Sienna FWD V6-3.3L (3MZ-FE) (2006)
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Water Pump: Testing and Inspection
INSPECTION
1. INSPECT WATER PUMP ASSEMBLY
a) Visually check the drain hole for coolant leakage. If leakage is found, replace the water pump.
b) Turn the pulley and check that the water pump bearing moves smoothly and does not make noise. If necessary, replace the water pump.
