Diagnostic Method
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
JUDGMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value |
|---|---|
| When any one of the followings is established: | |
| <Judgment 1> | |
| Actual engine coolant temperature | < 60°C (140°F) |
| and Σ (Estimated engine coolant temperature - actual engine coolant temperature) |
> Value of Map 3 |
| <Judgment 2> | |
| Actual engine coolant temperature | < Regulated temperature* - Value of Map 4 |
| and Σ (Estimated engine coolant temperature - actual engine coolant temperature) |
> Value of Map 5 |
| *Regulated temperature = 89.2 degrees | |
| <Judgment 3> | |
| Estimated engine coolant temperature - actual engine coolant temperature | > 11.1°C (20°F) |
| and Σ (Estimated engine coolant temperature - actual engine coolant temperature) |
> Value of Map 6 |
MAP 3 SPECIFICATION
| Engine coolant temperature at engine starting °C (°F) | -7 (19.4) | 0 (32) | 10 (50) | 25 (77) | 30 (86) | 40 (104) |
|---|---|---|---|---|---|---|
| Threshold Value °C (°F) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 961.5 (1730.7) |
MAP 4 SPECIFICATION
| Estimate ambient temperature °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 18.6 (33.5) | 11.1 (20) | 11.1 (20) | 11.1 (20) |
MAP 5 SPECIFICATION
| 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) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1201.9 (2163.4) |
MAP 6 SPECIFICATION
| Engine coolant temperature at engine starting °C (°F) | -7 (19.4) | 8 (46.4) | 10 (50) | 25 (77) |
|---|---|---|---|---|
| Threshold Value °C (°F) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) | 1387.5 (2497.5) |
Time needed for diagnosis: Less than 1 second
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.