AIR CONDITIONING SYSTEM, Diagnostic DTC:B1497/97

DTC Code DTC Name
B1497/97 BUS IC Communication Malfunction

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B1497/97 Communication line error or open

  • Air conditioning harness

  • Rear air conditioning harness

  • Air conditioning amplifier

  • Air mix servo motor (for driver side COOL)

  • Air mix servo motor (for passenger side COOL)

  • Air mix servo motor (for driver side HOT)

  • Air mix servo motor (for passenger side HOT)

  • Air mix servo motor (for driver side front A/C rear air flow)

  • Air mix servo motor (for passenger side front A/C rear air flow)

  • Air outlet servo motor (for driver side FACE)

  • Air outlet servo motor (for passenger side FACE)

  • Air outlet servo motor (for driver side FOOT/DEF)

  • Air outlet servo motor (for passenger side FOOT/DEF)

  • Air outlet servo motor (for driver side front A/C rear air flow)

  • Air outlet servo motor (for passenger side front A/C rear air flow)

  • Air inlet servo motor

  • Cool air bypass servo motor (for driver side)

  • Cool air bypass servo motor (for passenger side)

  • Max hot bypass servo motor (for COOL)

  • Max hot bypass servo motor (for HOT)

  • Rear air outlet servo motor (for LH side)*

  • Rear air outlet servo motor (for RH side)*

  • Rear exhaust mode servo motor (for diffusion)*

  • Rear exhaust mode servo motor (for emission)*

  • HV battery cool down servo motor

  • Harness or connector

WIRING DIAGRAM

A000W1TE02
A000V9OE01
A000Y8GE01
A000UIGE01

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. 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 Inlet Damper Targ Pulse Air inlet damper target pulse

      for LHD Min.: 8, Max.: 31

      for RHD Min.: 7, Max.: 30

      		 -
      Cool Air Bypass Pulse Driver side cool air bypass pulse Min.: 19, Max.: 116 -
      Hot A/M Servo Pulse(D) HOT Air mix servo motor pulse (Driver side) Min.: 87, Max.: 191 -
      Cool A/M Servo Pulse(D) COOL Air mix servo motor pulse (Driver side) Min.: 90, Max.: 194 -
      Hot A/M Servo Pulse(P) HOT Air mix servo motor pulse (Passenger side) Min.: 87, Max.: 191 -
      Cool A/M Servo Pulse(P) COOL Air mix servo motor pulse (Passenger side) Min.: 90, Max.: 194 -
      Face A/O Servo Pulse(D) FACE Air outlet servo motor pulse (Driver side)

      for LHD Min.: 7, Max.: 126

      for RHD Min.: 32, Max.: 151

      		 -
      Foot A/O Servo Pulse(D) FOOT Air outlet servo motor pulse (Driver side)

      for LHD Min.: 86, Max.: 156

      for RHD Min.: 26, Max.: 96

      		 -
      Face A/O Servo Pulse(P) FACE Air outlet servo motor pulse (Passenger side)

      for LHD Min.: 32, Max.: 151

      for RHD Min.: 7, Max.: 126

      		 -
      Foot A/O Servo Pulse(P) FOOT Air outlet servo motor pulse (Passenger side)

      for LHD Min.: 26, Max.: 96

      for RHD Min.: 86, Max.: 156

      		 -
      M/H Bypass Hot Servo Pls M/H bypass HOT servo motor pulse Min.: 18, Max.: 168 -
      M/H Bypass Cool Servo Pls M/H bypass COOL servo motor pulse

      for LHD Min.: 51, Max.: 63

      for RHD Min.: 67, Max.: 78

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

      for LHD Min.: 18, Max.: 103

      for RHD Min.: 43, Max.: 128

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

      for LHD Min.: 43, Max.: 128

      for RHD Min.: 18, Max.: 103

      		 -
      A/O Servo Pulse(F&R D) Air outlet servo motor pulse (Front A/C rear air flow driver side)

