| DTC Strategy |
Case 1 |
|
- Poor connection or damaged harness
- Faulty ECT sensor
- Faulty cooling system
|
| Case 2 |
|
| Case 3 |
|
| Enable Conditions |
Case 1 |
- No relevant failure
- 6V <Battery voltage
- Coolant temperature at Start <76°C (169°F)
|
| Case 2 |
- No relevant failure
- 11V <Battery voltage < 16V
- Coolant temperature at Start < 76°C (169°F)
- -10°C (14°F) <Intake air temp. < 70°C (158°F)
- -10°C (14°F) <Ambient temperature
- More than 250 sec. (cumulative) Part Load driving condition (engine rpm >1400, vehicle speed >22 mph and MAF >20 kg/h)
- More than 200 sec. (cumulative) Low Load driving condition (trailing fuel cut off or idle with vehicle speed < 12mph)
|
| Case 3 |
- No relevant failure
- Oil temp. at engine stop of previous driving cycle 70°C (158°F)
- Coolant temp. at engine stop of previous driving cycle < 70°C (158°F)
- Oil temp. at start < 35°C (95°F)
- Intake air temp. at start < 35°C (95°F)
|
| Threshold Value |
Case 1 |
- Modeled coolant temp. increase < Threshold But measured coolant temp. increase < Threshold
|
| Case 2 |
- Coolant temperature signal variation since engine Start <2.25°C (4°F)
|
| Case 3 |
- Coolant temperature in start < 53°C (127°F) (In case of coolant temp.> threshold but oil temp. &intake air temp <threshold)
|
| Diagnostic Time |
|
| MIL On Condition |
|