Circuit Description
WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
If engine coolant temperature does not reach 167°F (75°C) after warm up, DTC will set. Possible causes are:
- Faulty thermostat.
- Faulty cooling system.
- Faulty engine coolant temperature sensor.
- Faulty ECM.