- Disconnect and isolate the negative battery cable.
- Remove the silencer from beneath the driver side end of the instrument panel.
- Disconnect the wire harness connector from the blend door actuator being serviced.
Remove the two screws that secure the blend door actuator being serviced to the HVAC air distribution housing and remove the actuator.
- Position the blend door actuator being serviced onto the air distribution housing. If necessary, rotate the actuator slightly to align the splines on the actuator output shaft with those in the blend air door linkage.
- Install the two screws that secure the blend door actuator to the air distribution housing. Tighten the screws to 17 inch lbs. (2 Nm).
- Connect the HVAC wire harness connector to the blend door actuator being serviced.
- Install the silencer under the driver side end of the instrument panel.
Reconnect the negative battery cable and perform the heater-A/C control calibration procedure, as follows:
NOTEThe A/C-heater control module must be recalibrated each time an actuator motor or the A/C-heater control is replaced. If the vehicle is so equipped, the calibration procedure also includes rear HVAC positions for each actuator motor.
- Turn the ignition switch to the ON position.
- If equipped with the Manual Temperature Control (MTC) system, press and hold the Power and Recirculation buttons for at least five seconds. If equipped with the automatic temperature control (ATC) system, simultaneously press and hold the Power and Recirculation buttons on the A/C-heater control for at least five seconds. The MTC A/C-heater control Power button light emitting diode (LED) and Recirculation button LED, or the ATC A/C-heater control Delay and Recirculation graphics will begin to flash when the calibration procedure has begun.
- The calibration procedure should take less than two minutes to complete for the manual A/C-heater control, and less than twenty seconds for the ATC A/C-heater control. When the LEDs or graphics stop flashing, the calibration procedure is complete.
- If the LEDs or graphics continue to flash beyond the two minute (manual) or twenty second (ATC) calibration time, it indicates that the A/C-heater control has detected a failure and a Diagnostic Trouble Code (DTC) has been set. The LEDs or graphics will continue to flash even after the ignition switch is cycled Off and On, until a successful calibration is completed or until the vehicle has been driven about 8 miles (13 km).