DTC B140B-87: Lost Communication with Rear Air Mix Damper Control Servo Motor LIN Missing Message [11/2023 - ]: Procedure

1. Check for DTCs.

   Body Electrical > Air Conditioner > Trouble Codes 

   Result

   Result	Proceed to
   B1440-88 is output	A
   B1440-88 is not output	B

Result: 

A 

GO TO DTC B1440-88 

Refer to DTC B1440-88: Rear Servo Motor LIN Communication Bus off [11/2023 - ] 

Result: 

B 

REPLACE REAR AIR MIX DAMPER SERVO SUB-ASSEMBLY 

Refer to DISASSEMBLY [12/2019 - ]