| DTC Strategy |
Case 1 |
- Engine speed is below the target while ISC torque is at the maximum during catalyst heating phase
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- Intake system for blockage
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| Case 2 |
- Engine speed is above the target while ISC torque is at the minimum during catalyst heating phase
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| Case 3 |
- Fuel cut-off during stand-still, idle condition and catalyst heating phase
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| Enable Conditions |
- Vehicle speed = 0 mph
- ECT at engine start > -10.5°C (13.1°F)
- Intake air temperature > -10.5°C (13.1°F)
- Accel. Pedal = 0%
- BARO > 74.5 kPa
- Catalyst heating = On (-10°C < ECT < 32°C)
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| Threshold value |
Case 1 |
- Desired engine speed - Engine speed > 100 RPM
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| Case 2 |
- Actual engine speed - Desired engine speed > 200 RPM
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| Case 3 |
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| Diagnostic Time |
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| MIL ON Condition |
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