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

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

HARNESS CHECK

Disconnect audio unit connector M43 and suspect speaker or tweeter connector.
Check continuity between audio unit harness connector M43 terminal and suspect speaker or tweeter harness connector terminal.

CONTINUITY SPECIFICATION

Terminals				Continuity
Audio unit		Speaker or tweeter
Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
M43	2(L/W)	D3	+ (L/W)	Yes
	1(L/R)		-(L/R)
	4 (W/B)	D103	+ (W/B)
	3(L/B)		- (L/B)
	2(L/W)	M109	+ (L/W)
	1 (L/R)		-(L/R)
	4 (W/B)	M111	+ (W/B)
	3(L/B)		- (L/B)

Check continuity between audio unit harness connector M43 terminal and ground.

CONTINUITY SPECIFICATION

Terminals			Continuity
Audio unit		-
Connector	Terminal (Wire color)
M43	2 (L/W)	Ground	No
	1 (L/R)
	4 (W/B)
	3 (L/B)

OK or NG

OK: GO TO 2.
NG:
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
Fig 1: Checking Continuity Between Audio Unit Harness Connector Terminals & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
FRONT SPEAKER SIGNAL CHECK
1. Connect audio unit connector and front speaker or tweeter connector.
2. Turn ignition switch to ACC.
3. Push "POWER" switch.
4. Check the signal between audio unit harness connector terminal and ground with CONSULT-II or oscilloscope.
  
  Fig 2: Voltage Signal Graph
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Voltages Between Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Replace speaker. Refer to "REMOVAL AND INSTALLATION OF FRONT DOOR SPEAKER " or Removal and Installation of Front Tweeter .
2. NG: Replace audio unit. Refer to "REMOVAL AND INSTALLATION FOR AUDIO UNIT ".