MX-6 L4-1991cc 2.0L DOHC (1993)
Air Door Actuator / Motor: Testing and Inspection
Air Mix Actuator
Symptom: Airflow temperature does not change
Related components Air mix actuator, heater control unit, wiring harness
System Operation
The air mix actuator adjusts the opening of the mix door by using a link and rod mechanism. A potentiometer attached to the link outputs a signal to
the heater control unit. This signal changes as the position of the door changes. The door position is adjusted based on the temperature control lever
setting on the heater control unit.
Step 1
1. Disconnect the air mix actuator connector.
2. Connect battery positive voltage to terminals G and H of the air mix actuator and check the actuator operation.
3. If correct, go to Step 2.
4. If not as specified, replace the air mix actuator.
Step 2
1. Verify that the air mix actuator connector is disconnected.