DTC B14B3-87: Lost Communication with Rear Panel LIN Missing Message [11/2023 - ]: Description

The No. 2 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
B14B3-87	Lost Communication with Rear Panel LIN Missing Message	Diagnosis Condition: Ignition switch ON Malfunction: Error or open in communication line between air conditioning amplifier assembly and No. 2 air conditioning control assembly Detection Time: Continuously for 10 seconds or more	Harness or connector No. 2 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

B14B3-87

Lost Communication with Rear Panel LIN Missing Message

Diagnosis Condition:

Malfunction:

Error or open in communication line between air conditioning amplifier assembly and No. 2 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 No. 2 air conditioning control assembly	◦	-
Malfunction	Open in communication line between air conditioning amplifier assembly and No. 2 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.