DTC B1448: FACE Servo Motor Circuit (Passenger Side) [12/2019 - 10/2022]: Procedure

1. Check for DTCs.

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1497 is not output	A
   DTC B1497 is output	B

Result: 

B 

GO TO DTC B1497. Refer to  DTC B1497: Communication Malfunction (Bus Ic) [12/2019 - 10/2022] 

Result: 

A 

See step  2

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

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REINSTALL NO. 1 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY. Refer to  REASSEMBLY [12/2019 - 10/2022] 

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 [12/2019 - 10/2022]

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 [12/2019 - 10/2022] 

Result: 

NG 

REPAIR OR REPLACE AIR CONDITIONING RADIATOR ASSEMBLY