Diagnostic Method
Judge as NG when Diagnosis 1 or Diagnosis 2 becomes NG.
Diagnosis 1
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
JUDGEMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value |
|---|---|
| |Intake air temperature 30 sec. after engine start - Engine coolant temperature at engine start| | > Value of Map 3 |
| |Intake air temperature 30 sec. after engine start - Ambient air temperature 30 sec. after engine start| | > Value of Map 4 |
MAP SPECIFICATION
| Ambient temperature °C (°F) | -30° C (-22° F) | 30° C (86°F) | 45° C (113° F) | 60° C (140° F) |
|---|---|---|---|---|
| |Intake air temperature 30 sec. after engine start - Engine coolant temperature at engine start| °C (°F) | 12°C (21.6°F) | 12°C (21.6°F) | 22°C (39.6°F) | 22°C (39.6°F) |
MAP SPECIFICATION
| Ambient temperature °C (°F) | -30° C (-22° F) | 30° C (86°F) | 45° C (113° F) | 60° C (140° F) |
|---|---|---|---|---|
| |Intake air temperature 30 sec. after engine start - Ambient air temperature 30 sec. after engine start| °C (°F) |
20°C (36°F) | 20°C (36°F) | 32°C (57.6°F) | 32°C (57.6°F) |
Time Needed for Diagnosis: Less than 1 second
Diagnosis 2
Judge as NG when the following conditions are established.
JUDGEMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage difference between Max. and Min. | < 0.02V (Equivalent to approximately 0.5 °C (0.9°F) near 25°C (77° F)) |
Time Needed for Diagnosis: Less than 1 second
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.