| DTC Strategy |
- Calculation of Engine Roughness
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- Poor connector connection
- Ignition system
- Fuel system
- Intake/exhaust air system
- Ignition timing
- Injector
- Bad quality fuel
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| Enable Conditions |
Case 1 |
- Engine speed is at between 510RPM and 4500RPM
- Engine Torque is greater than Zero torque
- Time after engine start is greater than 25s
- If ECT@start is less than -7°C (19.4°F)
- Then ECT is greater than 21°C (69.8°F)
- Else ECT is greater than -7°C (19.4°F)
- No rough road detection
- Remark: (Rough Road Condition Check) Wheel acceleration is less than 30m/sec2 (determined by vehicle speed sensor)
|
| Case 2 |
- Engine speed is at between 510RPM and 4500RPM
- Engine Torque is greater than Zero torque
- If ECT@start is less than -7°C (19.4°F)
- Then ECT is greater than 21°C (69.8°F)
- Else ECT is greater than -7°C (19.4°F)
- No rough road detection
|
| Threshold Value |
Case 1 |
- Misfire rate is greater than 5% within1000 revs
|
| Case 2 |
- Misfire rate (Catalyst damage Catalyst temperature is greater than 1050°C (1922°F)) is greater than 5~33% within 200 revs
|
| Diagnostic Time |
Case 1 |
|
| Case 2 |
|
| MIL ON Condition |
Case 1 |
|
| Case 2 |
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