Diagnosis Procedure

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 METER CONTROL SWITCH (BCI OFF SWITCH) SIGNAL INPUT

Turn the ignition switch ON.
Check voltage between ADAS control unit harness connector and ground.

Terminals			Condition	Voltage (Approx.)
(+)		(-)
ADAS control unit		Ground	BCI OFF switch
Connector	Terminal
B104	22		Pressed	0 V
			Released	Battery voltage

Is the inspection result normal?

YES

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

GO TO 2.

CHECK METER CONTROL SWITCH (BCI OFF SWITCH)
1. Turn ignition switch OFF.
2. Remove meter control switch (BCI OFF switch).
3. Check meter control switch (BCI OFF switch). Refer to Component Inspection Meter Control Switch (BCI OFF Switch) .
Is the inspection result normal?

YES

GO TO 3.

NO

Replace the meter control switch (BCI OFF switch). Refer to Removal and Installation .

CHECK METER CONTROL SWITCH (BCI OFF SWITCH) CIRCUIT FOR OPEN

Disconnect the ADAS control unit connector.

Check continuity between the ADAS control unit harness connector and meter control switch (BCI OFF switch) harness connector.

ADAS control unit		Meter control switch (BCI OFF switch)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B104	22	M27	6	Yes

Is the inspection result normal?

YES

GO TO 4.

Repair the harnesses or connectors.

CHECK METER CONTROL SWITCH (BCI OFF SWITCH) CIRCUIT FOR SHORT

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

ADAS control unit		Ground	Continuity
Connector	Terminal
B104	22		No

Is the inspection result normal?

YES

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

Repair the harnesses or connectors.