Diagnostic Method
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
JUDGMENT VALUE
| Malfunction Criteria | Threshold Value |
|---|---|
| When any one of the followings is established. | |
| < Judgment 1 > | |
| Actual engine coolant temperature | < Value of Map 4 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 5 |
| < Judgment 2 > | |
| Actual engine coolant temperature | < Regulated temperature - Value of Map 6 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 7 |
| < Judgment 3 > | |
| Estimated engine coolant temperature - actual engine coolant temperature | > Value of Map 8 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | > Value of Map 9 |
MAP 4
| Estimate ambient temperature °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
| Threshold Value °C (°F) | 70 (158) | 70 (158) | 70 (158) | 70 (158) |
MAP 5
| Engine coolant temperature at engine starting °C (°F) | -7 (19.4) | 0 (32) | 8 (46.4) | 10 (50) | 30 (86) | 40 (104) |
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1200 (2160) |
MAP 6
| Estimate ambient temperature °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
| Threshold Value °C (°F) | 17.9 (32.2) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 7
| Engine coolant temperature at engine starting °C (°F) | -7 (19.4) | 0 (32) | 8 (46.4) | 10 (50) | 30 (86) | 35 (95) |
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1500 (2700) |
MAP 8
| Estimate ambient temperature °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
| Threshold Value °C (°F) | 11.1 (20) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 9
| Engine coolant temperature at engine starting °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
| Threshold Value °C (°F) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) | 1731.6 (3116.9) |
Time Needed for Diagnosis: 300 - 700 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 continuous time while the following conditions are established is more than the predetermined time.
JUDGMENT VALUE
| Malfunction Criteria | Threshold Value |
|---|---|
| All of the following conditions are established. | |
| < Judgment 1 > | |
| Actual engine coolant temperature | ≥ Value of Map 4 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | ≤ Value of Map 5 |
| < Judgment 2 > | |
| Actual engine coolant temperature | ≥ Regulated temperature - Value of Map 6 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | ≤ Value of Map 7 |
| < Judgment 3 > | |
| Estimated engine coolant temperature - actual engine coolant temperature | ≤ Value of Map 8 |
| and | |
| Σ (Estimated engine coolant temperature - actual engine coolant temperature) | ≤ Value of Map 9 |
| and | |
| Actual engine coolant temperature | ≥ Regulated temperature - Value of Map 10 |
MAP 10
| Estimate ambient temperature °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
| Threshold Value °C (°F) | 17.9 (27.7) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
Time Needed for Diagnosis: 300 - 700 seconds