Conditions For Setting DTC

Following conditions must be met for DTC diagnostic test to run:

• Engine is running.
• No Throttle Position (TP) sensor and Manifold Absolute Pressure (MAP) sensor DTCs are set.
• No MAF frequency DTCs are set.
• System voltage is between 11.5 and 16.0 volts.
• The barometric pressure has been measured within the last 3 minutes.
• Engine speed is between 650 RPM and 4000 RPM.
• Engine coolant temperature is above 86°F (30°C).
• No change in A/C clutch or TCC status.
• Throttle position is steady, changing less than 5%.
• Manifold Absolute Pressure (MAP) value is steady, changing less than 5kPa.
• Exhaust Gas Recirculation (EGR) flow rate is steady, changing less than 5 percent.
• Idle air flow rate is steady, changing less than 5 percent.
• The absolute value of the difference for actual Mass Air Flow (MAF) value and expected MAF value is more than high threshold value, or less than low threshold value for 5 seconds.