AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System), Diagnostic DTC:B1497/97

DTC Code DTC Name
B1497/97 BUS IC Communication Malfunction

DESCRIPTION

The air conditioning harness assembly connects the air conditioning amplifier assembly and each servo motor. The air conditioning amplifier assembly supplies power and sends operation instructions to each servo motor through the air conditioning harness assembly. Each servo motor sends the damper position information to the air conditioning amplifier assembly.

DTC Code DTC Detection Condition Trouble Area
B1497/97 An open or error in the communication line.

  • Cool air bypass damper servo motor

  • REC/FRS damper servo motor

  • Air outlet damper servo motor (for front passenger side mode) (for 4-Zone Type)

  • Front air mix damper servo motor (for front passenger side)

  • Front air mix damper servo motor (for front passenger side rear air flow) (for 4-Zone Type)

  • Air outlet damper servo motor (for driver side mode)

  • Air outlet damper servo motor (for rear seat mode)

  • Front air mix damper servo motor (for driver side)

  • Front air mix damper servo motor (for driver side rear air flow)

  • Air outlet damper servo motor (for DEF mode) (for RHD)

  • Air conditioning harness assembly

  • Rear air outlet damper servo motor (w/ Rear Heater)

  • Rear air mix damper servo motor LH (w/ Rear Heater)

  • Rear air mix damper servo motor RH (w/ Rear Heater)

  • No. 2 air conditioning harness assembly (w/ Rear Heater)

  • Harness or connector (w/ Rear Heater)

  • Air conditioning amplifier assembly

WIRING DIAGRAM

A0159RZE01
A015AZDE01
A0155XZE01
A01584QE01
A015AZDE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK HARNESS AND CONNECTOR (POWER SOURCE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. A0155VCE05

      w/ Rear Heater


      1. Disconnect the E36 amplifier connector.

      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage
        Tester Connection Condition Specified Condition
        E36-6 (+B1) - Body ground Always 11 to 14 V
        E36-7 (+B2) - Body ground
    2. A0158GFE07

      w/o Rear Heater


      1. Disconnect the E81 amplifier connector.

      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage
        Tester Connection Condition Specified Condition
        E81-21 (+B1) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Select the Active Test, using the intelligent tester to generate a control command, and then check that the servo motor operates.

      Tester Display Test Part Control Range Diagnostic Note
      Air Mix Servo Targ Pulse(D) Air mix servo motor pulse (Front A/C D side) Min.: 8, Max.: 90 -
      Air Mix Servo Targ Pulse(P) Air mix servo motor pulse (Front A/C P side) Min.: 8, Max.: 90 -
      Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 9, Max.: 37 -
      Cool Air Bypass Pulse Driver side cool air bypass pulse Min.: 6, Max.: 57 -
      Rear Air Mix Servo Targ Pulse Rear air mix damper servo motor pulse

      for LHD

      Min.: 9, Max.: 54

      for RHD

      Min.: 8, Max.: 53

      		 -
      DEF A/O Servo Pulse(D) Rear air outlet damper servo motor pulse Min.: 7, Max.: 83 -
      Rear A/M Servo Pulse(P) Rear air mix damper servo motor (for front passenger side) pulse

      for LHD

      Min.: 8, Max.: 53

      for RHD

      Min.: 9, Max.: 54

      		 -
      Face A/O Servo Pulse(D) Air outlet servo motor pulse (D side) Min.: 6, Max.: 117 -
      Face A/O Servo Pulse(P) Air outlet servo motor pulse (P side)

      for LHD

      Min.: 6, Max.: 117

      for RHD

      Min.: 9, Max.: 120

      		 -
      A/M Servo Puls(F&R D) Air mix servo motor pulse (Front A/C rear air flow D side)

      for LHD

      Min.: 9, Max.: 54

      for RHD

      Min.: 8, Max.: 53

      		 -
      A/M Servo Puls(F&R P) Air mix servo motor pulse (Front A/C rear air flow P side)

      for LHD

      Min.: 8, Max.: 53

      for RHD

      Min.: 9, Max.: 54

      		 -
      A/O Servo Pulse(F&R D) Air outlet servo motor pulse (Front A/C rear air flow D side) Min.: 9, Max.: 79 -
      A/O Servo Pulse(Rr D) Air outlet servo motor pulse (Rr D side) Min.: 7, Max.: 83 -
      OK
      Arm of the servo motor selected in the Active Test moves smoothly

