DTC B14B5: Lost Communication with Front Seat Temperature Adjustment Switch LIN [04/2018 - ]: Description

The seat heater switch (radio and display receiver assembly) communicates with the air conditioning amplifier assembly via LIN communication.

If the LIN communication system is malfunctioning, the air conditioning amplifier assembly will not operate even if the seat heater switch (radio and display receiver assembly) is operated.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B14B5	Lost Communication with Front Seat Temperature Adjustment Switch LIN	Lost communication with the seat heater switch (radio and display receiver assembly)	Seat heater switch (radio and display receiver assembly) Air conditioning amplifier assembly Wire harness or connector ECU-IG1 NO. 4 fuse