Driver Assistance System (DTC/Circuit Diagnosis)

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WARNING BUZZER SIGNAL CIRCUIT FOR OPEN

Turn ignition switch OFF.
Disconnect the warning buzzer connector.
Disconnect the ADAS control unit 2 connector.

Check continuity between the ADAS control unit 2 harness connector and warning buzzer harness connector.

ADAS control unit 2		Warning buzzer		Continuity
Connector	Terminal	Connector	Terminal
M198	12	M199	1	Yes
	24		2

Is the inspection result normal?

YES

GO TO 2.

Repair the harnesses or connectors.

CHECK WARNING BUZZER SIGNAL CIRCUIT FOR SHORT

Check continuity between the ADAS control unit 2 harness connector and ground.

ADAS control unit 2		Ground	Continuity
Connector	Terminal
M198	12		No
	24

Is the inspection result normal?

YES

GO TO 3.

Repair the harnesses or connectors.

CHECK WARNING BUZZER SIGNAL

Connect the warning buzzer connector and ADAS control unit 2 connector.
Turn ignition switch ON.
Select the active test of "ICC/ADAS 2" with CONSULT.

Check waveform between the ADAS control unit 2 harness connector and ground.

ADAS control unit 2			Condition	Voltage (Approx.)
Connector	Terminal
	+	-
M198	12	24	At "ADAS buzzer 2" test of "Active test"	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

Replace the warning buzzer. Refer to Removal and Installation .

Replace the ADAS control unit 2. Refer to Removal and Installation .