When Monitored
This diagnostic runs when the following conditions are met:
- With the engine running.
- Start up coolant temperature less than 65°C (149°F).
- Ambient temperature between -8°C (17.6°F) and 50°C (122°F).
- Average vehicle speed greater than 16 km/h (10 mph) until coolant temperature reaches 85°C.
- Engine speed does not go above 5400 RPM for more than 32 seconds.
- The pass/fail determination point is reached when the coolant temp model reaches 88°C (190.4°F).