B1442

DTC B1442/42 Air Inlet Damper Control Servo Motor Circuit

DESCRIPTION

DTC Detection Condition:

The damper servo (air inlet control) sends pulse signals to inform the air conditioner amplifier of the damper position. The air conditioner amplifier activates the motor (normal, reverse) based on the signals to move the air inlet mode selection air inlet control 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 code can be output when either a damper link or damper is mechanically locked.

Wiring Diagram:

Step 1:

Step 1 (Continued)-2:

INSPECTION PROCEDURE