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General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
General Enable Conditions
  • Vehicle speed = 0
  • Coolant temperature > 70 °C (158 °F)
  • Intake air temperature > -7.5 °C (18.5 °F)
  • Altitude < 3000 m (9841 ft)
  • Idle status
  • Poor connection
  • Leak or clog in intake air system
  • Carbon pile
  • ISCA
  • ECM
Case 1 DTC Strategy
  • Rationality check, low (During catalyst heating)
Enable Conditions
  • Idle controller I part = 15.0%
  • Engine load < 35%
  • Catalyst heating is activated.
Threshold Value
  • Desired engine speed - Engine speed > 100 RPM
Diagnostic Time
  • 8 sec
Case 2 DTC Strategy
  • Rationality check, high (During catalyst heating)
Enable Conditions
  • Idle controller I part = -15.0%
  • Catalyst heating is activated.
Threshold Value
  • Desired engine speed - Engine speed < -200 RPM
  • Fuel cutoff ≥ 3 times
Diagnostic Time
  • 8 sec
MIL ON Condition
  • 2 driving cycle
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