Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ACTIVE NOISE CONTROL MICROPHONE CIRCUIT CONTINUITY

Turn ignition switch OFF.
Disconnect BOSE speaker amp. connector B149 and active noise control microphone connectors.

Check continuity between BOSE speaker amp. connector B149 and active noise control microphone connectors.

BOSE speaker amp.		Active noise control microphone		Continuity
Connector	Terminal	Connector	Terminal
B149	69	R20 (front left)	1	Yes
	49		2
	60	R19 (front right)	1
	40		2
	68	R23 (rear)	1
	48		2

Check continuity between BOSE speaker amp. connector B149 and ground.

BOSE speaker amp.		Ground	Continuity
Connector	Terminal
B149	69	-	No
	60
	68

Is inspection result normal?

YES

GO TO 2 .

Repair or replace harness or connectors.

CHECK ACTIVE NOISE CONTROL MICROPHONE SIGNAL

Connect BOSE speaker amp. connector B149 and active noise control microphone connectors.

Check signal between terminals of BOSE speaker amp. connector B149.

BOSE speaker amp. connector B149		Condition	Reference value
(+)	(-)
Terminal	Terminal
69	49	When interior sound is input	Courtesy of NISSAN NORTH AMERICA, INC.
60	40
68	48

Is the inspection result normal?

YES

Replace BOSE speaker amp. Refer to Removal and Installation .

Replace active noise control microphone. Refer to Removal and Installation - Front or Removal and Installation - Rear .