Typical Enabling Conditions
ALL
| Monitor runs whenever the following DTCs are not stored | None |
COLD START MONITOR
| All of the following conditions are met | - |
| Battery voltage | 10.5 V or higher |
| Time after engine start | 1 second or more |
| Engine coolant temperature at engine start | Less than 60°C (140°F) |
| Soak time | 0 seconds or more |
| Accumulated mass air flow | 6289 g or more (for RC350 2WD models) 6030 g or more (for RC350 AWD models) 8901 g or more (for RC300 models) |
| Engine | Running |
| Fuel cut | Off |
| Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) | Not detected |
| Intake air temperature sensor circuit fail (P0112, P0113) | Not detected |
| Thermostat fail (P0128) | Not detected |
| Difference between engine coolant temperature at engine start and intake air temperature | Less than 40°C (72°F) |
SOAK MONITOR
| All of the following conditions are met | - |
| Battery voltage | 10.5 V or higher |
| Engine | Running |
| Soak time | 5 hours or more |
| Either of the following conditions is met | (a) or (b) |
| (a) Engine coolant temperature | 60°C (140°F) or higher |
| (b) Accumulated mass air flow | 12579 g or more (for RC350 2WD models) 12060 g or more (for RC350 AWD models) 17802 g or more (for RC300 models) |
| Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) | Not detected |
| Intake air temperature sensor circuit fail (P0112, P0113) | Not detected |
| Thermostat fail (P0128) | Not detected |
| Soak timer fail (P2610) | Not detected |