Malfunction Threshold
A malfunction is detected if the following conditions are present after the engine has stopped and the vehicle condition has been turned to the OFF (LOCK) mode for at least 6 hours before restarting the engine:
| Temperature difference between each sensor values | Malfunction judgment | |||
|---|---|---|---|---|
| ECT1* - ECT2** | IAT*** - ECT2** | ECT sensor 1 | IAT sensor | ECT sensor 2 |
| Higher than 57 deg.F (32 deg.C) | Higher than 57 deg.F (32 deg.C) | Normal | Normal | Failure |
| From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C) | Failure | Normal | Normal | |
| Lower than -43 deg.F(-24 deg.C) | Failure | Failure | Normal | |
| From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C) | Higher than 57 deg.F (32 deg.C) | Normal | Failure | Normal |
| From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C) | Normal | Normal | Normal | |
| From -44 deg.F (-25 deg.C) to -115 deg.F (-64 deg.C) | Normal | Failure | Normal | |
| Suspended**** | ||||
| Lower than -115 deg.F (-64 deg.C) | Normal | Failure | Normal | |
| Lower than -43 deg.F (-24 deg.C) | Higher than 57 deg.F (32 deg.C) | Failure | Failure | Normal |
| From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C) | Failure | Normal | Normal | |
| Lower than -43 deg.F(-24 deg.C) | Normal | Normal | Failure | |
*: [ECT SENSOR 1]
**: [ECT SENSOR 2]
***: [IAT SENSOR (1)]
****: Malfunction judgment is suspended because the cooled air introduced after engine start lowers the intake air temperature; the ambient temperature condition does not stay equal.[ ]: HDS Parameter