Diagnostic Method
- Diagnosis of exhaust temperature
Abnormality Judgment
Calculate the estimated exhaust temperature when the enable conditions for judgment were established. Judge as NG if the following conditions are established within 14 seconds after starting the engine.
Judgment Value
| Malfunction Criteria | Threshold Value |
|---|---|
| Estimated exhaust temperature | < Value from Map 1 |
Map 1
| Engine coolant temperature at start °C (°F) | -40 (-40) | -30 (-22) | -20 (-4) | -10 (-14) | 0 (32) | 10 (50) | 20 (68) | 30 (86) | 40 (104) | 50 (122) |
| Threshold value AT model °C (°F) | 152 (306) | 152 (306) | 152 (306) | 152 (306) | 152 (306) | 143 (289) | 135 (275) | 127 (261) | 121 (250) | 118 (244) |
| Threshold value MT model °C (CF) | 135 (275) | 135 (275) | 135 (275) | 135 (275) | 135 (275) | 135 (275) | 134 (273) | 129 (264) | 126 (259) | 119 (246) |
Time Needed for Diagnosis: 14 seconds
Malfunction indicator light: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgement
Judge as OK when the following conditions are established after predetermined amount of time has passed.
Judgment Value
| Malfunction Criteria | Threshold Value |
|---|---|
| Estimated exhaust temperature | ≥ Value from Map 1 |
- Diagnosis of idle speed
Judges NG when all of the following conditions are established, and judge as OK if they are not established.
| Malfunction Criteria | Threshold Value |
|---|---|
| Continuous time of (Target engine RPM - Engine RPM > 300) | ≥ 10000 ms |
| (Actual retard amount > AT model: 18°CA, MT model: 13°CA) | ≥ 3000 ms |
Time Needed for Diagnosis: 6 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.