    2. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in servo motor connected to air conditioning harness (for LHD) A
      Malfunction in servo motor connected to air conditioning harness (for RHD) B
      Malfunction in servo motor connected to air conditioning harness (for Rear) (w/ Rear Heater) C

    B

    CHECK VEHICLE TYPE Click here

    C

    SYSTEM CHECK (REAR AIR CONDITIONING HARNESS) Click here

    A

  4. CHECK VEHICLE TYPE


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in servo motor connected to air conditioning harness (Segment A) (w/ Rear Heater) A
      Malfunction in servo motor connected to air conditioning harness (Segment B) (w/ Rear Heater) B
      Malfunction in servo motor connected to air conditioning harness (w/o Rear Heater) C

    B

    SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT B]) Click here

    C

    SYSTEM CHECK Click here

    A

  5. SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT A])


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in cool air bypass damper servo motor A
      Malfunction in REC/FRS damper servo motor B
      Malfunction in air outlet damper servo motor (for front passenger side mode) C
      Malfunction in air mix damper servo motor D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) E

    B

    CHECK REC/FRS DAMPER SERVO MOTOR Click here

    C

    CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE MODE) Click here

    D

    CHECK AIR MIX SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  6. CHECK COOL AIR BYPASS DAMPER SERVO MOTOR


    1. Replace the cool air bypass damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (COOL AIR BYPASS DAMPER SERVO MOTOR IS DEFECTIVE)

  7. CHECK REC/FRS DAMPER SERVO MOTOR


    1. Replace the REC/FRS damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (REC/FRS DAMPER SERVO MOTOR IS DEFECTIVE)

  8. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE MODE)


    1. Replace the air outlet damper servo motor (for front passenger side mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE MODE] IS DEFECTIVE)

  9. CHECK AIR MIX SERVO MOTOR


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in air mix damper servo motor (front passenger side) A
      Malfunction in front air mix damper servo motor (front passenger side rear air flow) B

    B

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FRONT PASSENGER SIDE REAR AIR FLOW) Click here

    A

  10. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FRONT PASSENGER SIDE)


    1. Replace the air mix damper servo motor (front passenger side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE] IS DEFECTIVE

  11. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FRONT PASSENGER SIDE REAR AIR FLOW)


    1. Replace the front air mix damper servo motor (front passenger side rear air flow).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE REAR AIR FLOW] IS DEFECTIVE)

  12. SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT B])


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in air mix damper servo motor (for driver side mode) A
      Malfunction in air outlet damper servo motor (for rear seat mode) B
      Malfunction in front air mix damper servo motor (for driver side mode) C
      Malfunction in front air mix damper servo motor (for driver side rear air flow) D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) E

    B

    CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR REAR SEAT MODE) Click here

    C

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE) Click here

    D

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE REAR AIR FLOW) Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  13. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DRIVER SIDE MODE)


    1. Replace the air mix damper servo motor (for driver side mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR DRIVER SIDE MODE] IS DEFECTIVE)

  14. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR REAR SEAT MODE)


    1. Replace the air outlet damper servo motor (for rear seat mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR REAR SEAT MODE] IS DEFECTIVE)

  15. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE)


    1. Replace the front air mix damper servo motor (for driver side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR DRIVER SIDE] IS DEFECTIVE)

  16. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE REAR AIR FLOW)


