Engine Controls - System/Component Tests

• Introduction
• Air Induction Systems
  • Supercharger (C-18)
    • Boost Control Solenoid (VIN 1)
• Computerized Engine Controls
  • Control Unit
    • Ground Circuits
    • Power Circuits
• Engine Sensors & Switches
  • Notes
  • A/C On (A/C Request) Switch Test
  • A/C Pressure Sensor
  • A/C Pressure Switch
  • Brake Switch
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
  • Engine Coolant Temperature (ECT) Sensor
  • Intake Air Temperature (IAT) Sensor
  • Knock Sensor (KS)
  • Manifold Absolute Pressure (Map) Sensor (C-1)
  • Mass Airflow (MAF) Sensor
  • Manifold Air Temperature (Mat) Sensor
  • Oxygen Sensor (O2S)
  • Park/Neutral Position (PNP) Switch (C-1)
  • Power Steering Pressure (PSP) Switch
  • Throttle Position (TP) Sensor
  • Vehicle Speed Sensor (Pm Generator Type)
  • Vehicle Speed Sensor (Led Type)
• Motors, Relays & Solenoids
  • Motors
    • Idle Air Control (IAC) Motor & Idle Speed Control (ISC) Motor
  • Relays
    • A/C Clutch Relay
    • Electric AIR Pump Relay
    • Fuel Pump Relay
  • Solenoids
    • Notes
    • AIR By-Pass Valve Solenoid
    • Canister Purge Solenoid
    • Cruise Control Vent Solenoid (4.0L)
    • EGR Control Solenoid
• Fuel System
  • Fuel Delivery
    • Notes
    • Fuel Pressure Regulator
    • Fuel Pump Relay (A-5)
    • Fuel Pump Relay By-Pass Procedure
    • Oil Pressure Switch Fuel Pump Back-Up
  • Fuel Control
    • Fuel Injector(s)
    • Injector Balance Test (C-2)
    • Fuel Injector Leak Test
    • Oxygen Sensor
• Idle Control System (C-2)
  • Idle Air Control (IAC) Motor
• Ignition System
  • Notes
  • Timing Control Systems
    • Ignition Control (IC) Timing Advance System
    • Knock Sensor (KS) System Without KS Controller (C-5)
    • Knock Sensor (KS) System With KS Controller (C-5)
• Emission Systems & Sub-Systems
  • Air Injection (C-6)
    • AIR Pump (Belt-Driven)
    • Check Valve
  • Exhaust Gas RECIRCULATION (C-7)
    • Notes
    • System Test (Vacuum Operated)
    • EGR Control Solenoid (Normally Closed)
    • EGR Control Solenoid (Normally Open)
    • Linear EGR Valve
    • Negative Backpressure EGR Valve
    • Positive Backpressure EGR Valve
  • Fuel Evaporation Control (C-3)
    • Notes
    • Canister Purge Solenoid (Normally Closed)
    • Canister Purge Solenoid (Normally Open)
    • Fuel Tank Pressure Control Valve
  • Positive Crankcase Ventilation (PCV)
    • Required Service
    • Checking PCV Valve Function
• Miscellaneous Controls
  • Notes
  • Hot Light Or Coolant Temperature Light
  • Transmission (C-8)
    • Notes
    • Converter Clutch Solenoid
    • Converter Lock-Up Signal At Transmission
    • Converter Lock-Up Signal From PCM
  • A/C Clutch (C-10) & Electric Cooling Fan (C-12)
    • Notes
    • A/C Clutch Relay
    • Cooling Fan System & Quad-Driver Check
    • Cooling Fan Relay
    • Cooling Fan Motor
• Diagnostic Charts
  • Chart C-12A, Cooling Fan Circuit Diagnosis (1 Of 4)
    • Notes
    • Diagnostic Aids
  • Chart C-12B, Cooling Fan On At All Times (2 Of 4)
  • Chart C-12C, Cooling Fan No Low Speed Fan (3 Of 4)
  • Chart C-12D, Cooling Fan No High Speed Fan (4 Of 4)
  • Chart C-10A, A/C Compressor Clutch Circuit Diagnosis (1 Of 3) Manual A/C-Heater
  • Chart C-10A, A/C Compressor Clutch Circuit Diagnosis (2 Of 3) Manual A/C-Heater
  • Chart C-10A, A/C Compressor Clutch Circuit Diagnosis (3 Of 3) Manual A/C-Heater
  • Chart C-10B, A/C Compressor Clutch Circuit Diagnosis (1 Of 3) Automatic A/C-Heater
  • Chart C-10B, A/C Compressor Clutch Circuit Diagnosis (2 Of 3) Automatic A/C-Heater
  • Chart C-10B, A/C Compressor Clutch Circuit Diagnosis (3 Of 3) Automatic A/C-Heater
• Component Locations
• Wiring Diagrams