Typical Enabling Conditions
| All of the following conditions are met | - |
| Time after engine switch on (IG) and engine not running | Less than 20 seconds |
| Soak Time | 7 hours or more |
| Battery voltage | 10.5 V or higher |
| Time after engine start | 46 seconds or more (for RC350 models) 83 seconds or more (for RC300 models) |
| Either of the following conditions is met | (a) or (b) |
| (a) Minimum intake air temperature after engine start | -10°C (14°F) or higher |
| (b) Engine coolant temperature before engine start | -10°C (14°F) or higher |
| Engine coolant temperature sensor circuit fail (P0117, P0118, P0125) | Not detected |
| Intake air temperature sensor circuit fail (P0112, P0113) | Not detected |
| Mass air flow meter circuit fail (P0102, P0103) | Not detected |
| Soak timer fail (P2610) | Not detected |