Heater Core: Service and Repair
HEATER CORE REPLACEMENTTOOLS REQUIRED
^ J 38185 Spring Hose Clamp Pliers
^ J 39400 Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Drain the cooling system. Refer to Draining and Filling Cooling System (LX5) or Draining and Filling Cooling System (L47) in Cooling System.
3. Remove the heater hoses (1, 2) from the heater core.
4. Remove the left side sound insulator. Refer to Closeout/Insulator Panel Replacement Left in Instrument Panel, Gauges and Warning Indicators.
5. Remove the right side sound insulator. Refer to Closeout/Insulator Panel Replacement Right in Instrument Panel, Gauges and Warning Indicators.
6. Remove the console assembly. Refer to Console Replacement - Front Floor in Instrument Panel, Gauges and Warning Indicators.
7. Remove the lower dash support bracket.
8. Remove the auxiliary air distribution duct adapter.
9. Remove the air distributor duct screws (1, 2). Due to the difficulty in the removal of the right side screw (2), it will not be necessary to install upon reassembly.
10. Remove the air distributor duct.
11. Remove the heater core heat shield screws.
12. Remove the heater core heat shield.
13. Remove the heater core cover screws (1).
14. Remove the heater core cover.
15. Remove the retaining screw and strap from the heater core.
16. Remove the heater core.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the heater core into the HVAC module using the attaching straps and screws.
Tighten
Tighten the screw to 1.4 N.m (12 lb in).
2. Install the heater core cover.
3. Ensuring the seals at the front of dash are in the proper positions, install the heater core cover screws.
Tighten
Tighten the screws to 1.4 N.m (12 lb in).
4. Install the heater core heat shield and screws (1).
Tighten
Tighten the screws to 1.4 N.m (12 lb in).
5. Install the air distributor duct and the left screw (1). Ensure the right tab is seated properly.
Tighten
Tighten the screw to 1.4 N.m (12 lb in).
6. Install the auxiliary air distribution duct adapter.
7. Install the lower dash support bracket.
8. Install the console assembly. Refer to Console Replacement - Front Floor in Instrument Panel, Gauges and Warning Indicators.
9. Install the left side sound insulator. Refer to Closeout/Insulator Panel Replacement - Left in Instrument Panel, Gauges and Warning Indicators.
10. Install the right side sound insulator. Refer to Closeout/Insulator Panel Replacement - Right in Instrument Panel, Gauges and Warning Indicators.
11. Install the heater hoses and clamps using the J 38185.
12. Fill the cooling system. Refer to Draining and Filling Cooling System (LX5) or Draining and Filling Cooling System (L47) in Cooling System.
13. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
14. Leak test the fittings of the component using J 39400.