Interior Lighting System (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 PUSH-BUTTON IGNITION SWITCH ILLUMINATION OPERATION

CONSULT

Turn the ignition switch ON.
Select ENGINE SW ILLUMI of BCM (INTELLIGENT KEY) active test item.
While operating the test item, check voltage between push-button ignition switch connector M17 terminal 5 and ground.

Terminals			Test item	Voltage (Approx.)
(+)		(-)
Push-button ignition switch		Ground	ENGINE SW ILLUMI
Connector	Terminal
M17	5		ON	5 V
			OFF	0 V

Is the inspection result normal?

YES

GO TO 4.

GO TO 2.

CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION POWER SUPPLY OPEN CIRCUIT

Turn the ignition switch OFF.
Disconnect BCM harness connector M19 and the push-button ignition switch harness connector M17.
Check continuity between BCM harness connector M19 terminal 48 and the push-button ignition switch harness connector M17 terminal 5.

BCM		Push-button ignition switch		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M19	48	M17	5	Yes

Is the inspection result normal?

YES

GO TO 3.

Repair or replace harness or connectors.

CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION POWER SUPPLY SHORT CIRCUIT

Check continuity between BCM harness connector M19 terminal 48 and ground.

BCM		Ground	Continuity
Connector	Terminal
M19	48		No

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness or connectors.

CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION GROUND CIRCUIT

Turn the ignition switch OFF.
Disconnect push-button ignition switch harness connector M17.

Check continuity between push-button ignition switch harness connector M17 terminal 6 and ground.

Push-button ignition switch		Ground	Continuity
Connector	Terminal
M17	6		Yes

Is the inspection result normal?

YES

Replace push-button ignition switch. Refer to Removal and Installation .

GO TO 5.

CHECK PUSH-BUTTON IGNITION SWITCH ILLUMINATION GROUND OPEN CIRCUIT

Disconnect BCM harness connector M80.

Check continuity between BCM harness connector M80 terminal 107 and push-button ignition switch harness connector M17 terminal 6.

Push-button ignition switch		BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M17	6	M80	107	Yes

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness or connectors.