IS 250C V6-2.5L (4GR-FSE) (2011)
Radiator: Testing and Inspection
4GR-FSE COOLING: RADIATOR: ON-VEHICLE INSPECTION
1. CHECK RADIATOR CAP SUB-ASSEMBLY
(a) Measure the valve opening pressure.
(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean the part(s) with water and finger scouring.
(2) Check that rubber packing 1, 2 or 3 is not deformed, cracked or swollen.
(3) Check that rubber packings 3 and 4 are not stuck together.
(4) Apply engine coolant to rubber packings 2 and 3 before using the radiator cap tester.
(5) When using the cap tester, tilt it 30° or more.
(6) Pump the cap tester several times, and check the maximum pressure*1.
Pumping speed:
1 pump per second
HINT
*1: Even if the cap cannot maintain the maximum pressure, it is not a defect.
Judgment Criterion:
If the maximum pressure is less than the minimum standard valve, replace the radiator cap sub-assembly.