      for LHD Min.: 20, Max.: 119

      for RHD Min.: 43, Max.: 142

      		 -
      A/O Servo Pulse(F&R P) Air outlet servo motor pulse (Front A/C rear air flow passenger side)

      for LHD Min.: 43, Max.: 142

      for RHD Min.: 20, Max.: 119

      		 -
      A/O Servo Pulse(Rr D) Air outlet servo motor pulse (Rear driver side)

      for LHD Min.: 6, Max.: 28

      for RHD Min.: 14, Max.: 36

      		 -
      A/O Servo Pulse(Rr P) Air outlet servo motor pulse (Rear passenger side)

      for LHD Min.: 14, Max.: 36

      for RHD Min.: 6, Max.: 28

      		 -
      Cool Air Bypass Pls(P) Cool air bypass pulse (Passenger side)

      for LHD Min.: 6, Max.: 103

      for RHD Min.: 19, Max.: 116

      		 -
      Emission Pulse(R) Emission pulse (Rear) Min.: 8, Max.: 37 -
      Diffuse Pulse(R) Diffuse pulse (Rear) Min.: 8, Max.: 46 -
      Batt Cool Down Servo Targ Pls HV battery cool down servo motor target pulse Min.: 8, Max.: 30 -
      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) A
      Malfunction in servo motor connected to air conditioning harness (segment B) B
      Malfunction in servo motor connected to air conditioning harness (segment C) C
      Malfunction in servo motor connected to rear air conditioning harness D
      All of the servo motors are malfunctioning E

    B

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

    C

    SYSTEM CHECK (AIR CONDITIONING HARNESS (SEGMENT C)) Click here

    D

    SYSTEM CHECK (REAR AIR CONDITIONING HARNESS) Click here

    E

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

  2. SYSTEM CHECK (AIR CONDITIONING HARNESS (SEGMENT A))


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

      Result
      Result Proceed to
      Malfunction in air mix servo motor A
      Malfunction in air inlet servo motor B
      Malfunction in air outlet servo motor (for RHD) C
      Malfunction in cool air bypass servo motor D
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) E

    B

    CHECK AIR INLET SERVO MOTOR Click here

    C

    CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER SIDE FOOT/DEF) Click here

    D

    SYSTEM CHECK (COOL AIR BYPASS SERVO MOTOR) Click here

    E

    CHECK AIR CONDITIONING HARNESS Click here

    A

  3. SYSTEM CHECK (AIR MIX SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the air mix servo motor (for driver side COOL) is malfunctioning A
      Only the air mix servo motor (for passenger side COOL) is malfunctioning B

    B

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

    A

  4. CHECK AIR MIX SERVO MOTOR (FOR DRIVER SIDE COOL)


    1. Replace the air mix servo motor (for driver side COOL) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR MIX SERVO [FOR DRIVER SIDE COOL] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  5. CHECK AIR MIX SERVO MOTOR (FOR PASSENGER SIDE COOL)


    1. Replace the air mix servo motor (for passenger side COOL) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR MIX SERVO MOTOR [FOR PASSENGER SIDE COOL] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  6. CHECK AIR INLET SERVO MOTOR


    1. Replace the air inlet 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 new or a known good one and check that the condition returns to normal.

    2. Check for DTCs.

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

    A

    END (AIR INLET SERVO MOTOR IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  7. CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER SIDE FOOT/DEF)


    1. Replace the air outlet servo motor (for passenger side FOOT/DEF) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR PASSENGER SIDE FOOT/DEF] IS DEFECTIVE

    B

    CHECK AIR CONDITIONING HARNESS Click here

  8. SYSTEM CHECK (COOL AIR BYPASS SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the cool air bypass servo motor (for driver side) is malfunctioning A
      Only the cool air bypass servo motor (for passenger side) is malfunctioning B

