| DTC Strategy |
- MAX-Error of diagnosis of engine efficiency for catalyst heating during idle
|
- Intake air restriction
- Exhaust restriction
- Engine mechanical concern
- Damaged or sludge throttle body
- Vacuum leaks
- Faulty PCM
|
| Enable Conditions |
- After catalyst heating is active greater than 3s
- BARO greater than 74.5kPa (0.745bar/10.8psi)
- Engine load less than 55%
- Vehicle speed 0mph
- Time after engine start greater than 3s
- Catalyst heating active
- Engine speed greater than 600 RPM
|
| Threshold value |
- Average of spark efficiency deviation during 10s (difference between Target/Actual efficiency) greater than threshold (ECT at Start-up) Reference
Eng. Temp. at start -9.8°C (14.36°F) = Efficiency 0.5%Eng. Temp. at start 9.8°C (49.64°F) = Efficiency 0.5%Eng. Temp. at start 15°C (59°F) = Efficiency 0.5%Eng. Temp. at start 40°C (104°F) = Efficiency 0.5% |
| Diagnosis Time |
|
| MIL On Condition |
|