Fuel System & Emissions Systems

• Special Tools
• General Troubleshooting Information
  • Intermittent Failures
  • Opens and Shorts
  • How to Use the HDS (Honda Diagnostic System) or an OBD II 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
  • ECM/PCM Reset (2002-2004 Models)
  • Reset the ECM/PCM with the OBD II scan tool or the HDS
  • Reset the ECM/PCM by removing the fuse
  • HDS Clear Command (2005-2006 Models)
  • Scan Tool Clear Command
  • DTC Clear (2005-2006 Models)
  • ECM/PCM Reset (2005-2006 Models)
  • CKP Pattern Clear/CKP Pattern Learn (2005-2006 Models)
  • How to End a Troubleshooting Session (required after any troubleshooting)
  • How to Troubleshoot Circuits at the ECM/PCM
  • ECM/PCM Updating and Substitution for Testing
  • How to Update the ECM/PCM
  • How to Substitute the ECM/PCM (2002-2004 Models)
  • How to Substitute the ECM/PCM (2005-2006 Models)
  • OBD Status (2005-2006 Models)
• DTC Troubleshooting Index
  • 2002-2004 Models
  • 2005-2006 Models
• Symptom Troubleshooting Index
  • 2002-2004 Models
  • 2005-2006 Models
• System Description
  • ECM/PCM Data (2002-2004 Models)
  • Electronic Control System
    • Notes
    • Self-diagnosis
    • Fail-safe Function
    • MIL Bulb Check and Readiness Code Condition
    • Self Shut Down (SSD) Mode
    • ECM/PCM Electrical Connections-2002-2004 Models
    • ECM/PCM Electrical Connections-2005-2006 Models
  • ECM/PCM Inputs and Outputs at Connector A (31P)-2002-2004 Models
  • ECM/PCM Inputs and Outputs at Connector B (24P)-2002-2004 Models
  • PCM Inputs and Outputs at Connector C (22P)* 1-2002-2004 Models
  • PCM Inputs and Outputs at Connector D (17P)* 1-2002-2004 Models
  • ECM/PCM Inputs and Outputs at Connector E (31P)-2002-2004 Models
  • ECM/PCM Inputs and Outputs at Connector A (31P)-2005-2006 Models
  • ECM/PCM Inputs and Outputs at Connector B (24P)-2005-2006 Models
  • PCM Inputs and Outputs at Connector C (22P)-2005-2006 Models
  • ECM/PCM Inputs and Outputs at Connector D (17P)-2005-2006 Models
  • ECM/PCM Inputs and Outputs at Connector E (31P)-2005-2006 Models
  • Vacuum Hose Routing
    • K20A2/K20Z1 engines
    • K20A3 engine
  • Vacuum Distribution
    • K20A2 engine
    • K20A3 engine-2002-2004 models
    • K20Z1 engine-2005-2006 models
    • K20A3 engine-2005-2006 models
  • PGM-FI System
    • Notes
    • Air Conditioning (A/C) Compressor Clutch Relay
    • Air Fuel Ratio (A/F) Sensor
    • Barometric Pressure (BARO) Sensor
    • Crankshaft Position (CKP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Ignition Timing Control
    • Injector Timing and Duration
    • Intake Air Temperature (IAT) Sensor
    • Knock Sensor (KS)
    • Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
    • Manifold Absolute Pressure (MAP) Sensor
    • Secondary Heated Oxygen Sensor (Secondary HO2S)
    • Starting Control
    • Throttle Position (TP) Sensor
    • Camshaft Position (CMP) Sensor B
    • Vehicle Speed Sensor (VSS) (2002-2004 M/T models)
    • Input Shaft (Mainshaft) Speed Sensor
    • Output Shaft (Countershaft) Speed Sensor (2005-2006 M/T models)
  • VTEC/VTC
    • Notes
    • VTC System
    • VTEC System
    • System Diagram
    • Camshaft Position (CMP) Sensor A
  • Idle Control System
    • Notes
    • Brake Pedal Position Switch
    • Idle Air Control (IAC) Valve
    • Power Steering Pressure (PSP) Switch
  • Fuel Supply System
    • Fuel Cut-off Control-2002-2004 Models
    • Fuel Cut-off Control-2005-2006 Models
    • Fuel Pump Control
    • PGM-FI Main Relay 1 and 2
  • Intake Air System
    • Notes
    • Intake Air Bypass Control Thermal Valve
    • Intake Manifold Tuning (IMT) (Intake Manifold Runner Control (IMRC)) Valve Position Sensor (K20A3 engine)
    • Throttle Body
  • Catalytic Converter System
    • Three Way Catalytic Converter (TWC)
  • Positive Crankcase Ventilation (PCV) System
  • Evaporative Emission (EVAP) Control System
    • Notes
    • EVAP Canister
    • EVAP Canister Purge Valve-2002-2004 Models
    • EVAP Canister Purge Valve-2005-2006 Models
    • Fuel Tank Pressure (FTP) Sensor
    • EVAP Two Way Valve and EVAP Bypass Solenoid Valve (2002-2004 Models)
    • EVAP Canister Vent Shut Valve
  • Fuel Cap Warning Message (2005-2006 Models)
    • Notes
    • First drive cycle
    • To make the message go off
    • Second drive cycle
    • Third drive cycle
  • Idle Control System Diagram
  • Intake Air System Diagram
  • Intake Manifold Tuning (IMT) (Intake Manifold Runner Control (IMRC)) System (K20A3 engine)
  • Evaporative Emission (EVAP) Control Diagram-2002-2004 Models
  • Evaporative Emission (EVAP) Control Diagram-2005-2006 Models
    • Notes
    • ECM/PCM Circuit Diagram-2002-2004 Models
    • ECM/PCM Circuit Diagram-2005-2006 Models
• How to Set Readiness Codes
  • Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
    • Notes
    • 2005-2006 Models
  • Catalytic Converter Monitor and Readiness Code
    • Notes
    • Enable Criteria
  • Procedure
    • When the HDS is used (2002-2006 Models)
    • When a scan tool is used (2002-2004 Models)
    • Evaporative Emission (EVAP) Control System Monitor and Readiness code
    • Enable Criteria
    • Air Fuel Ratio (A/F) Sensor Monitor and Readiness Code
    • Air Fuel Ratio (A/F) Sensor Heater Monitor Readiness Code
    • Notes
    • Misfire Monitor and Readiness Code
    • Fuel System Monitor and Readiness Code
    • Comprehensive Component Monitor and Readiness Code