    B

    CHECK COOL AIR BYPASS SERVO MOTOR (FOR PASSENGER SIDE) Click here

    A

  9. CHECK COOL AIR BYPASS SERVO MOTOR (FOR DRIVER SIDE)


    1. Replace the cool air bypass servo motor (for driver side) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (COOL AIR BYPASS SERVO MOTOR [FOR DRIVER SIDE] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  10. CHECK COOL AIR BYPASS SERVO MOTOR (FOR PASSENGER SIDE)


    1. Replace the cool air bypass servo motor (for passenger side) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (COOL AIR BYPASS SERVO MOTOR [FOR PASSENGER SIDE] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  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 servo motor A
      Malfunction in air outlet servo motor B
      Malfunction in max hot bypass servo motor (for LHD) C
      Malfunction in all of the servo motors connected to the air conditioning harness (segment B) D

    B

    SYSTEM CHECK (AIR OUTLET SERVO MOTOR) Click here

    C

    CHECK MAX HOT BYPASS SERVO MOTOR (FOR HOT) Click here

    D

    CHECK AIR CONDITIONING HARNESS Click here

    A

  12. SYSTEM CHECK (AIR MIX SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the air mix servo motor (for driver side HOT) is malfunctioning A
      Only the air mix servo motor (for driver side front A/C rear air flow) is malfunctioning B

    B

    CHECK AIR MIX SERVO MOTOR (FOR DRIVER SIDE FRONT A/C REAR AIR FLOW) Click here

    A

  13. CHECK AIR MIX SERVO MOTOR (FOR DRIVER SIDE HOT)


    1. Replace the air mix servo motor (for driver side HOT) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

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

    B

    CHECK AIR CONDITIONING HARNESS Click here

  14. CHECK AIR MIX SERVO MOTOR (FOR DRIVER SIDE FRONT A/C REAR AIR FLOW)


    1. Replace the air mix servo motor (for driver side front A/C rear air flow) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

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

    B

    CHECK AIR CONDITIONING HARNESS Click here

  15. SYSTEM CHECK (AIR OUTLET SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the air outlet servo motor (for driver side FACE) is malfunctioning A
      Only the air outlet servo motor (for driver side FOOT/DEF) is malfunctioning B
      Only the air outlet servo motor (for driver side front A/C rear air flow) is malfunctioning C

    B

    CHECK AIR OUTLET SERVO MOTOR (FOR DRIVER SIDE FOOT/DEF) Click here

    C

    CHECK AIR OUTLET SERVO MOTOR (FOR DRIVER SIDE FRONT A/C REAR AIR FLOW) Click here

    A

  16. CHECK AIR OUTLET SERVO MOTOR (FOR DRIVER SIDE FACE)


    1. Replace the air outlet servo motor (for driver side FACE) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

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

    B

    CHECK AIR CONDITIONING HARNESS Click here

  17. CHECK AIR OUTLET SERVO MOTOR (FOR DRIVER SIDE FOOT/DEF)


    1. Replace the air outlet servo motor (for driver side FOOT/DEF) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR DRIVER SIDE FOOT/DEF] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  18. CHECK AIR OUTLET SERVO MOTOR (FOR DRIVER SIDE FRONT A/C REAR AIR FLOW)


    1. Replace the air outlet servo motor (for driver side front A/C rear air flow) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR DRIVER SIDE FRONT A/C REAR AIR FLOW] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  19. CHECK MAX HOT BYPASS SERVO MOTOR (FOR HOT)


    1. Replace the max hot bypass servo motor (for HOT) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (MAX HOT BYPASS SERVO MOTOR [FOR HOT] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  20. SYSTEM CHECK (AIR CONDITIONING HARNESS (SEGMENT C))


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

      Result
      Result Proceed to
      Malfunction in air mix servo motor A
      Malfunction in air outlet servo motor B
      Malfunction in max hot bypass servo motor C
      Malfunction in all of the servo motors connected to the air conditioning harness (segment C) D

