DTC B145B-7F: Front Right Air Mix Damper Control Servo Motor Actuator Stuck Off [11/2021 - ]: Procedure

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

   Refer to REASSEMBLY [11/2021 - 03/2024] , or refer to REASSEMBLY [03/2024 - ]

   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 [11/2021 - 03/2024]  , or refer to  REASSEMBLY [03/2024 - ] 

Result: 

OK 

See step  2

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  3

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

   Refer to DISASSEMBLY [11/2021 - 03/2024] , or refer to DISASSEMBLY [03/2024 - ]

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 [11/2021 - 03/2024]  , or refer to  DISASSEMBLY [03/2024 - ] 

Result: 

NG 

REPAIR OR REPLACE AIR CONDITIONING RADIATOR ASSEMBLY. Refer to  REMOVAL [11/2021 - 03/2022]  , or refer to  REMOVAL [03/2022 - 03/2024]  , or refer to  REMOVAL [03/2024 - ]