Air Conditioning System (For Automatic Air Conditioning System)

DTC B1442/42 Air Inlet Damper Control Servo Motor Circuit

DESCRIPTION

DTC Detection Condition:

The air inlet damper servo motor sends pulse signals to inform the air conditioning amplifier of the damper position. The air conditioning amplifier activates the motor (normal, reverse) based on the signals to move the air inlet damper to any position, which controls the intake air settings (FRESH, FRESH / RECIRCULATION and RECIRCULATION).

HINT: Confirm that no mechanical problem is present because this diagnostic trouble code can be output when either a damper link or damper is mechanically locked.

Wiring Diagram:

Step 1:

Step 1(Continued)-4:

Step 4(Continued)-5:

INSPECTION PROCEDURE