Removal/Replacement

CAUTION:
- All SRS electrical wiring harnesses are covered with yellow outer insulation.
- Before disconnecting the SRS wire harness, install the short connector(s) on the airbag(s).
- Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.

NOTE: The mode control motor can be replaced without removing the heater unit.

1. When the engine is cool, drain the engine coolant from the radiator.

WARNING:
- Do not remove the radiator cap when the engine is hot; the engine coolant is under pressure and could severely scald you.
- Keep hands away from the radiator fan. The fan may start automatically without warning and run for up to 15 minutes, even after the engine is turned off.

CAUTION: Engine coolant will damage paint. Quickly rinse any spilled engine coolant from painted surfaces.







2. Disconnect the heater hoses at the heater.

NOTE: Engine coolant will run out when the hoses are disconnected, drain it into a clean drip pan.

3. Disconnect the heater valve cable from the heater valve.
4. Remove the dashboard.
5. Remove the heater duct or evaporator.







6. Remove the dashboard support tube.
7. Remove the mode control motor 8P connector (button type only) and the four heater unit mounting nuts, then remove the heater unit.
8. Install in the reverse order of removal, and:
- Apply sealant to the grommets.
- Do not interchange the inlet and outlet hoses. Make sure that the hose clamps are secure.
- Loosen the bleed bolt on the engine and refill the radiator and reservoir tank with the proper engine coolant mixture. Tighten the bleed bolt when all the trapped air has escaped and engine coolant begins to flow from it.
- Connect all cables and make sure they are properly adjusted.