    1. Replace the front air mix damper servo motor (for driver side rear air flow).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR DRIVER SIDE REAR AIR FLOW] IS DEFECTIVE)

  17. SYSTEM CHECK


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in cool air bypass damper servo motor A
      Malfunction in REC/FRS damper servo motor B
      Malfunction in front air outlet damper servo motor (for driver side mode) C
      Malfunction in air mix damper servo motor D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) E

    B

    CHECK REC/FRS DAMPER SERVO MOTOR Click here

    C

    CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DRIVER SIDE MODE) Click here

    D

    CHECK AIR MIX DAMPER SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  18. CHECK COOL AIR BYPASS DAMPER SERVO MOTOR


    1. Replace the cool air bypass damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (COOL AIR BYPASS DAMPER SERVO MOTOR IS DEFECTIVE)

  19. CHECK REC/FRS DAMPER SERVO MOTOR


    1. Replace the REC/FRS damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (REC/FRS DAMPER SERVO MOTOR IS DEFECTIVE)

  20. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DRIVER SIDE MODE)


    1. Replace the front air outlet damper servo motor (for driver side mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR DRIVER SIDE MODE] IS DEFECTIVE)

  21. CHECK AIR MIX DAMPER SERVO MOTOR


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in front air mix damper servo motor (front passenger side) A
      Malfunction in front air mix damper servo motor (for driver side) B

    B

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE) Click here

    A

  22. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE)


    1. Replace the front air mix damper servo motor (for front passenger side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1441/41 is not output A
      DTC B1441/41 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE] IS DEFECTIVE

  23. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE)


    1. Replace the front air mix damper servo motor (for driver side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR DRIVER SIDE] IS DEFECTIVE)

  24. CHECK VEHICLE TYPE


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in servo motor connected to air conditioning harness (Segment A) A
      Malfunction in servo motor connected to air conditioning harness (Segment B) B

    B

    SYSTEM CHECK (SEGMENT B) Click here

    A

  25. SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT A])


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in REC/FRS damper servo motor A
      Malfunction in front air mix damper servo motor (for front passenger side) B
      Malfunction in front air mix damper servo motor (for front passenger side rear air flow) C
      Malfunction in air outlet damper servo motor D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) E

    B

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE) Click here

    C

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE REAR AIR FLOW) Click here

    D

    CHECK AIR OUTLET DAMPER SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  26. CHECK REC/FRS DAMPER SERVO MOTOR


    1. Replace the REC/FRS damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (REC/FRS DAMPER SERVO MOTOR IS DEFECTIVE)

  27. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE)


    1. Replace the front air mix damper servo motor (for front passenger side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1441/41 is not output A
      DTC B1441/41 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE] IS DEFECTIVE

  28. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE REAR AIR FLOW)


    1. Replace the front air mix damper servo motor (for front passenger side rear air flow).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE REAR AIR FLOW] IS DEFECTIVE)

  29. CHECK AIR OUTLET DAMPER SERVO MOTOR


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in air outlet damper servo motor (for front passenger side mode) A
      Malfunction in air outlet damper servo motor (for rear seat mode) B
      Malfunction in air outlet damper servo motor (for DEF mode) C

    B

    CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR REAR SEAT MODE) Click here

    C

    CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DEF MODE) Click here

    A

  30. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR FRONT PASSENGER SIDE MODE)


    1. Replace the air outlet damper servo motor (for front passenger side mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR FRONT PASSENGER SIDE MODE] IS DEFECTIVE)

  31. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR REAR SEAT MODE)


    1. Replace the air outlet damper servo motor (for rear seat mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR REAR SEAT MODE] IS DEFECTIVE)

  32. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DEF MODE)


    1. Replace the air outlet damper servo motor (for DEF mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR DEF MODE] IS DEFECTIVE)

