Dtc B1497/97 Bus Ic Communication Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (POWER SOURCE)

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

CHECK VEHICLE TYPE

SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT A])

CHECK COOL AIR BYPASS DAMPER SERVO MOTOR

CHECK REC/FRS DAMPER SERVO MOTOR

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

CHECK AIR MIX SERVO MOTOR

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

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

SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT B])

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

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

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

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

SYSTEM CHECK

CHECK COOL AIR BYPASS DAMPER SERVO MOTOR

CHECK REC/FRS DAMPER SERVO MOTOR

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

CHECK AIR MIX DAMPER SERVO MOTOR

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

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

CHECK VEHICLE TYPE

SYSTEM CHECK (AIR CONDITIONING HARNESS [SEGMENT A])

CHECK REC/FRS DAMPER SERVO MOTOR

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

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

CHECK AIR OUTLET DAMPER SERVO MOTOR

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

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

CHECK AIR OUTLET DAMPER SERVO MOTOR (FOR DEF MODE)

SYSTEM CHECK (SEGMENT B)

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

CHECK COOL AIR BYPASS DAMPER SERVO MOTOR

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

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

CHECK AIR CONDITIONING HARNESS ASSEMBLY

SYSTEM CHECK (REAR AIR CONDITIONING HARNESS)

CHECK REAR AIR MIX DAMPER SERVO MOTOR LH

CHECK REAR AIR MIX DAMPER SERVO MOTOR RH

CHECK REAR AIR OUTLET DAMPER SERVO MOTOR

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

CHECK NO. 2 AIR CONDITIONING HARNESS ASSEMBLY

DTC 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

INSPECTION 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	Go to step 2

A
USE SIMULATION METHOD TO CHECK (Click here)

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE)

1. 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. 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	Go to step 24
C	Go to step 39

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	Go to step 12
C	Go to step 17

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	Go to step 7
C	Go to step 8
D	Go to step 9
E	Go to step 38

A

6.CHECK COOL AIR BYPASS DAMPER SERVO MOTOR

1. Replace the cool air bypass damper servo motor.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 11

A

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

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

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 14
C	Go to step 15
D	Go to step 16
E	Go to step 38

A

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

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

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 19
C	Go to step 20
D	Go to step 21
E	Go to step 38

A

18.CHECK COOL AIR BYPASS DAMPER SERVO MOTOR

1. Replace the cool air bypass damper servo motor.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 23

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 33

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	Go to step 27
C	Go to step 28
D	Go to step 29
E	Go to step 38

A

26.CHECK REC/FRS DAMPER SERVO MOTOR

1. Replace the REC/FRS damper servo motor.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 31
C	Go to step 32

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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	Go to step 35
C	Go to step 36
D	Go to step 37
E	Go to step 38

A

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

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

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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).
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   HINT:

   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	Go to step 38

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.
   

   1. for LHD: Click here
      
   2. for RHD: 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 (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	Go to step 41
C	Go to step 42
D	Go to step 43

A

40.CHECK REAR AIR MIX DAMPER SERVO MOTOR LH

1. Replace the rear air mix damper servo motor LH (Click here).
   

   HINT:

   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	Go to step 43

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).
   

   HINT:

   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	Go to step 43

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).
   

   HINT:

   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	Go to step 43

A
END (REAR AIR OUTLET DAMPER SERVO MOTOR IS DEFECTIVE)

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

1. 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)