Highlander 2WD V6-3.3L (3MZ-FE) Hybrid (2006)
Radiator: Testing and Inspection
RADIATOR
ON-VEHICLE INSPECTION
1. INSPECT RADIATOR CAP SUB-ASSEMBLY
a) If there are water stains or foreign matter on portion 1, 2 or 3, clean the part(s) by: 1) washing with water, and 2) rubbing with your hand(s), a
nylon brush, or equivalent.
b) Check that portion 1, 2 or 3 is not deformed or swollen.
c) Check that portions 3 and 4 are not stuck together.
d) Apply engine coolant to portions 2 and 3 before using the radiator cap tester.
HINT: When using the radiator cap tester, tilt the radiator cap upward 30° or more as shown in the illustration.
e) Pump the tester several times and read the maximum pressure. (*1)
Pumping speed: One pumping maximum per second
(*1): Even if the maximum pressure is not maintained, the radiator cap sub-assembly can be considered normal.
Standard
If the opening valve pressure is not within the standard range, replace the radiator cap.
ON-VEHICLE CLEANING
1. CHECK FINS BLOCKAGE
a) Check that the radiator and condenser are not blocked with leaves, dirt, or insects. Clean the hose connections.
If the fins are blocked, wash them with water or a steam cleaner.
CAUTION:
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If the distance between the steam cleaner and core is too close, the fins may be damaged.