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Heater Water Pump: Inspection

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: It is not necessary to drain out all the coolant.
  1. Drain Engine Coolant From Radiator. 
  2. Remove Converter And Inverter Assembly.  See CONVERTER & INVERTER ASSEMBLY REMOVAL .
  3. Remove Heater Water Pump. 
    1. Disconnect the connector and wire harness clamp.
    2. Disconnect the water hoses from water pump.
    3. Remove the bolt and refrigerant line bracket.
      Fig 1: Locating Heater Water Pump Mounting Heater Water Pump Bolts & Clamps
      G01065460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. NOTE: At the time of installation, push the water hose onto the water pump pipe as far as water pump unit and install the hose clamp.
      Fig 2: Installing Hose Clamps
      G01065461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 3 bolts and heater water pump.

      Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)  .

  4. Inspect Heater Water Pump.  See WATER PUMP CIRCUIT .
  5. Install Heater Water Pump. 
  6. Install Converter And Inverter Assembly.  See INSTALLATION OF CONVERTER & INVERTER .
  7. Fill Engine Coolant. 
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