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*2

  • 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)*1

  • 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)*1

  • 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)*2

  • Rear air outlet servo motor (for RH side)*2

  • Rear exhaust mode servo motor (for diffusion)*2

  • Rear exhaust mode servo motor (for emission)*2

  • Harness and connector

WIRING DIAGRAM

A01GL5DE07
A01GMIUE11
A01GJSXE05
A01GMA2E02

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING TECHSTREAM


    1. Select the Active Test, using the Techstream 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 Min.: 0, Max.: 255 -
      Cool Air Bypass Pulse Driver side cool air bypass pulse Min.: 0, Max.: 255 -
      Hot A/M Servo Pulse(D) HOT Air mix servo motor pulse (Driver side) Min.: 0, Max.: 255 -
      Cool A/M Servo Pulse(D) COOL Air mix servo motor pulse (Driver side) Min.: 0, Max.: 255 -
      Hot A/M Servo Pulse(P) HOT Air mix servo motor pulse (Passenger side) Min.: 0, Max.: 255 -
      Cool A/M Servo Pulse(P) COOL Air mix servo motor pulse (Passenger side) Min.: 0, Max.: 255 -
      Face A/O Servo Pulse(D) FACE Air outlet servo motor pulse (Driver side) Min.: 0, Max.: 255 -
      Foot A/O Servo Pulse(D) FOOT Air outlet servo motor pulse (Driver side) Min.: 0, Max.: 255 -
      Face A/O Servo Pulse(P) FACE Air outlet servo motor pulse (Passenger side) Min.: 0, Max.: 255 -
      Foot A/O Servo Pulse(P) FOOT Air outlet servo motor pulse (Passenger side) Min.: 0, Max.: 255 -
      M/H Bypass Hot Servo Pls M/H bypass HOT servo motor pulse Min.: 0, Max.: 255 -
      M/H Bypass Cool Servo Pls M/H bypass COOL servo motor pulse Min.: 0, Max.: 255 -
      A/M Servo Pulse(F&R D) Air mix servo motor pulse (Front A/C rear air flow driver side) Min.: 0, Max.: 255 -
      A/M Servo Pulse(F&R P) Air mix servo motor pulse (Front A/C rear air flow passenger side) Min.: 0, Max.: 255 -
      A/O Servo Pulse(F&R D) Air outlet servo motor pulse (Front A/C rear air flow driver side) Min.: 0, Max.: 255 -
      A/O Servo Pulse(F&R P) Air outlet servo motor pulse (Front A/C rear air flow passenger side) Min.: 0, Max.: 255 -
      A/O Servo Pulse(Rr D) Air outlet servo motor pulse (Rear driver side) Min.: 0, Max.: 255 -
      A/O Servo Pulse(Rr P) Air outlet servo motor pulse (Rear passenger side) Min.: 0, Max.: 255 -
      Cool Air Bypass Pls(P) Cool air bypass pulse (Passenger side) Min.: 0, Max.: 255 -
      Emission Pulse(R) Emission pulse (Rear) Min.: 0, Max.: 255 -
      Diffuse Pulse(R) Diffuse pulse (Rear) Min.: 0, Max.: 255 -
      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

      • *: w/ Rear Cooler


    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 (POWER SOURCE) 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 cool air bypass servo motor C
      Malfunction in all of the servo motors connected to the air conditioning harness (segment A) D

    B

    CHECK AIR INLET SERVO MOTOR Click here

    C

    SYSTEM CHECK (COOL AIR BYPASS SERVO MOTOR) Click here

    D

    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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

    END (AIR INLET SERVO MOTOR IS DEFECTIVE)

  7. 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

  8. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  9. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  10. 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 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

  11. 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

      • *: w/ 4-ZONE Switch


    B

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

    A

  12. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  13. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  14. 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

  15. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  16. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  17. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  18. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  19. 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

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

    D

    CHECK AIR CONDITIONING HARNESS Click here

    A

  20. 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 RH SIDE FRONT A/C REAR AIR FLOW) Click here

    A

  21. CHECK AIR MIX SERVO MOTOR (FOR RH 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  22. CHECK AIR MIX SERVO MOTOR (FOR RH 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  23. 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 B
      Only the air outlet servo motor (for passenger side front A/C rear air flow) is malfunctioning* C

      • *: w/ 4-ZONE switch


    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

  24. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  25. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  26. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  27. 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

    B

    CHECK AIR CONDITIONING HARNESS Click here

    A

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

  28. 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

    B

    CHECK HARNESS AND CONNECTOR (POWER SOURCE) Click here

    A

    END (AIR CONDITIONING HARNESS IS DEFECTIVE)

  29. SYSTEM CHECK (REAR AIR CONDITIONING HARNESS)


    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
      Only the rear exhaust mode servo motor (for diffusion) is malfunctioning C
      Only the rear exhaust mode servo motor (for emission) is malfunctioning D
      Malfunction in all of the servo motors connected to the rear air conditioning harness E

    B

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

    C

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

    D

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

    E

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

    A

  30. 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

    B

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

    A

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

  31. 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

    B

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

    A

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

  32. 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

    B

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

    A

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

  33. 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

    B

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

    A

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

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

    A01GL01E01

    1. Disconnect the S28 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
      S28-6 (BRRG) - L76-12 (BRRG) Always Below 1 Ω
      S28-7 (BURR) - L76-13 (BURR) Always Below 1 Ω
      S28-8 (BRRB) - L76-14 (BRRB) Always Below 1 Ω
      L76-12 (BRRG) - Body ground Always 10 kΩ or higher
      L76-13 (BURR) - Body ground Always 10 kΩ or higher
      L76-14 (BRRB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  35. CHECK REAR AIR CONDITIONING HARNESS


    1. Replace the rear air conditioning harness Click here.

      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

    B

    CHECK HARNESS AND CONNECTOR (POWER SOURCE) Click here

    A

    END (REAR AIR CONDITIONING HARNESS IS DEFECTIVE)

  36. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A01GI7ME09

    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 Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE AIR CONDITIONING AMPLIFIER Click here