Engine Controls - System/Component Tests

• Introduction
• Engine Sensors & Switches
  • A/C On Switch System Test
  • Brake Switch
  • Coolant Temperature Sensor (Cts)
  • Knock Sensor
  • Manifold Absolute Pressure (Map) Sensor
  • Manifold Air Temperature (Mat) Sensor (2.5L Only)
  • Oxygen Sensor (O2)
  • P/N Switch
  • Power Steering Pressure Switch (2.5L Only)
  • Throttle Position Sensor (TPS)
  • Vehicle Speed Sensor (Pm Generator Type)
• Relays, Solenoids, Motors & Modules
  • A/C Relays
  • Cold Advance Relay (6.2L Diesel)
  • Downshift Control Relay (THM 400)
  • Fuel Pump Relay
  • Solenoids
    • Notes
    • Canister Purge Solenoid
  • Motors
    • Idle Air Control (IAC) Motor
• Fuel System (Gasoline)
  • Notes
  • Fuel Pressure Regulator (TBI)
  • Fuel Pump Relay
  • Fuel Pump Relay By-Pass Procedure
  • Fuel Injector(S)
  • Oxygen Sensor
• Idle Control System
  • Idle Air Control (IAC) Motor (2.5L)
• Fuel System (Diesel)
  • Notes
  • Normal Glow Plug Circuit Operation
  • Preliminary Glow Plug Diagnosis
  • Inhibit Switch (Black Cap)
• Glow Plug System Diagnosis
  • Electrical Check
  • No Start - Cold
• Diesel Cold Advance System Check
  • Notes
  • Cold Advance Relay
  • Glow Plug Controller
• Injection Pump Housing Leakage Test
• Injectors
  • Test Preparation
  • Opening Pressure Test
  • Leakage Test
  • Chatter Test
  • Spray Pattern Test
• Ignition System
  • Notes
  • Electronic Spark Control (ESC) Circuit (Except 2.5L)
  • Electronic Spark Timing (All Engines)
• Emission Systems & Sub-Systems (Gasoline)
  • Air Pump
  • Check Valve
  • Electronic Air Control (EAC) Solenoid
• Exhaust Gas RECIRCULATION (EGR)
  • System Test
  • EGR Control Solenoid
  • Negative BACKPRESSURE EGR Valve
• Fuel Evaporation Control
  • Vapor Canister
  • Fuel Tank Pressure Control Valve
  • PCV
  • Checking PCV Valve Function
• Emission Systems & Sub-Systems (Diesel)
  • Crankcase Depression Regulator (CDR)
  • EGR Valve Check
  • Exhaust Pressure Regulation (EPR) System
  • Vacuum Pump
• Miscellaneous ECM Controls
  • Notes
  • A/C Clutch Relay
  • Cooling Fan (3.1L Only)
  • Cooling Fan Relay
  • Cooling Fan Motor
• Transmission
  • Torque Converter Clutch (TCC) Solenoid
  • Converter Lock-Up Signal At Transmission
  • Converter Lock-Up Signal From ECM
  • Shift Light (Manual Transmission)