The recirculate/fresh switch sends a voltage signal to the recirculation control motor which then opens the recirculate/fresh door to allow outside air to enter the vehicle or to recirculate the air that is already in the vehicle.
- Disconnect the negative battery cable.
- Disconnect the control motor wire connector.
- Connect a 12 volt positive lead to terminal 3 and the negative lead to terminal 2 of the control motor connector.
- Using a jumper wire, connect terminal 2 to terminal 4 and the motor should turn to the FRESH position.
- Next, connect terminal 2 to terminal 1 and the motor should turn to the REC position.
- If not as specified, replace the recirculation control motor.
See Figure 1
- Connect a 12 volt positive lead to terminal 1 of the recirculation motor and the negative lead to terminals 2 and 3. the recirculation control motor should run smoothly.
- Next disconnect the ground from 2 or 3. The recirculation control motor should now stop at the FRESH or RECIRCULATE position.
Do not cycle the re-circulation motor for any more time than is necessary for testing.
- If the recirculation control motor does not run, remove it. Check the recirculation control linkage and door for smooth movement. If the linkage moves smoothly, replace the recirculation control motor.
REMOVAL & INSTALLATION
- Disconnect the negative battery cable and disable the SRS system (if equipped.)
- Remove the blower motor assembly.
- Remove screws attaching recirculation control motor.
- Remove wire connectors.
- Disconnect all linkage.
- Install the control motor in position and reinstall the blower housing assembly.
- Connect the negative battery cable.