For 1990-2009 cars only
Before beginning the functional test of the heater system, ensure that the vehicle is idling with the coolant hot and the thermostat open. Ensure that the coolant temperature is 90°C (194°F). Even if a problem is found during any intermediate step of the functional test, complete the test before the repair begins.
Mode Control | Temp Control | Fan Switch | Blower Speed | Heater Outlets | Defroster Outlets | See Remarks |
|---|---|---|---|---|---|---|
Off | Cold | - | Off | No Air Flow | No Air Flow | - |
Vent | Cold | High | High | No Air Flow | No Air Flow | A,B |
Heater | Hot | High | High | Air Flow | Min Air Flow | A,B |
Blend | Hot | High | High | Air Flow | Air Flow | A,B |
Def | Hot | High | High | Min Air Flow | Air Flow | A,B |
A. Engage the detent in each mode. | ||||||
B. Some air bleed will occur through defroster and side window defogger vents in all modes. | ||||||
