AIR CONDITIONING SYSTEM, Diagnostic DTC:B1453/53

DTC Code DTC Name
B1453/53 Driver Side Air Outlet Damper COOL Control Servo Motor Circuit

DESCRIPTION

The air mix damper servo (for driver side COOL) 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 mix damper (for driver side COOL) to any position. As a result the amount of air that has passed through the evaporator and is now passing through the heater core is adjusted, and the temperature of the air blowing toward the driver side is controlled.

Tech Tips

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

DTC No. DTC Detection Condition Trouble Area
B1453/53 Air mix damper position sensor value does not change even if air conditioning amplifier operates air mix servo motor
  • Air mix servo motor (for driver side COOL)

  • Air conditioning harness

  • Air conditioning amplifier

WIRING DIAGRAM

A01GK5YE09

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1453/53 is not output A
      DTC B1453/53 is output B
      DTC B1453/53 and B1497/97 are output C

    B
    C
    A
  2. READ VALUE USING INTELLIGENT TESTER (AIR MIX SERVO MOTOR TARGET PULSE (for Driver Side COOL))


    1. Use the Data List to check if the servo motor is functioning properly.

      Air Conditioner
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      COOL A/M Servo Targ Pls(D)

      Driver side COOL air mix servo motor target pulse /

      Min.: 0, Max.: 255

      Customized value will be displayed -
      OK
      The display is as specified in the normal condition.
    2. Visually inspect the air mix servo motor (for driver side COOL).


      1. Visually inspect whether the air mix servo motor (for driver side COOL) operates.

        OK
        The air mix servo motor (for driver side COOL) operates.
        Result
        Result Proceed to
        The Data List value changes and the air mix servo motor (for driver side COOL) operates (When troubleshooting according to the DTC output) A
        The Data List value changes and the air mix servo motor (for driver side COOL) operates (When troubleshooting according to Problem Symptoms Table) B
        The Data List value does not change and the air mix servo motor (for driver side COOL) does not operate C
        The Data List value changes, but the air mix servo motor (for driver side COOL) does not operate D

    B
    C
    D
    A
  3. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B1453/53 is not output.

    NG
    OK
  4. CHECK AIR MIX SERVO MOTOR (for Driver Side COOL)


    1. Replace the air mix servo motor Click here.

      Tech Tips

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

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1453/53 is not output.

    NG
    OK
  5. CHECK AIR CONDITIONING HARNESS ASSEMBLY


    1. Replace the air conditioning harness Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      DTC B1453/53 is not output.

    NG
    OK