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 SOUND SIGNAL CIRCUITS FOR OPEN OR SHORT TO GROUND

Turn ignition switch OFF.
Disconnect BOSE speaker amp. connector B109 and suspect tweeter connector.

Check the continuity between BOSE speaker amp. connector B109 and suspect tweeter connector.

BOSE speaker amp.		Tweeter		Continuity
Connector	Terminal	Connector	Terminal
B109	16	M143 (LH)	1	Yes
	29		2
	31	M144 (RH)	1
	30		2

Check the continuity between BOSE speaker amp. connector B109 and ground.

BOSE speaker amp.		Continuity
Connector	Terminal			Ground
B109	16	-	No
	29
	31
	30

Is the inspection result normal?

YES

GO TO 2 .

Repair or replace harness or connectors.

CHECK SOUND SIGNAL CIRCUITS FOR SHORT

Check the continuity between the terminals of BOSE speaker amp. connector B109 for the suspect tweeter.

BOSE speaker amp.			Tweeter	Continuity
Connector	Terminal
B109	16	29	LH	No
	31	30	RH

Is the inspection result normal?

YES

GO TO 3 .

Repair or replace harness or connectors.

CHECK SOUND SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY

Turn ignition switch ON.

Check the voltage between BOSE amp. connector B109 and ground for the suspect tweeter.

BOSE speaker amp.		Ground	Tweeter	Voltage
Connector	Terminal
B109	16	-	LH	0 V
	29
	31		RH
	30

Is the inspection result normal?

YES

Replace tweeter. Refer to Removal and Installation .

Repair or replace harness or connectors.