    B

    SYSTEM CHECK (AIR OUTLET SERVO MOTOR) Click here

    C

    SYSTEM CHECK (MAX HOT BYPASS SERVO MOTOR) Click here

    D

    CHECK AIR CONDITIONING HARNESS Click here

    A

  21. SYSTEM CHECK (AIR MIX SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the air mix servo motor (for passenger side HOT) is malfunctioning A
      Only the air mix servo motor (for passenger side front A/C rear air flow) is malfunctioning B

    B

    CHECK AIR MIX SERVO MOTOR (FOR PASSENGER SIDE FRONT A/C REAR AIR FLOW) Click here

    A

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


    1. Replace the air mix servo motor (for passenger side HOT) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR MIX SERVO MOTOR [FOR PASSENGER SIDE HOT] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  23. CHECK AIR MIX SERVO MOTOR (FOR PASSENGER SIDE FRONT A/C REAR AIR FLOW)


    1. Replace the air mix servo motor (for passenger side front A/C rear air flow) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

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

    B

    CHECK AIR CONDITIONING HARNESS Click here

  24. SYSTEM CHECK (AIR OUTLET SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the air outlet servo motor (for passenger side FACE) is malfunctioning A
      Only the air outlet servo motor (for passenger side FOOT/DEF) is malfunctioning (for LHD) B
      Only the air outlet servo motor (for passenger side front A/C rear air flow) is malfunctioning C

    B

    CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER SIDE FOOT/DEF) Click here

    C

    CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER FRONT A/C REAR AIR FLOW) Click here

    A

  25. CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER SIDE FACE)


    1. Replace the air outlet servo motor (for passenger side FACE) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR PASSENGER SIDE FACE] IS DEFECTIVE

    B

    CHECK AIR CONDITIONING HARNESS Click here

  26. CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER SIDE FOOT/DEF)


    1. Replace the air outlet servo motor (for passenger side FOOT/DEF) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR PASSENGER SIDE FOOT/DEF] IS DEFECTIVE

    B

    CHECK AIR CONDITIONING HARNESS Click here

  27. CHECK AIR OUTLET SERVO MOTOR (FOR PASSENGER FRONT A/C REAR AIR FLOW)


    1. Replace the air outlet servo motor (for passenger side front A/C rear air flow) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (AIR OUTLET SERVO MOTOR [FOR PASSENGER FRONT A/C REAR AIR FLOW] IS DEFECTIVE

    B

    CHECK AIR CONDITIONING HARNESS Click here

  28. SYSTEM CHECK (MAX HOT BYPASS SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the max hot bypass servo motor (for HOT) is malfunctioning (for RHD) A
      Only the max hot bypass servo motor (for COOL) is malfunctioning B

    B

    CHECK MAX HOT BYPASS SERVO MOTOR (FOR COOL) Click here

    A

  29. CHECK MAX HOT BYPASS SERVO MOTOR (FOR HOT)


    1. Replace the max hot bypass servo motor (for HOT) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (MAX HOT BYPASS SERVO MOTOR [FOR HOT] IS DEFECTIVE)

    B

    CHECK AIR CONDITIONING HARNESS Click here

  30. CHECK MAX HOT BYPASS SERVO MOTOR (FOR COOL)


    1. Replace the max hot bypass servo motor (for COOL) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (MAX HOT BYPASS SERVO MOTOR [FOR COOL] IS DEFECTIVE)

    B

  31. CHECK AIR CONDITIONING HARNESS


    1. Replace the air conditioning harness Click here.

      Tech Tips

      Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a new or a known good one and check that the condition returns to normal.

