DTC B14B2-87: Lost Communication with Front Panel LIN Missing Message [11/2023 - ]: Description

The air conditioning control assembly communicates with the air conditioning amplifier assembly via LIN communication.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	DTC Output from	Priority
B14B2-87	Lost Communication with Front Panel LIN Missing Message	Diagnosis Condition: Ignition switch ON Malfunction: Error or open in communication line between air conditioning amplifier assembly and air conditioning control assembly Detection Time: Continuously for 10 seconds or more	Harness or connector Air conditioning control assembly Air conditioning amplifier assembly	Memorized	Air Conditioner	A

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

DTC Output from

Priority

B14B2-87

Lost Communication with Front Panel LIN Missing Message

Diagnosis Condition:

Malfunction:

Error or open in communication line between air conditioning amplifier assembly and air conditioning control assembly

Detection Time:

Memorized

Air Conditioner

DTC DETECTION CONDITION COMBINATION TABLE

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Ignition switch ON	◦	◦
Malfunction	Error in communication line between air conditioning amplifier assembly and air conditioning control assembly	◦	-
Malfunction	Open in communication line between air conditioning amplifier assembly and air conditioning control assembly	-	◦
Detection Time		Continuously for 10 seconds or more	Continuously for 10 seconds or more
Trip Count		1 trip	1 trip

HINT:

If the conditions of either of these patterns are detected, a DTC will be stored.