DTC B1441 Air Mix Door Actuator Circuit Stuck (Passenger)

DTC detecting condition:

Air mix door actuator RH is locked.

Trouble symptom:

Temperature of the passenger's side cannot be adjusted for model with left/right independent air conditioner.

Wiring diagram:

Air conditioning system <Ref. to WIRING DIAGRAM , Air Conditioning System.>

Fig 1: Air Mix Door Actuator RH Circuit Diagram - (Open Circuit)

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK CONNECTOR. Check connecting condition of the A/C Control Module connector and air mix door actuator RH connector. Read the DTC using Subaru Select Monitor. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>	Is DTC B1441 displayed?	Go to step 2 .	Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2 CHECK ACTUATOR. Using the Subaru Select Monitor, change the setting of «Air mix door actuator target open (passenger's side)» from the A/C diagnosis and perform the system operation check. <Ref. to SYSTEM OPERATION CHECK MODE .>	Did the actuator move to the specified target opening angle?	Air mix door actuator circuit is normal.	Go to step 3 .
3 CHECK HARNESS. Disconnect the air mix door actuator RH connector (i175). Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (i175) No. 3 (+) - No. 1 (-):	Is the voltage 4.5 - 5.0 V?	Go to step 4 .	Repair or replace the open, short circuit of the harness.
4 CHECK HARNESS (OPEN CIRCUIT). Disconnect the connector from A/C Control Module. Using a tester, check continuity between terminals. Connector & terminal (i175) No. 5 - (i80) No. 16: (i175) No. 3 - (i80) No. 12: (i175) No. 1 - (i181) No. 18: (i175) No. 7 - (i181) No. 16: (i175) No. 6 - (i181) No. 15:	Is there continuity?	Go to step 5 .	Repair or replace the open circuit of harness.
5 CHECK AIR MIX DOOR ACTUATOR RH. Check the air mix door actuator RH parts. <Ref. to INSPECTION , Air Mix Door Actuator.>	Is the check result OK?	Replace the A/C Control Module. <Ref. to REMOVAL , Control Unit.>	Replace the air mix door actuator RH. <Ref. to REMOVAL , Air Mix Door Actuator.>