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 ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 SUPPLY VOLTAGE

Disconnect accessory relay-1 and accessory relay-2.

Check voltage between accessory relay-1 connector and ground.

Accessory relay-1

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

J-3

Ignition: OFF

Battery voltage

Check voltage between accessory relay-2 connector and ground.

Accessory relay-2

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

E22

Ignition: OFF

Battery voltage

Is the inspection result normal?

YES

GO TO 2.

Repair or replace harness or connectors.

CHECK ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 CONTROL SIGNAL VOLTAGE

Check voltage between accessory relay-1 connector and ground.

Accessory relay-1		Ground	Condition	Voltage (Approx.)
Connector	Terminal
J-3	2	--	Ignition: OFF	0V
			Ignition: ACC	Battery voltage

Check voltage between accessory relay-2 connector and ground.

Accessory relay-2		Ground	Condition	Voltage (Approx.)
Connector	Terminal
E22	1	--	Ignition: OFF	0V
			Ignition: ACC	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

GO TO 3.

CHECK ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 CONTROL SIGNAL CIRCUIT

Turn the push-button ignition switch OFF.
Disconnect BCM connector M80.

Check continuity between accessory relay-1 connector and BCM connector.

Accessory relay-1		BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
J-3	2	M80	113	Yes

Check continuity between accessory relay-2 connector and BCM connector.

Accessory relay-2		BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E22	1	M80	113	Yes

Check continuity between BCM connector and ground.

BCM		Ground	Continuity
Connector	Terminal
M80	113	--	No

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness or connectors.

CHECK ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 GROUND CIRCUIT

Turn the push-button ignition switch OFF.

Check continuity between accessory relay-1 connector and ground.

Accessory relay-1		Ground	Continuity
Connector	Terminal
J-3	1	--	Yes

Check continuity between accessory relay-2 connector and ground.

Accessory relay-2		Ground	Continuity
Connector	Terminal
E22	2	--	Yes

Is the inspection result normal?

YES

Replace accessory relay.

Repair or replace harness or connectors.