DESCRIPTION
The damper servo sub-assembly (mode damper servo) sends pulse signals to inform the No. 1 air conditioning amplifier assembly of the damper position. The No. 1 air conditioning amplifier assembly activates the motor (normal or reverse) based on the signals to move the air outlet damper to any position, which controls the air outlet changes.
HINT:
Confirm that no mechanical problem is present because this trouble code may be stored when either a damper link or damper is mechanically locked.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1443 |
The air outlet damper position does not change when the No. 1 air conditioning amplifier assembly operates the damper servo sub-assembly (mode damper servo). |
|
WIRING DIAGRAM
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (MODE DAMPER SERVO) |
(a) Use the Data List to check if the damper servo sub-assembly (mode damper servo) is functioning properly (See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Air Outlet Servo Pulse (D) |
Damper servo sub-assembly (mode damper servo) actual pulse / Min.: 0, Max.: 255 |
15 (pulse): FACE 41 (pulse): B/L 65 or 73 (pulse): FOOT 83 or 95 (pulse): F/D 113 (pulse): DEF |
- |
Air Outlet Servo Actu Pulse (D) |
Damper servo sub-assembly (mode damper servo) actual pulse / Min.: 0, Max.: 255 |
15 (pulse): FACE 41 (pulse): B/L 65 or 73 (pulse): FOOT 83 or 95 (pulse): F/D 113 (pulse): DEF |
- |
OK:
The display is as specified in the normal condition column.
Result
Result |
Proceed to |
---|---|
OK (When troubleshooting according to problem symptoms table) |
A |
OK (When troubleshooting according to the DTC) |
B |
NG |
C |
A |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B |
REPLACE NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (MODE DAMPER SERVO) |
(a) Select the Active Test, use the Techstream to generate a control command, and then check that the damper servo sub-assembly (mode damper servo) operates (See page ).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Air Outlet Servo Pulse (D) |
Damper servo sub-assembly (mode damper servo) pulse |
Min.: 0, Max.: 255 |
- |
OK:
Damper servo sub-assembly (mode damper servo) operates normally.
OK |
REPLACE NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
3. |
REPLACE DAMPER SERVO SUB-ASSEMBLY (MODE DAMPER SERVO) |
(a) Replace the damper servo sub-assembly (mode damper servo) (See page ).
HINT:
Since the damper servo sub-assembly (mode damper servo) cannot be inspected while it is removed from the vehicle, replace the damper servo sub-assembly (mode damper servo) with a new or normally functioning one.
|
4. |
CHECK FOR DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
OK:
DTC B1443 is not output.
OK |
END (DAMPER SERVO SUB-ASSEMBLY [MODE DAMPER SERVO] IS FAULTY) |
|
5. |
REPLACE NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY |
(a) Temporarily replace the No. 1 air conditioning amplifier assembly with a new or normally functioning one (See page ).
|
6. |
CHECK FOR DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
OK:
DTC B1443 is not output.
OK |
END (NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY IS FAULTY) |
NG |
REPLACE AIR CONDITIONING HARNESS ASSEMBLY |
Installation
INSTALLATION
PROCEDURE
1. INSTALL NAVIGATION ANTENNA ASSEMBLY
(a) Install the antenna with the 2 screws.
Torque:
2.5 N·m {25 kgf·cm, 22 in·lbf}
(b) Attach the clamp.
2. INSTALL DEFROSTER NOZZLE ASSEMBLY
3. INSTALL NO. 3 HEATER TO REGISTER DUCT
...
Registered Device cannot be Deleted
PROCEDURE
1.
DELETE OPERATION
(a) Check if a registered portable player can be deleted normally.
OK:
Registered portable player can be deleted normally.
OK
END
NG
PROCEED TO ...