DTC P0112: Intake Air Temperature Circuit Low Input

Detect the open or short circuit of intake air temperature sensor.

Judge NG when out of the standard value.

Always perform the diagnosis continuously.

• Abnormality Judgment 

  Judge NG when the continuous time of completing the malfunction criteria below becomes more than 0.5 seconds.

  Judgment Value 

  JUDGMENT VALUE CHART
  
  

  Malfunction Criteria	Threshold Value
  Output voltage Ignition switch	< 0.165 V ON

  Time Needed for Diagnosis:  0.5 seconds

  Malfunction Indicator Light Illumination:  Illuminates as soon as the malfunction occurs.

• Normality Judgment 

  Judge OK and clear the NG when the malfunction criteria below are completed.

  Judgment Value 

  JUDGMENT VALUE CHART
  
  

  Malfunction Criteria	Threshold Value
  Output voltage	"GREATER THAN EQUAL TO" .165 V
  Ignition switch	ON

• When the OK idling cycle was completed 40 times in a row
• When "Clear Memory" was performed

• When the OK driving cycle was completed 3 times in a row
• When "Clear Memory" was performed

Intake air temperature sensor process: Intake air temperature is fixed at 20°C (68°F).

Memorize the freeze frame data. (For test mode $02)