HVAC 26 INSPECTION CALIBRATION CHECK Every time the IGN is turned ON all the actuators will travel to its end stops and come to rest at the desired position selected in the control panel this is the calibration that the system does. If this is not happening then the system has to be calibrated as follows 1. Turn the IGN OFF and disconnect the battery. 2. Wait for approximately one minute and then reconnect the battery. 3. Once the battery is connected again wait for one minute and turn the IGN ON. Actuators are now calibrated. Wait for one more minute after IGN is turned ON until the actuators are calibrated. Without removing the connector operate the respective knob and measure the voltage. The reading should be as per the table below. Motor Movement VDRIVE Clockwise rotation (CW) Mode: Defrost Temperature: Full Cold +4.9V Counter Clockwise rotation (CCW) Mode: Chest Temperature: Full Hot +0.5V Maintain Position +2.5V I. AIR INLET ACTUATOR. The actuator used to operate the air intake door is a bi-directional with no feedback actuator. It controls the air intake door through the air intake control voltage. PINOUT PIN NO DESCRIPTION A (+) Vs+ B (-) GND INSPECTION
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