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.

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

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

  • Air outlet damper servo motor (for front passenger side mode)

  • Cool air bypass damper servo motor

  • REC/FRS damper servo motor

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

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

  • Air conditioning harness assembly

  • Rear air outlet damper Servo Motor

  • Rear air mix damper servo motor LH

  • Rear air mix damper servo motor RH

  • No. 2 air conditioning harness assembly

  • Harness or connector

  • Air conditioning amplifier assembly

WIRING DIAGRAM

A01EO2OE02
A01ENP6E03
A01EQABE02
A01ENP6E04

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

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)


    1. A01ERP4E05

      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

    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.

      Air Conditioner
      Tester Display Test Part Control Range Diagnostic Note
      Air Mix Servo Targ Pulse(D) Air mix servo motor pulse (Front A/C driver side) Min.: 8, Max.: 90 -
      Air Mix Servo Targ Pulse(P) Air mix servo motor pulse (Front A/C passenger side) Min.: 8, Max.: 90 -
      Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 9, Max.: 37 -
      Cool Air Bypass Pulse Cool air bypass pulse Min.: 6, Max.: 57 -
      Rear Air Mix Servo Targ Pulse Rear air mix servo motor pulse Min.: 8, Max.: 54 -
      Face A/O Servo Pulse(D) Air outlet servo motor pulse (Driver side) Min.: 6, Max.: 117 -
      Face A/O Servo Pulse(P) Air outlet servo motor pulse (Passenger side)

      for LHD


      • Min.: 6

      • Max.: 117

      for RHD


      • Min.: 9

      • Max.: 120

      		 -
      DEF A/O Servo Pulse (D) DEF air outlet servo motor pulse Min.: 6, Max.: 117 -
      A/M Servo Puls(F&R D) Air mix servo motor pulse (Front A/C rear air flow driver side)

      for LHD


      • Min.: 13

      • Max.: 41

      for RHD


      • Min.: 5

      • Max.: 33

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

      for LHD


      • Min.: 5

      • Max.: 33

      for RHD


      • Min.: 13

      • Max.: 41

      		 -
      A/O Servo Pulse(F&R D) Air outlet servo motor pulse (Front A/C rear air flow driver side) Min.: 9, Max.: 79 -
      A/O Servo Pulse(Rr D) Air outlet servo motor pulse (Rear driver 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 (segment A) (for LHD) A
      Malfunction in servo motor connected to air conditioning harness (segment B) (for LHD) B
      Malfunction in servo motor connected to air conditioning harness (segment A) (for RHD) C
      Malfunction in servo motor connected to air conditioning harness (segment B) (for RHD) D
      Malfunction in servo motor connected to No. 2 air conditioning harness E

    B

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

    C

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

    D

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

    E

    SYSTEM CHECK (NO. 2 AIR CONDITIONING HARNESS) Click here

    A

  4. 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 COOL AIR BYPASS DAMPER SERVO MOTOR Click here

    C

    CHECK REC/FRS DAMPER SERVO MOTOR Click here

    D

    CHECK AIR MIX SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  5. 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)

  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 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) Click here

    A

  9. 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)

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

    C

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

    D

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

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  12. 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)

  13. 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)

  14. 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)

  15. 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)

  16. 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 mode) B
      Malfunction in front air mix damper servo motor (for 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 SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  17. 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)

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


    1. Replace the 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 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)

  19. 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)

  20. CHECK AIR OUTLET 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

  21. 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)

  22. 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)

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


    1. Replace the air outlet damper servo motor (for DEF mode) 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 AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

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

  24. SYSTEM CHECK (AIR CONDITIONING HARNESS [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 front air mix damper servo motor (for driver side) B
      Malfunction in air mix damper servo motor (for driver side rear air flow) C
      Malfunction in cool air bypass damper servo motor D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment B) E

    B

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

    C

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

    D

    CHECK COOL AIR BYPASS DAMPER SERVO MOTOR Click here

    E

    CHECK AIR CONDITIONING HARNESS ASSEMBLY Click here

    A

  25. 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)

  26. 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)

  27. 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)

  28. 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)

  29. 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)

  30. SYSTEM CHECK (NO. 2 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

  31. 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)

  32. 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)

  33. 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)

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


    1. A01EOI2E03

      Disconnect the K19 No. 2 air conditioning harness assembly 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

  35. 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)