Sound Is Not Heard From Front Door Speaker or Tweeter (Base System)

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

HARNESS CHECK

Disconnect audio unit connector and front door speaker and tweeter connector (LH or RH).

Check continuity between audio unit (A) connector terminal and suspect speaker or tweeter (B) connector terminal.

AUDIO UNIT (A) CONNECTOR TERMINAL AND SUSPECT SPEAKER OR TWEETER (B) CONNECTOR TERMINAL

Terminals				Continuity
A		B
Connector	Terminal	Connector	Terminal
M51	2	D3	+	Yes
	3	D3	-
	11	D103	+
	12	D103	-
	2	D12	+
	3	D12	-
	11	D112	+
	12	D112	-

Check continuity between audio unit harness connector terminal and ground.

AUDIO UNIT HARNESS CONNECTOR TERMINAL AND GROUND

Terminals			Continuity
Audio unit		-
Connector	Terminal	-
M51	2	Ground	No
	3
	11
	12

Fig 1: Checking Continuity Between Audio Unit Harness Connector Terminal And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.

NG:

Check connector housings for disconnected or loose terminals.
Repair harness or connector.

FRONT SPEAKER SIGNAL CHECK

Connect audio unit connector and suspect speaker or tweeter connector.
Turn ignition switch to ACC.
Push "POWER" switch.

Check the signal between audio unit harness connector terminals with CONSULT-III or oscilloscope.

FRONT SPEAKER SIGNAL CHECK

Terminals				Condition	Reference signal
(+)		(-)
Connector	Terminal	Connector	Terminal
M51	2	M51	3	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.
M51	11	M51	12	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Signal Between Audio Unit Harness Connector Terminals

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace speaker. Refer to "FRONT DOOR SPEAKER " or "TWEETER ".

NG: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".