Typical Enabling Conditions
WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
ECT sensor cold start monitor:
TYPICAL ENABLING CONDITIONS
| Monitor will not run if the following DTCs are present | None |
| Battery voltage | 10.5 V or more |
| Time after engine start | 1 second or more |
| ECT at engine start | Less than 60°C (140=F) |
| IAT sensor circuit | OK |
| Soak time | 0 seconds or more |
| Accumulated MAF | 1367 g or more |
| Engine | Not running |
| Fuel cut | OFF |
| Difference between ECT at engine start and IAT | Less than 40°C (72°F) |
ECT sensor soak monitor:
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever the following DTCs are not present | None |
| Battery voltage | 10.5 V or more |
| Engine | Running |
| Soak time | 5 hours or more |
| Either conditions (a) or (b) is met: | - |
| (a) ECT | 60°C (140°F) or more |
| (b) Accumulated MAF | 2966 g or more |