Fuel And Emissions Systems

• Special Tools
• General Troubleshooting Information
  • Intermittent Failures
  • Service Information
  • Opens and Shorts
  • How to Use the HDS (Honda Diagnostic System)
    • If the MIL (malfunction indicator lamp) has come on
  • HDS Clear Command
  • Scan Tool Clear Command
  • DTC Clear
  • PCM Reset
  • Crank (CKP) Pattern Clear/Crank (CKP) Pattern Learn
    • Clear/Learn Procedure (with the HDS)
    • Learn Procedure (without the HDS)
  • How to End a Troubleshooting Session (required after any troubleshooting)
  • How to Troubleshoot Circuits at the PCM Connectors
  • Substituting the PCM
  • OBD Status
  • DTC Troubleshooting Index
• Symptom Troubleshooting Index
• System Description
  • Electronic Control System
    • Notes
    • Self-diagnosis
    • Fail-safe Function
    • MIL Bulb Check and Readiness Code Condition
    • Self Shut Down (SSD) Mode
    • PCM Electrical Connections
  • Vacuum/Pressure Hose Routing
    • Notes
    • Front View
  • Vacuum/Pressure Distribution
  • PCM Inputs and Outputs at Connector A (□) (44P)
    • Overview
    • Notes
    • PCM Inputs and Outputs at Connector A (□) (44P)
  • PCM Inputs and Outputs at Connector B ( ) (44P)
    • Overview
    • Notes
    • PCM Inputs and Outputs at Connector B ( ) (44P)
  • PCM Inputs and Outputs at Connector C (◦) (44P)
  • PGM-FI System
    • Notes
    • Air Conditioning (A/C) Compressor Clutch Relay
    • Air Fuel Ratio (A/F) Sensor
    • Barometric Pressure (BARO) Sensor
    • Camshaft Position (CMP) Sensor B
    • Crankshaft Position (CKP) Sensor
    • Engine Coolant Temperature (ECT) Sensors 1 and 2
    • ECT sensor 1
    • ECT sensor 2
    • Ignition Timing Control
    • Injector Timing and Duration
    • Knock Sensor
    • Manifold Absolute Pressure (MAP) Sensor
    • Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
    • Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT) Sensor 1
    • Intake Air Temperature (IAT) Sensor 2
    • Secondary Heated Oxygen Sensor (Secondary HO2S)
  • Electronic Throttle Control System
    • Notes
    • Accelerator Pedal Position (APP) Sensor
    • Throttle Body
    • Idle Control System
    • Brake Pedal Position Switch
    • Power Steering Pressure (PSP) Switch
  • Fuel Supply System
    • Fuel Cutoff Control
    • Fuel Pump Control
    • PGM-FI Main Relay 1 and 2
    • Transfer Fuel Pump
  • VTEC/VTC
    • Notes
    • VTC System
    • VTEC System
    • System Diagram
    • Camshaft Position (CMP) Sensor A
  • Catalytic Converter System
    • Warm Up Three Way Catalytic Converter (WU-TWC) and Three Way Catalytic Converter (TWC)
    • WU-TWC (Attached To The Turbocharger)
  • Positive Crankcase Ventilation (PCV) System
  • Evaporative Emission (EVAP) Control System
    • Notes
    • EVAP Canister
    • EVAP Canister Purge Valve
    • Fuel Tank Pressure (FTP) Sensor
    • EVAP Canister Vent Shut Valve
  • Fuel Cap Warning Message
    • Notes
    • First drive cycle
    • Multi-information display model
    • Information display model
  • To make the message go off (With the HDS)
    • Procedure
  • To make the message go off (Without the HDS)
    • Procedure
  • Electronic Throttle Control System Diagram
  • Evaporative Emissions (EVAP) Control System Diagram
    • Notes
    • Purge to the throttle body
    • Purge to the intake air duct (turbocharger inlet pipe)
    • Purge to the both intake air duct (turbocharger inlet pipe) and the throttle body
  • Turbocharger Control System
    • Notes
    • Turbocharger Boost Sensor
    • Turbocharger Wastegate Control Solenoid Valve
    • Turbocharger Bypass Control Solenoid Valve
    • Turbocharger Boost Control Solenoid Valve
  • Turbocharger Control System Diagram
  • Turbocharger Wastegate Control System
    • Notes
    • Condition A (maximum duty):
    • Condition B (minimum duty):
  • Turbocharger Bypass Control System
    • Notes
    • Condition A (Solenoid Valve ON):
    • Condition B (Solenoid Valve OFF):
  • Turbocharger Boost Control System
    • Notes
    • Condition A (maximum duty):
    • Condition B (minimum duty):
    • PCM Circuit Diagram
  • How to Set Readiness Codes
    • Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
  • Catalytic Converter Monitor and Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • Evaporative Emission (EVAP) Control System Monitor and Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • Air Fuel Ratio (A/F) Sensor Monitor and Readiness Code
    • Notes
    • Enable Criteria
    • Procedure
  • Air Fuel Ratio (A/F) Sensor Heater Monitor Readiness Code
    • Notes
    • Procedure
  • Misfire Monitor and Readiness Code
  • Fuel System Monitor and Readiness Code
  • Comprehensive Component Monitor and Readiness Code