  33. SYSTEM CHECK (SEGMENT B)


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in air outlet damper servo motor (for driver side mode) A
      Malfunction in cool air bypass damper servo motor B
      Malfunction in front air mix damper servo motor (for driver side) C
      Malfunction in air mix damper servo motor (for driver side rear air flow) D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment B) E

    B

    CHECK COOL AIR BYPASS DAMPER SERVO MOTOR Click here

    C

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE) Click here

    D

    CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE REAR AIR FLOW) Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  34. CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DRIVER SIDE MODE)


    1. Replace the air outlet damper servo motor (for driver side mode).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (AIR OUTLET DAMPER SERVO MOTOR [FOR DRIVER SIDE MODE] IS DEFECTIVE)

  35. CHECK COOL AIR BYPASS DAMPER SERVO MOTOR


    1. Replace the cool air bypass damper servo motor.


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (COOL AIR BYPASS DAMPER SERVO MOTOR IS DEFECTIVE)

  36. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE)


    1. Replace the front air mix damper servo motor (for driver side).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR DRIVER SIDE] IS DEFECTIVE)

  37. CHECK FRONT AIR MIX DAMPER SERVO MOTOR (FOR DRIVER SIDE REAR AIR FLOW)


    1. Replace the air mix damper servo motor (for driver side rear air flow).


      Tech Tips

      Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

    END (FRONT AIR MIX DAMPER SERVO MOTOR [FOR DRIVER SIDE REAR AIR FLOW] IS DEFECTIVE)

  38. CHECK AIR CONDITIONING HARNESS ASSEMBLY


    1. Replace the air conditioning harness assembly.


    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    A

    END (AIR CONDITIONING HARNESS ASSEMBLY IS DEFECTIVE)

  39. SYSTEM CHECK (REAR AIR CONDITIONING HARNESS)


    1. According to the test, proceed to the next step.

      Result
      Result Proceed to
      Malfunction in rear air mix damper servo motor LH A
      Malfunction in rear air mix damper servo motor RH B
      Malfunction in rear air outlet damper servo motor C
      Malfunction in all of the servo motors connected to the rear air conditioning harness D

    B

    CHECK REAR AIR MIX DAMPER SERVO MOTOR RH Click here

    C

    CHECK REAR AIR OUTLET DAMPER SERVO MOTOR Click here

    D

    CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

  40. CHECK REAR AIR MIX DAMPER SERVO MOTOR LH


    1. Replace the rear air mix damper servo motor LH 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.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

    END (REAR AIR MIX DAMPER SERVO MOTOR LH IS DEFECTIVE)

  41. CHECK REAR AIR MIX DAMPER SERVO MOTOR RH


    1. Replace the rear air mix damper servo motor RH 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.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

    END (REAR AIR MIX DAMPER SERVO MOTOR RH IS DEFECTIVE)

  42. CHECK REAR AIR OUTLET DAMPER SERVO MOTOR


    1. Replace the rear air outlet damper 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.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/8897 is not output A
      DTC B1497/97 is output B

    B

    CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

    END (REAR AIR OUTLET DAMPER SERVO MOTOR IS DEFECTIVE)

  43. CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER)


    1. A015BMKE05

      Disconnect the K19 No. 2 air conditioning harness connector.

    2. Disconnect the E36 amplifier connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K19-2 (RBUG) - E36-12 (RBUG) Always Below 1 Ω
      K19-3 (RBUS) - E36-13 (RBUS)
      K19-4 (RBBU) - E36-14 (RBBU)
      E36-12 (RBUG) - Body ground Always 10 kΩ or higher
      E36-13 (RBUS) - Body ground
      E36-14 (RBBU) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  44. CHECK NO. 2 AIR CONDITIONING HARNESS ASSEMBLY


    1. Replace the No. 2 air conditioning harness assembly Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1497/97 is not output A
      DTC B1497/97 is output B

    B

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    A

    END (NO. 2 AIR CONDITIONING HARNESS ASSEMBLY IS DEFECTIVE)