Checking the technical condition
1. Turn off the ignition.
2. Disconnect the intake damper drive connector.
3. Verify that when applying 12 V to pin 3 and «masses» on terminal 4, the actuator moves to the recirculation position.
4. When the polarity is reversed, the intake damper actuator should move to the outside air intake position.
1., 2., 3. Outdoor air
4. Recycling
5.5V (Vcc)
6. Feedback signal
7. «Weight» sensor
5. Check the voltage between terminals 6 and 7.
If the intake flap actuator fails, substitute a known-good intake flap actuator and check for proper operation.
6. If the problem persists, replace the intake damper actuator.
Replacement
1. Follow steps 10-16 of section «Replacing the Temperature Control Actuator» of this chapter.
2. Disconnect the connector (A) intake damper actuator.
3. Loosen the mounting screw and remove the drive (IN) intake flap.
4. Installation is made in an order, the return to removal.