System/Component Tests - EFI

• Introduction
• Variable Induction System Check
  • 2WD (4A-GE)
• Airflow Meter/Sensor Test
• 4WD Air Temp Sensor Test
• Coolant Temp Sensor Test
• EGR Gas Temp Sensor Test
• Neutral/Start Switch Check
• O2 Sensor FDBK Test
  • Oxygen (O2) Sensor Feedback Voltage Test
• Sub-Oxygen Sensor Test
• O2 Sensor Heater Test
  • Oxygen (O2) Sensor Heater Test
    • Notes
    • Pick-Up Coils
• TPS Check
  • Throttle Position Sensor (TPS) Check
• Map Sensor Test (4WD)
  • Manifold Absolute Pressure (Map) Sensor - (4WD 4A-FE)
• VSS Test (Analog Type)
  • Vehicle Speed Sensor (VSS) - Analog Type
• Circuit Opening Relay Check
• EFI Main Relay Test
• Fuel Delivery Check
• Fuel Injector Check
• Pressure-Up System (2WD)
  • Fuel Pressure-Up System - 2WD (4A-GE)
• Fuel-Cut System Test
  • Deceleration Fuel-Cut System
• Cold Start Injector Test
• Cold INJ Time Switch Test
  • Cold Start Injector Time Switch Test
• Auxiliary Air Valve Test
  • Auxiliary Air Valve System Test
• Idle-Up System Tests
  • Idle-Up System Test - 4WD (4A-FE)
  • Idle-Up System Test - 2WD (4A-GE)
• Ignition System Codes
  • Ignition System Diagnostic Code Tests
    • Notes
    • Code 12 (No RPM Signal)
    • Code 13 (No RPM Signal)
    • Code 14 (Ignition Signal Problem)
• Spark Test
• Ignition Coil Resistance Tests
  • Primary Coil Resistance Tests
  • Secondary Coil Resistance Tests
  • Pick-Up Coil Resistance Test
    • 4WD (4A-FE)
    • 2WD (4A-GE)
  • Pick-Up Coil Air Gap Check
• Dashpot Control System Test
• EGR Check
  • Exhaust Gas RECIRCULATION (EGR) Check
    • System Test
• EGR Vacuum Modulator Test
• BVSV Test (2WD)
  • Bi-Metallic Vacuum Switching Valve (BVSV) - 2WD (4A-GE)
  • Bi-Metallic Vacuum Switching Valve (BVSV) - 4WD (4A-FE)
• VSV Test (2WD)
  • Vacuum Switching Valve (VSV) (2WD 4A-GE)
• Fuel Evaporation Tests
  • Fuel Odor Or Gas Leaks
  • Fuel Tank Or Expansion Tank Deformed
  • Rough Engine Operation
  • Bi-Metallic Vacuum Switching Valve (BVSV)
  • Charcoal Canister
  • Maintenance