Failure Management

When main sensor malfunctions are detected, ECM/PCM will enter fail-safe mode. Default values will be substituted in ECM/PCM calculations for faulty sensor as follows:

• Barometric Pressure (BARO) Sensor
  
  Sets At A Default Of 30 In. Hg (101 kPa)
• Camshaft Position (CMP) Sensor
  
  ECM/PCM Will Command Injectors To Inject Fuel Into All Cylinders Simultaneously
• Communication Line With Transaxle Control CPU
  
  No Ignition Timing Retard Control Achieved When Transaxle Speeds Change
• Engine Coolant Temperature (ECT) Sensor
  
  Sets At A Default Of 176°F (80°C)
• Generator FR Terminal
  
  Does Not Restrict Generator Output With Respect To Electrical Load
• Heated Oxygen Sensor (HO2S) Front
  
  Air/Fuel Ration Closed Loop Control Is Not Performed
• Heated Oxygen Sensor (HO2S) Rear
  
  Performs Closed Loop Control Of Air/Fuel Ration By Using Front HO2S Signals
• Intake Air Temperature (IAT) Sensor
  
  Sets At A Default Of 77°F (25°C)
• Knock Sensor
  
  Switches Ignition Timing From High Octane Fuel To Ignition Timing For Standard Octane Fuel
• Misfire Detection
  
  ECM/PCM Stops Supplying Fuel To The Cylinder With The Highest Misfiring Rate If A Misfire That Could Damage The Catalytic Converter Is Detected
• Throttle Position (TP) Sensor
  
  Fuel Injection Amount Will Not Increase During Acceleration Due To Unreliable Tp Sensor Signal
• Volume Airflow (VAF) Sensor
  
  ECM/PCM Will Use Crankshaft Position (CKP) Sensor Signal (Engine Speed) & Throttle Position (TP) Sensor Signal To Determine Injector Drive Time & Basic Ignition Timing For The Pre-Set Mapping. Idle Air Control (IAC) Motor Remains In A Fixed Position