OEM Toyota Prius Heater Core

Toyota Prius Heater Core Parts and Q&A

• Heater Core
  87107-47060
  Q: How to service and repair the heater core on Toyota Prius?

  A:

  The refrigerant discharge process for refrigeration systems starts with Special Service Tool: 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). Detach the suction hose sub-assembly after verifying Special Service Tool: 09870-00015 installation and remove the 2 O-rings from the suction hose when sealing the opening with vinyl tape to stop moisture intrusion. After disconnecting cooler refrigerant pipe E with the same suction hose procedures, continue by removing heater water hoses A and B in preparation for coolant leaks. Separate the instrument panel sub-assembly containing the passenger Air Bag with its attached lower instrument panel and air duct rear No.3 by releasing all associated claws. The technician should extract the sunroof and then proceed with the removal of the heater control sections No.1, No.2, and No.3 and detach the defroster nozzle assembly together with the transmission control ECU assembly and both the ECM and network gateway ECU. Proceed to separate the instrument panel brace sub-assembly No.1 from other parts that include the air conditioning amplifier assembly and steering column assembly and instrument panel reinforcement assembly by disconnecting all required connectors and clamps. The service proceeds with removal of the air conditioner unit assembly, blower assembly, defroster lower nozzle assembly, air mix control servomotor, air outlet control servomotor, air conditioning tube & accessory assembly followed by the cooler expansion valve and heater radiator unit sub-assembly while accounting for potential coolant leaks. The procedure requires removal of cooler evaporator sub-assembly No.1 and evaporator temperature sensor once air duct No.1 and the quick heater assembly come out. The tech installs cooler evaporator sub-assembly No.1 with new O-rings that receive compressor oil (ND-OIL 11) application before proceeding to install the cooler expansion valve and air conditioning tube & accessory assembly. The tech completes the operation by adhering to torque specifications. The technician should reinstall the air conditioner unit assembly together with instrument panel reinforcement assembly as well as instrument panel brace sub-assembly No.1 while fully tightening the air conditioner unit assembly. The service technician should reinstall the steering column assembly then proceed with installation of lower instrument panel and instrument panel including passenger Air Bag assembly. Attach pipe E of the cooler refrigerant liquid and the suction hose sub-assembly while checking for refrigerant leaks. Use Special Service Tool: 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080) to charge the refrigerant and add engine coolant until reaching 450 plus or minus 30 g (15.87 plus or minus 1.05 oz.). Verify coolant leakages after which warm up the compressor and do a comprehensive leak test and torque sensor zero-point calibration.