Diesel CEC System - W/External EGR

• Description
• Operation
  • System Operation
  • ECM Table Operation
  • ECM Input Sensors Operation
    • A/C On Signal (4.3L V6 Only)
    • Brake Switch Signal (5.7L V8 Only)
    • Engine Coolant Temperature (ECT) Sensor
    • Engine Rpm Signal
    • Manifold Absolute Pressure (MAP) Sensor
    • Metering Valve Sensor (MVS)
    • Vehicle Speed Sensor (VSS)
    • 3rd & 4th Gear Switch (If Equipped)
  • ECM Output Emission Control Components Operation
    • Altitude Fuel Limiter (AFL)
    • EGR Solenoid
    • EPR Solenoid & Valve
    • Fast Idle Solenoid
    • Housing Pressure Altitude Advance (HPAA) Solenoid
    • Housing Pressure Cold Advance (HPCA) Solenoid
    • TCC Solenoid
  • Electronic EGR Control Operation
  • Diagnostic System Operation
    • Notes
    • Check Engine Light (CEL)
    • Reading Trouble Codes
    • Diagnostic Mode
• Removal & Installation
  • Removal & Installation Precaution
  • ECM
    • Notes
    • Removal
    • Installation
  • Prom
• Basic Diagnostic Procedure
• Trouble Code Identification
• Component Testing
  • EGR Valve
  • EPR Valve
  • QVR Valve
• Trouble Shooting
  • Intermittent Check Engine Light
• Diagnostic Circuit Check
• Chart A1, "Check Engine" Light (CEL) Malfunction
• Code 12, No Rpm Signal-Vehicle Standing
• Code 14, Cts Circuit - Voltage Low
  • Coolant Temperature Sensor (Cts) Circuit - Voltage Low
• Code 15, Cts Circuit - Voltage High
  • Coolant Temperature Sensor (Cts) Circuit - Voltage High
• Code 21, Metering Valve Sensor (MVS)
• Code 22, Metering Valve Sensor (MVS)
• Code 24, Vehicle Speed Sensor (VSS)
• Code 41, No Rpm Signal - Vehicle In Motion
• Code 51, Prom Error
• Code 53, EGR Control Error
• Code 55, 5 Volt Reference Circuit
• Chart C2, Map Sensor Check
• Chart C3, EGR Solenoid Check
• Chart C4, EPR Solenoid Check
  • Exhaust Pressure Regulator (EPR) Solenoid Check
• Chart C5, Vacuum Control Check
• Chart C6, HPCA Electrical Check
  • Housing Pressure Cold Advance (HPCA) Check
• Chart C7, HPAA/AFL Electrical Check
  • Housing Pressure Altitude Advance (HPAA) Solenoid
  • Altitude Fuel Limiter (AFL)
  • HPAA/AFL Electrical Check
• Chart C8-1,TCC Check
• Chart C8-2, TCC Check (Cont.)
• Chart C9, Fast Idle Solenoid Electrical Check
• Wiring Diagram