General Information: DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Calculation of engine roughness
|
- Faulty spark plugs or Ignition coil
- Incorrect valve timing
- Uneven compression
- Air leakage
- Improper Fuel pressure or dirty fuel.
- Blocked/Leaking injectors
- Leakage between cooling system and cylinder
|
| Enable Conditions |
- Engine load ratio :14~64%
- 500 < Engine speed (RPM) ≤6700
- Mass air flow gradient/sec. :12~60%
- Throttle gradient/sec. : 0.5~10.5%
- Coolant temperature >20°C (68°F) if start temp. ≤-7°C (19°F)
- No relevant failure
- Fuel cut-off not active
- 11V < Battery voltage ≤16V
|
| Threshold Value |
- Misfire detected on 2 or more cylinders
|
| Diagnostic Time |
|
| Mil On Condition |
- Immediate (Misfire enough to damage the catalyst)
- 2 Driving Cycles (Misfire breaking the emission regulation)
|