Monitor Strategy
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
| Related DTCs | P0128: Coolant thermostat (jugment by simulated engine coolant temperature) P0128: Coolant thermostat (jugment by engine coolant temperature change at high vehicle speed) |
| Required Sensors/Components (Main) | Thermostat Engine coolant temperature sensor |
| Required Sensors/Components (Related) | Intake air temperature sensor Vehicle speed sensor |
| Frequency of Operation | Once per driving cycle: Judgment by simulated engine coolant temperature Continuous: Judgment by engine coolant temperature change at high vehicle speed |
| Duration | 245 seconds: Judgment by simulated engine coolant temperature -: Judgment by engine coolant temperature change at high vehicle speed |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |