Heater Core Case: Service and Repair

Heater and Cooling Unit

REMOVAL

1. Disconnect the ground cable from the battery.
2. Using the refrigerant recovery system, discharge refrigerant.
3. Drain coolant from the radiator.
4. Remove the bolts securing expansion valve and pipe in engine compartment. Release the heater hose clamps in engine compartment to remove the hoses.






5. Remove the instrument panel.
6. Remove the blower motor unit assembly.
7. Disconnect the connectors of the actuator, thermo sensor, blower resister, and power transistor.
8. Remove the bolt and nuts and remove the heater and cooling unit.






INSTALLATION

1. Install in the reverse order of removal.
2. Charge refrigerant.

HEATER COOLING UNIT

Tightening torque: N.m (kgf.m, ft.lb)
T1: 5.0 (0.5, 3.7)
T2: 6.68 (0.7, 4.9)
T3: 7.5 (0.76, 5.5)