SW2 L4-1.9L DOHC VIN 7 (1997)
Heater Core: Description and Operation
The heater core heats the air before it enters the passenger compartment. Engine coolant is circulated through the core to heat the air passing over the fins
of the core.
The core is functional at all times (no water valve) and may be used to temper air in A/C mode as well as heat, vent, bi-level, and defrost.