    2. Check for DTCs.

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

    A

    END (AIR CONDITIONING HARNESS IS DEFECTIVE)

    B

    CHECK HV BATTERY COOL DOWN SERVO MOTOR Click here

  32. SYSTEM CHECK (REAR AIR CONDITIONING HARNESS)


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

      Result
      Result Proceed to
      Malfunction in rear air outlet servo motor (w/ Rear Cooler) A
      Malfunction in rear exhaust mode servo motor (w/ Rear Cooler) B
      Malfunction in HV battery cool down servo motor C
      Malfunction in all of the servo motors connected to the rear air conditioning harness D

    B

    SYSTEM CHECK (REAR EXHAUST MODE SERVO MOTOR) Click here

    C

    CHECK HV BATTERY COOL DOWN SERVO MOTOR Click here

    D

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

    A

  33. SYSTEM CHECK (REAR AIR OUTLET SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the rear air outlet servo motor (for LH side) is malfunctioning A
      Only the rear air outlet servo motor (for RH side) is malfunctioning B

    B

    CHECK REAR AIR OUTLET SERVO MOTOR (FOR RH SIDE) Click here

    A

  34. CHECK REAR AIR OUTLET SERVO MOTOR (FOR LH SIDE)


    1. Replace the rear air outlet servo motor (for LH side) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (REAR AIR OUTLET SERVO MOTOR [FOR LH SIDE] IS DEFECTIVE)

    B

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

  35. CHECK REAR AIR OUTLET SERVO MOTOR (FOR RH SIDE)


    1. Replace the rear air outlet servo motor (for RH side) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (REAR AIR OUTLET SERVO MOTOR [FOR RH SIDE] IS DEFECTIVE)

    B

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

  36. SYSTEM CHECK (REAR EXHAUST MODE SERVO MOTOR)


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

      Result
      Result Proceed to
      Only the rear exhaust mode servo motor (for diffusion) is malfunctioning A
      Only the rear exhaust mode servo motor (for emission) is malfunctioning B

    B

    CHECK REAR EXHAUST MODE SERVO MOTOR (FOR EMISSION) Click here

    A

  37. CHECK REAR EXHAUST MODE SERVO MOTOR (FOR DIFFUSION)


    1. Replace the rear exhaust mode servo motor (for diffusion) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (REAR EXHAUST MODE SERVO MOTOR [FOR DIFFUSION] IS DEFECTIVE)

    B

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

  38. CHECK REAR EXHAUST MODE SERVO MOTOR (FOR EMISSION)


    1. Replace the rear exhaust mode servo motor (for emission) Click here.

      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (REAR EXHAUST MODE SERVO MOTOR [FOR EMISSION] IS DEFECTIVE)

    B

    CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Click here

  39. CHECK HV BATTERY COOL DOWN SERVO MOTOR


    1. Replace the HV battery cool down servo motor.


      Tech Tips

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

    2. Check for DTCs.

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

    A

    END (HV BATTERY COOL DOWN SERVO MOTOR IS DEFECTIVE)

    B

  40. CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER)

    A000UHLE01

    1. Disconnect the S90 rear air conditioning harness connector.

    2. Disconnect the L76 air conditioning amplifier connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      S90-12 (BRRG) - L76-12 (BRRG) Always Below 1 Ω
      S90-11 (BURR) - L76-13 (BURR)
      S90-10 (BRRB) - L76-14 (BRRB)
      L76-12 (BRRG) - Body ground Always 10 kΩ or higher
      L76-13 (BURR) - Body ground
      L76-14 (BRRB) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  41. CHECK REAR AIR CONDITIONING HARNESS


    1. Replace the rear air conditioning harness.


      Tech Tips

      Since the rear air conditioning harness cannot be inspected while it is removed from the vehicle, replace the rear air conditioning harness with a new or a known good one and check that the condition returns to normal.

    2. Check for DTCs.

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

    A

    END (REAR AIR CONDITIONING HARNESS IS DEFECTIVE)

    B

  42. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A00100ME04
    *1 Rear view of wire harness connector: (to Air Conditioning Amplifier)

    1. Disconnect the L76 air conditioning amplifier connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      L76-6 (+B1) - Body ground Always 11 to 14 V
      L76-7 (+B2) - Body ground

    OK

    REPLACE AIR CONDITIONING AMPLIFIER Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR