Engine Controls - Tests W/Codes

• Introduction
• Self-Diagnostic System
  • Notes
  • Consult Tester
  • Hard Failures
  • Intermittent Failures
  • Malfunction Indicator Light (Mil)
  • Diagnostic Modes
    • Notes
    • Mode I
    • Mode II
  • ECM Location
  • Entering Self-Diagnostics
  • Retrieving Codes
  • Clearing Codes
    • Notes
    • Memory Erase
• Final Check
  • Final Check For All Code Charts
• Summary
• Trouble Code Definition
• Diagnostic Trouble Code (DTC) Testing (G20)
  • Notes
  • ECM Harness Connector
  • DTC 11: Crankshaft Position (CKP) Sensor
  • DTC 12: Mass Airflow (MAF) Sensor
  • DTC 13: Engine Coolant Temperature (ECT) Sensor
  • DTC 14: Vehicle Speed Sensor (VSS)
  • DTC 21: Ignition Signal
  • DTC 31: ECM
  • DTC 32: EGR Function (CALIF.)
  • DTC 33: Heated Oxygen Sensor (Ho2S)
  • DTC 34: Knock Sensor
  • DTC 35: EGR Temperature Sensor (CALIF.)
  • DTC 43: Throttle Position Sensor (TPS)
  • DTC 45: Injector Leak (CALIF.)
  • DTC 54: A/T Control (A/T Serial No. 450021 & Later)
    • Check Input Signal Circuit