Engine Controls - Tests W/Codes - Non-Supercharged

• Introduction
• Self-Diagnostic System
  • Hard Failures
  • Intermittent Failures
  • Retrieving Trouble Codes
    • Notes
    • Toyota Scan Tester
    • Normal Mode
  • Notes On Trouble Codes
  • Clearing Trouble Codes
  • Trouble Code Detection Driving Pattern Tests
  • ECM Location
• Trouble Code Diagnostic Hints
• Trouble Code Identification
• Trouble Code Charts
  • ECM Terminal Identification
  • Diagnostic Circuit Check
  • Test No. 1 ECM (+B) Circuit Check
  • DTC 12, 13 - Rpm Signal
  • DTC 14: Ignition Signal
  • DTC 21, 27: Oxygen Sensor Signal
  • DTC 22: Engine Coolant Temperature Sensor Signal
  • DTC 24: Intake Air Temperature Signal
  • DTC 25, 26: Lean Or Rich Air/Fuel Mixture
    • Probable Causes
    • Procedures
  • DTC 31, 32: Airflow Meter Signal
  • DTC 41: Throttle Position Sensor Signal
  • DTC 42: Vehicle Speed Sensor Signal
    • Probable Causes
    • Procedures
  • DTC 43: Starter Signal
  • DTC 51: Switch Condition Signal
    • Probable Causes
    • Procedures
  • DTC 52: Knock Sensor Signal
    • Probable Causes
    • Procedures
  • DTC 53: Knock Sensor Control Signal - ECM
    • Probable Cause
    • Procedures
  • DTC 71: EGR System Malfunction
• Summary