Diagnosis Procedure

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

CHECK COMPONENT PARTS OPERATION FOR AXLE DISCONNECT DEVICE
1. Set the vehicle to 4WD mode.
2. Lift up the vehicle.
3. Rotate the right side front wheel by hand while holding the opposite front one wheel lightly.
Does the both front wheel rotate?

YES

GO TO 2 .

NO

Repair component parts of axle disconnect device for mechanical malfunction (mechanical engagement of clutch is not possible). Refer to Disassembly and Assembly .

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND AXLE DISCONNECT DEVICE ACTUATOR

Turn the ignition switch OFF.
Disconnect transfer control unit harness connector and axle disconnect device actuator harness connector.

Check the continuity between transfer control unit harness connector and axle disconnect device actuator harness connector.

Transfer control unit		Axle disconnect device actuator		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E142	25	E251	3	Yes

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

Transfer control unit		-	Continuity
Connector	Terminal
E142	25	Ground	No

Is the inspection result normal?

YES

GO TO 3 .

Repair or replace error-detected parts.

PERFORM SELF-DIAGNOSIS
After connecting each harness connector, perform DTC confirmation procedure again. Refer to DTC Description .

Is DTC "P186A" detected again?

YES

Replace axle disconnect device actuator. Refer to Exploded View .

NO

Inspection End.