OEM 2005 Scion xB Heater Core

2005 Scion xB Parts Questions & Experts Answers

• Q: How to service and repair the heater core on 2005 Scion xB?

  A: The refrigerant discharge process for refrigeration system service starts with Special Service Tool: 09870-00015 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). Follow up by removing suction hose sub-assembly and the liquid tube sub-assembly A with Special Service Tool: 09870-00025. Disconnect the suction hose sub-assembly and the liquid tube sub-assembly A using Special Service Tool: 09870-00025 and then remove the heater water inlet hose A with pliers. Follow the same procedure to disconnect the heater water outlet hose A from its installation. First remove the heater control knob and then proceed to remove the instrument cluster finish panel sub-assembly CTR followed by the instrument panel sub-assembly w/passenger Air Bag assembly and the instrument panel assembly lower w/instrument panel reinforcement. Disassembly of the defroster nozzle assembly needs the removal of its retaining clip followed by disconnecting two claws. The procedure requires you to detach the ECM as well as the air conditioning blower assembly and both the outer and inner cables from the defroster damper control cable sub-assembly and air mix damper control cable sub-assembly. Detach air duct rear No.2 and air duct rear No.1 by the same procedure. The heater radiator assembly removal requires disconnecting three connectors and unfastening both a bolt and earth bolt from PTC heater before removing two nuts. To access the air duct assembly you must first disengage 4 claws before you can remove the heater cover by unscrewing its 2 clawed retainers. The thermistor assembly and cooler wiring No.2 both require removal through a process of unscrewing 5 screws and disengaging the claw followed by taking off the clamp. Unscrew the bracket from the heater radiator unit sub-assembly while also removing the clamp and disconnecting its connector. Insert and set the FACE position on the defroster damper control cable sub-assembly while securing both inner and outer cables before checking for correct performance. Perform the same installation procedure for the air mix damper control cable sub-assembly during MAX operation. COOL position. The service procedure involves placement of the ECM followed by assembly of instrument panel lower, instrument panel reinforcement, passenger Air Bag assembly and instrument cluster end. Add heater control knob last. Follow these steps to install sub-assembly A of the liquid tube along with sub-assembly B of the suction hose followed by engine coolant addition and refrigerant charging using Special Service Tool: 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). The tool requires a specified amount of 380 plus or minus 30 g (13.9 plus or minus 1.1 oz.). Before concluding the process you should warm up the engine and examine coolant leaks then check refrigerant levels.