DTC B1408-87: Lost Communication with Rear Air Outlet Damper Control Servo Motor LIN Missing Message [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The No. 2 air conditioning harness assembly connects the air conditioning amplifier assembly and rear mode damper servo sub-assembly.

The rear mode damper servo sub-assembly sends damper position information to the air conditioning amplifier assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	DTC Output from	Priority
B1408-87	Lost Communication with Rear Air Outlet Damper Control Servo Motor LIN Missing Message	Diagnosis Condition: Ignition switch ON Malfunction: Error or open in communication line between air conditioning amplifier assembly and rear mode damper servo sub-assembly Detection Time: Continuously for 10 seconds or more	Rear mode damper servo sub-assembly	Memorized	Air Conditioner	B

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

DTC Output from

Priority

B1408-87

Lost Communication with Rear Air Outlet Damper Control Servo Motor LIN Missing Message

Diagnosis Condition:

Malfunction:

Error or open in communication line between air conditioning amplifier assembly and rear mode damper servo sub-assembly

Detection Time:

Rear mode damper servo sub-assembly

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 rear mode damper servo sub-assembly	◦	-
Malfunction	Open in communication line between air conditioning amplifier assembly and rear mode damper servo sub-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.