DTC B1441: Air Mix Damper Control Servo Motor Circuit (Passenger Side); DTC B1446: Air Mix Damper Control Servo Motor Circuit (Driver Side); DTC B1448: FACE Servo Motor Circuit(Passenger Side) [04/2018 -]: Procedure

1. Check for DTCs.

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Result	Proceed to
   Only B1497 is output	A
   B1441, B1442, B1446 and B1448 are output	B
   B1441, B1446 or B1448 is output	C

Result: 

A 

GO TO DTC B1497. Refer to  DTC B1497: Communication Malfunction (Bus Ic) [04/2018 -]  

Result: 

B 

REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY. Refer to  DISASSEMBLY [04/2018 - 08/2019]  , or refer to  DISASSEMBLY [08/2019 -] 

Result: 

C 

See step  2

1. Check that the No. 1 air conditioning radiator damper servo sub-assembly is installed correctly.

   OK

   The No. 1 air conditioning radiator damper servo sub-assembly is installed correctly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY. Refer to  REASSEMBLY [04/2018 - 08/2019]  , or refer to  REASSEMBLY [08/2019 -] 

Result: 

OK 

See step  3

1. Check for a wire harness caught between the links of the motors and dampers.

   OK

   No wire harnesses are caught between the links of the motors and dampers.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REMOVE PINCHED WIRE HARNESS 

Result: 

OK 

See step  4

1. Remove the No. 1 air conditioning radiator damper servo sub-assembly.

   Refer to DISASSEMBLY [04/2018 - 08/2019] , or refer to DISASSEMBLY [08/2019 -]

2. Operate the dampers by hand.

   OK

   The dampers are easily operated by hand.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY. Refer to  DISASSEMBLY [04/2018 - 08/2019]  , or refer to  DISASSEMBLY [08/2019 -] 

Result: 

NG 

REPLACE AIR CONDITIONING RADIATOR ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - 08/2021]  , or refer to  REMOVAL [08/2021 -]