Air Door Actuator / Motor: Testing and Inspection

1. Manual A/C:
INSPECT AIR INLET SERVOMOTOR
Inspect the servomotor operation.




1. Connect the positive (+) lead from the battery to terminal 7 and negative (-) lead to terminal 3.
2. Check the motor arm rotates counterclockwise and arm stops on the "FRESH" position.




3. Connect the positive (+) lead from the battery to terminal 7 and negative (-) lead to terminal 1.
4. Check the motor arm rotates counterclockwise and arm stops on the "RECIRC" position.
If operations are not as specified, replace the servomotor

2. Auto A/C:
INSPECT AIR INLET SERVOMOTOR
a. Inspect the servomotor operation.




1. Connect the positive (+) lead from the battery to terminal 6 and negative (-) lead to terminal 7, then check that the arm turns to "FRESH" side smoothly.




2. Connect the positive (+) lead from the battery to terminal 7 and negative (-) lead to terminal 6, then check that the arm turns to "RECIRC" side smoothly.
If operations are not as specified, replace the servomotor.







b. Inspect position sensor resistance.
Measure resistance between terminals at servomotor arm each position as shown in the illustration.
If resistance is not as specified , replace the servomotor.

3. Auto A/C Only:
INSPECT AIR MIX SERVOMOTOR
a. Inspect servomotor operation.




1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, then check that the arm turns to "COOL" side smoothly.




2. Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead to terminal 1, then check that the arm turns to "WARM" side smoothly.
If operations are not as specified, replace the servomotor.







b. Inspect position sensor resistance. Measure resistance between terminals at servomotor arm each position as shown in the illustration.
If resistance is not as specified replace the servomotor.







4. INSPECT AIR OUTLET SERVOMOTOR
Inspect the servomotor operation.
1. Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead to terminal 1.
2. Connect the negative (-) lead from the battery to each terminal and check that the arm turns to each position, as shown in the illustration.
If operation is not as specified, replace the servomotor.