputs At Connector D (16P)
  • PCM Inputs & Outputs At Connector E (20P)
  • Vacuum Hose Routing
  • Vacuum Distribution
  • PGM-FI System
    • Notes
    • Alternator Control
    • A/C Compressor Clutch Relay
    • A/C Switch
    • Barometric Pressure (BARO) Sensor
    • Camshaft Position (CMP) Sensor
    • Crankshaft Position (CKP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Ignition Timing Control
    • Injector Timing & Duration
    • Intake Air Temperature (IAT) Sensor
    • Knock Sensor
    • Malfunction Indicator Lamp (MIL) Indication (In relation To Readiness Codes)
    • Manifold Absolute Pressure (MAP) Sensor
    • Primary Heated Oxygen Sensor (Primary HO2S)
    • Secondary Heated Oxygen Sensor (Secondary HO2S)
    • Starting Control
    • Throttle Position (TP) Sensor
  • Idle Control System
    • Notes
    • Brake Pedal Position Switch
    • Idle Air Control (IAC) Valve
    • Power Steering Pressure (PSP) Switch
    • Starter (Ignition) Switch
  • Fuel Supply System
    • Fuel Cut-Off Control
    • Fuel Pump Control
    • PGM-FI Main Relay
    • The Fuel Gauge Sending Unit
  • Intake Air System
    • Notes
    • Intake Air Bypass Control System
    • Throttle Body
  • Catalytic Converter System
    • Three Way Catalytic Converter (TWC)
  • 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
    • EVAP Two Way Valve & EVAP Bypass Solenoid Valve
  • Idle Control System Diagram
  • Intake Air System Diagram
  • Exhaust Gas Recirculation (EGR) System Diagram
  • Evaporative Emission (EVAP) Control Diagram
    • Notes
    • PCM Circuit Diagrams
• How To Set Readiness Codes
  • Malfunction Indicator Lamp (MIL) Indication (In Relation To Readiness Codes)
  • Catalytic Converter Monitor & Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • Evaporative Emissions (EVAP) Control System Monitor & Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • HO2S Monitor & Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • HO2S Heater Monitor Readiness Code
    • Notes
    • Procedure
  • Misfire Monitor & Readiness Code
  • Fuel System Monitor & Readiness Code
  • Comprehensive Component Monitor & Readiness Code
  • EGR Monitor & Readiness Code
    • Notes
    • Enable Criteria
    • Procedure