Toyota RAV4 Service Manual: Air outlet damper control servo motor circuit

Description

The damper servo sends pulse signals to indicate the damper position to the air conditioning amplifier.

The air conditioning amplifier activates the motor (normal or reverse) based on these signals to move the mode damper to the appropriate position, which controls the air outlet modes.

Hint:

Confirm that there are no mechanical problems because this dtc can be output when either a damper link or damper is mechanically locked.

Wiring diagram

Inspection procedure

1. Read value of intelligent tester (air out pulse)

1. Connect the intelligent tester (with can vim) to the dlc3.
2. Turn the ignition switch on and turn the intelligent tester main switch on.
3. Select the items below in the data list, and read the value displayed on the intelligent tester.

Ok: the display is as specified in the normal condition column.

2. Replace mode damper servo sub-assembly

hint:

Since the servo motor cannot be tested when it is removed from the vehicle, replace the servo motor with a normal one and check that the condition returns to normal.

Ok: same problem does not occur.

System is ok