| DTC Strategy |
Case1 |
- Actual idle engine speed is slow for catalyst heating
|
- Poor connector connection
- Intake and exhaust system blockage
- Vacuum leakage
- Throttle body
|
| Case2 |
- Actual idle engine speed is fast for catalyst heating
|
| Enable Conditions |
- Engine speed is higher than 768RPM
- Battery voltage is between 11 and 16V
- Activate catalyst heating
- Accelerate is below 1.1%
- Vehicle speed is below 1km/h (0.62MPH)
- No shift the gear
|
| Threshold Value |
Case1 |
- Difference between target engine speed and actual engine speed is below-150RPM
- Actual idle torque control is below -23Nm for 7s
|
| Case2 |
- Difference between actual engine speed and target engine speed is greater than 200RPM
- Actual idle torque control is below -30Nm for 7s
|
| Diagnostic Time |
|
| MIL ON Condition |
|