System/Component Tests

• Introduction
• Engine Sensors & Switches
  • Notes
  • Airflow Meter
  • Coolant Temperature Sensor
  • Crankshaft Angle Sensor
    • Notes
    • Crank Angle Sensor Table
  • Cylinder Head Temperature Sensor (Pickup & Pathfinder V6)
  • Electronic Control Unit Power & Ground Signals
  • Exhaust Gas (Oxygen) Sensor
  • Exhaust Temperature Sensor (CALIFORNIA Models Only)
  • Idle Switch
  • Neutral Inhibitor Switch
  • Power Steering Oil Pressure Switch
  • Throttle Position Sensor (TPS) & Idle Switch
  • Vehicle Speed Sensor
• Relays & Solenoids
  • Relays
    • Notes
    • All Relays (Except Safety Relay)
    • Safety Relay
  • Solenoids
    • Air Injection Solenoid Valve
    • EGR Control Solenoid
    • Fuel Injector Solenoid
    • Fuel Pressure Regulator Solenoid
    • Idle-Up Solenoid
    • Power Valve Control Solenoid
    • Purge Valve Solenoid
    • Swirl Control Valve Solenoid
• Fuel System
  • Fuel Delivery System
    • Fuel Pressure
    • Fuel Pressure Regulator (SFI)
    • Fuel Pressure Regulator Solenoid
    • Fuel Pump
    • Fuel Pump Relay
    • Start Signal
  • Fuel Control System
    • Feedback System
  • Led Feedback Table
  • Fuel Injector
    • Diagnosis
    • Injector Resistance
    • Start Signal
• Idle Speed System
  • Air Regulator
  • Auxiliary Air Control (AAC) Solenoid/Valve
  • Idle-Up Solenoid
  • Start Signal
• Ignition System
  • Ignition System
    • Notes
    • Start Signal
  • Ignition Timing Control System
    • Timing Advance System
• Emission Systems & Sub-Systems
  • Air Injection
    • Anti-Backfire (AB) Valve (Pathfinder & Pickup)
    • Air Injection Valve
    • Air Injection Control Valve Solenoid
• ATC System
  • Automatic Temperature Control System
    • Thermostatic Air Cleaner Functional Check
    • Vacuum Motor
    • Temperature Sensor
• Canister Purge System
  • Fuel Tank & Vapor Vent Line
  • Carbon Canister
  • Fuel Check Valve
  • Purge Valve Solenoid (3-Port)
  • Purge Valve Solenoid (2-Port)
  • Vacuum Relief Filler Cap
• Dual Spark Plug System
  • Plug Switching Control
• EFE System
  • Early Fuel Evaporation (EFE)
    • Mixture Heater (Pathfinder & Pickup)
    • Mixture Heater Relay (Pathfinder & Pickup)
• EGR System
  • Exhaust Gas RECIRCULATION (EGR)
    • EGR Backpressure Transducer
    • EGR Valve
    • EGR Valve Solenoid (3-Port)
    • EGR Valve Solenoid (2-Port)
    • Exhaust Gas Temperature Sensor
    • Start Signal
• PCV System
  • Positive Crankcase Ventilation