ENGINE COOLANT LEVEL INSPECTION [SKYACTIV-G 2.0]
| WARNING | Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes. When you are sure all the pressure is gone, turn the cap using the cloth, and remove it. |
Note. If the "FL22" mark is shown on or near the cooling system cap, use Mazda Genuine FL22 engine coolant. (Scheme 38): Identifying FL22 Mark On Cooling System Cap FL22 type engine coolant is shipped as a diluted solution. Use the solution as is when replacing coolant.
Scheme 38
- Verify that the engine coolant level in the coolant reserve tank is between the MAX and MIN marks. see scheme 3: Identifying Coolant Reserve Tank MAX And MIN Marks If the engine coolant level is below the MIN mark, add engine coolant.
ENGINE COOLANT LEAKAGE INSPECTION [SKYACTIV-G 2.0]
| WARNING | Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes. When you are sure all the pressure is gone, turn the cap using the cloth, and remove it. |
Scheme 39
- Inspect the engine coolant level. (See «ENGINE COOLANT LEVEL INSPECTION [SKYACTIV-G 2.0]»(ref-520423-S32881662782013010300000).)
- Remove the cooling system cap.
- Install the SST or aftermarket equivalent and a radiator cap tester to the coolant reserve tank filler port. see scheme 11: Installing SST Or Aftermarket Equivalent And Radiator Cap Tester To Coolant Reserve Tank Filler Port
- Apply pressure using the radiator cap tester. CAUTION: Applying more than 110 kPa {1.12 kgf/cm 2, 16.0 psi} can damage the hoses, fittings, and other components, and cause leakage. Engine coolant leakage inspection pressure 110 kPa {1.12 kgf/cm 2, 16.0 psi} [1 min]
- When pressurizing the cooling system, verify that the pressure is maintained. If the gauge needle drops, it may indicate water leakage. Repair or replace the applicable part.
COOLING SYSTEM CAP INSPECTION [SKYACTIV-G 2.0]
| WARNING | Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes. When you are sure all the pressure is gone, turn the cap using the cloth, and remove it. |
Scheme 40
- Clean the cooling system cap and the sealed part.
- Inspect the cooling system cap for cracks or everted seal. If there is any malfunction, replace the cooling system cap.
- Attach the cooling system cap to the SST or aftermarket equivalent and a radiator cap tester. see scheme 12: Attaching Cooling System Cap To SST Or Aftermarket Equivalent And Radiator Cap Tester
- Hold the cooling system cap downward and apply pressure gradually. Verify that the pressure is held stable for 10 s. If the pressure is not held stable, replace the cooling system cap. Cooling system cap valve opening pressure 90-110 kPa {0.92-1.12 kgf/cm 2, 14.0-15.9 psi}
THERMOSTAT INSPECTION [SKYACTIV-G 2.0]
- Remove the thermostat. (See «THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520423-S31865572832013010300000) .)
- Visually check that the thermostat valve is closed.
- Place the thermostat in water. WARNING: During inspection, the thermostat and water are extremely hot and can cause severe burns. Do not touch the thermostat and water.
- Heat the water and check the following. Opening temperature and valve lift If there is a malfunction, replace the thermostat. Thermostat initial-opening temperature 80.5-83.5 °C {177-182 °F} Thermostat full-open temperature 95 °C {203 °F} Thermostat full-open lift More than 8.5 mm {0.33 in}
COOLING FAN COMPONENT INSPECTION [SKYACTIV-G 2.0]
- Perform the cooling fan control system inspection. (See «ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0]»(ref-520418-S12127816812013010300000) .)
