Engine Controls - Tests W/Codes

• Introduction
• Diagnosis & Testing
  • System Diagnosis
    • Notes
    • Hard Failures
    • Intermittent Failures
  • Service Precautions
  • Retrieving Codes
    • Notes
    • Using Scan Tester
    • Using Voltmeter
    • Using Malfunction Indicator Light (MIL)
  • Trouble Codes
  • Clearing Codes
  • ECM Location
• Terminal Identification
• Diagnostic Tests
  • Notes
  • Code 11: Heated Oxygen Sensor (Ho2S) (4-Wire Oxygen Sensor)
  • Code 12: Airflow Sensor
  • Code 13: Intake Air Temperature Sensor
  • Code 14: Throttle Position Sensor
  • Code 21: Engine Coolant Temperature (ECT) Sensor
  • Code 22: Crankshaft Position (CKP) Sensor
  • Code 23: Camshaft Position Sensor
  • Code 24: Vehicle Speed Sensor
  • Code 25: Barometric Pressure Sensor
  • Code 32: Map Sensor
  • Code 36: Ignition Timing Adjustment Signal
  • Code 41: Fuel Injector
  • Code 43: EGR Temperature Sensor
  • Code 55: Idle Air Control Position Sensor
  • Codes 59 & 69: Rear Oxygen Sensor (O2S)
• Summary