Cooling System -- On-Vehicle Inspection |
| 1. INSPECT FOR COOLANT LEAK |
Remove the radiator cap.
- CAUTION:
- To avoid being burned, do not remove the radiator cap while the engine and radiator are still hot. Thermal expansion may cause hot engine coolant and steam to blow out from the radiator.
Fill the radiator with coolant and attach a radiator cap tester.
Warm up the engine.
Using the radiator cap tester, increase the pressure inside the radiator to 118 kPa (1.2 kgf/cm2, 17 psi), and then check that the pressure does not drop.
If the pressure drops, check the hose, radiator and water pump for leakage. If no external leakage is found, check the heater core, cylinder block and cylinder head.
Install the radiator cap.
| 2. INSPECT RESERVOIR TANK ENGINE COOLANT LEVEL |
The engine coolant should be between the L and F lines when the engine is cold. If the engine coolant is below the L line, check for leakage and add TOYOTA Super Long Life Coolant (SLLC) or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology to the F line.
- NOTICE:
- Never use water as a substitute for engine coolant.
Reinstall the radiator cap.
| 3. INSPECT ENGINE COOLANT QUALITY |
Remove the radiator cap.
- CAUTION:
- To avoid being burned, do not remove the radiator cap while the engine and radiator are still hot. Thermal expansion may cause hot engine coolant and steam to blow out from the radiator.
Check for excessive deposits of rust or scales around the radiator reservoir cap and radiator reservoir filler hole. Also, the engine coolant should be free of oil.
If excessively dirty, replace the engine coolant.
Install the radiator cap.