Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BUZZER SIGNAL

With CONSULT

Turn ignition ON.
Select "FRONT BUZZER" in "ACTIVE TEST" mode of "SONAR" using CONSULT.

Perform "FRONT BUZZER", and check the signal between sonar control unit harness connector and ground.

Sonar control unit			Test item		Reference value
Connector	Terminals
	(+)	(-)
	Terminal
M76	18	19	FRONT BUZZER	On	Courtesy of NISSAN NORTH AMERICA, INC.
				Off	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace buzzer. Refer to Removal and Installation .

GO TO 2.

CHECK BUZZER SIGNAL CIRCUIT FOR OPEN

Turn ignition switch OFF.
Disconnect sonar control unit harness connector and sonar buzzer harness connector.

Check the continuity between sonar control unit harness connector and buzzer harness connector.

Sonar control unit		Buzzer		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M76	18	M110	3	Existed

Is the inspection result normal?

YES

GO TO 3.

Repair or replace malfunctioning parts.

CHECK BUZZER SIGNAL CIRCUIT FOR SHORT

Check the continuity between sonar control unit harness connector and ground.

Sonar control unit		Ground	Continuity
Connector	Terminal
M76	18		Not existed

Is the inspection result normal?

YES

GO TO 4.

Repair or replace malfunctioning parts.

CHECK BUZZER SIGNAL GROUND CIRCUIT

Check the continuity between sonar control unit harness connector and buzzer harness connector.

Sonar control unit		Buzzer		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M76	19	M110	2	Existed

Is the inspection result normal?

YES

Replace sonar control unit. Refer to Removal and Installation .

Repair or replace malfunctioning parts.