DESCRIPTION
The air mix control servo motor (for front passenger side) sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on the signals to move the air mix damper (for front passenger side) to any position. As a result, the air mix damper (for front passenger side) varies the mixture of hot air from the heater core and cold air from the evaporator so that the temperature of the air blowing toward the front passenger side is as requested.
Tech Tips
Confirm that no mechanical problem is present because this trouble code can be stored when either a damper link or damper is mechanically locked.
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
B1441/41 | The air mix damper position does not change even if the air conditioning amplifier assembly operates the air mix control servo motor (for front passenger side). |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
CHECK FOR DTC
Clear the DTCs Click here.
Check for DTCs Click here.
Result | Proceed to |
---|---|
DTC B1441/41 is not output | A |
DTC B1441/41 is output | B |
DTC B1441/41 and B1497/97 are output | C |
B |
READ VALUE USING INTELLIGENT TESTER Click here |
C |
GO TO DTC B1497/97 Click here |
A |
USE SIMULATION METHOD TO CHECK Click here
READ VALUE USING INTELLIGENT TESTER
Use the Data List to check if the air mix control servo motor is functioning properly.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
---|---|---|---|
Air Mix Servo Targ Pulse (P) | Air mix control servo motor (for front passenger side) target pulse / Min.: 0, Max.: 255 | for LHD:
for RHD:
|
- |
OK |
---|
The display is as specified in the normal condition column. |
Result | Proceed to |
---|---|
OK (When troubleshooting according to the DTC) | A |
OK (When troubleshooting according to Problem Symptoms Table) | B |
NG | C |
B |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here |
C |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here |
A |
CHECK AIR MIX CONTROL SERVO MOTOR (FOR FRONT PASSENGER SIDE)
Replace the air mix control servo motor (for front passenger side) Click here.
Tech Tips
Since the air mix control servo motor (for front passenger side) cannot be inspected while it is removed from the vehicle, replace the air mix control servo motor with a new or normally functioning one.
Clear the DTCs Click here.
Check for DTCs Click here.
OK |
---|
DTC B1441 is not output. |
B |
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY Click here |
A |
END (AIR MIX CONTROL SERVO MOTOR [FOR FRONT PASSENGER SIDE] IS FAULTY)
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
Temporarily replace the air conditioning amplifier with a new or normally functioning one Click here.
Clear the DTCs Click here.
Check for DTCs Click here.
OK |
---|
DTC B1441 is not output. |
B |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here |
A |
END (AIR CONDITIONING HARNESS ASSEMBLY IS FAULTY)