Yaris L4-1.5L (1NZ-FE) (2007)
(2) Maintain the engine speed at 2,000 to 2,500 rpm and warm up the engine until the cooling fan operates.
(g) Stop the engine and wait until the coolant cools down.
(h) If the engine coolant level is below the full level, perform steps (b) through (g) again and repeat the operation until the engine coolant level
stays at the full level.
(i)
Recheck the engine coolant level inside the radiator reservoir tank assembly. If it is below the full level, add engine coolant.
3. CHECK FOR ENGINE COOLANT LEAKAGE