Diagnostic Method
- Exhaust gas temperature diagnosis
Abnormality Judgment
Calculate the estimated exhaust gas temperature when the diagnostic enable condition is established. Judge as NG when the following conditions are established after engine starting within the predetermined time.
Judgment Value
JUDGMENT VALUEMalfunction criteria Threshold value Estimated exhaust gas temperature < Value from Map Map
MAP REFERENCECoolant temperature after starting the engine -40°C (-40°F) -30°C (-22°F) -20°C (-4°F) -10°C (14°F) 0°C (32°F) 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F) 50°C (122°F) Threshold Value 0°C (32°F) 0°C (32°F) 0°c (32°F) 0°C (32°F) 155°C (311°F) 150°C (302°F) 155°C (311°F) 140°C (284°F) 133°C (271.4°F) 130°C (266°F) Time Needed for Diagnosis: 14 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
Judge as OK and clear the NG if the following conditions are established.
Judgment Value
JUDGMENT VALUEMalfunction criteria Threshold value Estimated exhaust gas temperature ≥ Value from Map Time Needed for Diagnosis: Less than 1 second
- Idle speed diagnosis
Abnormality Judgment
Judge as NG when the following conditions are established after the predetermined time.
Judgment Value
JUDGMENT VALUEMalfunction criteria Threshold value Continuous time of (Target engine speed - Actual engine speed > -200 RPM) ≥ 6000 ms Continuous time of (actual retard amount > 20°CA) ≥ 0 ms
Time Needed for Diagnosis: 14 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
Judge as OK and clear the NG if the following conditions are established.
Judgment Value
| Malfunction criteria | Threshold value |
|---|---|
| Continuous time of (Target engine speed - Actual engine speed > -200 RPM) | < 6000 ms |
| Continuous time of (actual retard amount > 20°CA) | < 0 ms |
Time Needed for Diagnosis: Less than 1 second