Air Door Position Sensor / Switch: Testing and Inspection
INSPECTIONAIR MIXING DAMPER CONTROL MOTOR CHECK
CAUTION: Do not apply battery voltage when the damper is in the MAX COOL or MAX HOT position.
Check the air mix damper control motor by the given procedures.
POTENTIOMETER CHECK
While checking the air mix damper control motor, measure the resistances between terminals numbers 3 and 5 and between numbers 3 and 7. At this time, the resistances should change gradually within the standard value.
Standard value: 1.7 (MAX HOT) 5.0 (MAX COOL) kohms