Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis and Repair Workflow

Work Flow

DETAILED FLOW

INTERVIEW FROM THE CUSTOMER

Clarify customer complaints before inspection. First of all, perform an interview utilizing reproduce symptoms as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary. Refer to Diagnostic Work Sheet.

CAUTION:

Customers are not professional. Never guess easily like “maybe the customer means that...,” or “maybe the customer mentions this symptom”.

>>

GO TO 2.

CHECK SYMPTOM

Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by protection function. Refer to Protection Function.

CAUTION:

When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

>>

GO TO 3.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis.

Is any DTC detected?

YES>>

Record or print DTC. GO TO 4.

NO>>

GO TO 6.

RECHECK SYMPTOM

With CONSULT

1. Erase self diagnosis result for "EPS/DIRECT ADAPTIVE STEERING 3".

2. Pull the parking brake switch.

   NOTE:

   Check to make sure that the parking brake switch indicator is turned ON.

3. Ignition switch OFF.

4. Get out of the vehicle and close all doors.

5. Wait 65 seconds.

   NOTE:

   • Check to make sure that the parking brake switch indicator is turned OFF.

   • If the rear brake calipers are hot, wait up to an hour until parking brake switch indicator turns OFF. Once parking brake switch indicator turns OFF, move to next step.

6. Start the engine.

   CAUTION:

   Never drive the vehicle.

7. Perform DTC confirmation procedures for the error detected system.

NOTE:

If some DTCs are detected at the same time, determine the order for performing the diagnosis based on. Refer to DTC Inspection Priority Chart.

Is any DTC detected?

YES>>

GO TO 5.

NO >>

Check harness and connectors based on the information obtained by interview. Refer to Intermittent Incident.

REPAIR OR REPLACE ERROR-DETECTED PARTS

• Repair or replace error-detected parts.

• Reconnect part or connector after repairing or replacing.

• When DTC is detected, erase self diagnosis result for "EPS/DIRECT ADAPTIVE STEERING 3".

>>

GO TO 7.

IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS

Estimate error-detected system based on symptom diagnosis and perform inspection.

Can the error-detected system be identified?

YES>>

GO TO 7.

NO >>

Check harness and connectors based on the information obtained by interview. Refer to Intermittent Incident.

FINAL CHECK

With CONSULT

1. Check the reference value for power steering control module.

2. Recheck the symptom and check that symptom is not reproduced on the same conditions.

Is the symptom reproduced?

YES>>

GO TO 3.

NO>>

INSPECTION END

Diagnostic Work Sheet

Description

• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.

Interview sheet sample

Interview sheet
Customer name	MR/MS	Registration number		Initial year registration
		vehicle type		VIN
Storage date		Engine / Traction motor		Mileage	km (Mile)
Symptom		□The steering wheel position (center) is in the wrong position.
		□Warning lamp turns on.
		□Noise  □Vibration
		□Others (                                     )
First occurrence		□Recently  □Others (                          )
Frequency of occurrence		□Always  □Under a certain conditions of  □Sometimes (time(s)/day)
Climate conditions		□Irrelevant
	Weather	□Fine  □Cloud  □Rain  □Snow  □Others (           )
	Temperature	□Hot  □Warm  □Cool  □Cold  □Temperature [Approx.     °C (°F)]
	Relative humidity	□High  □Moderate  □Low
Road conditions		□Urban area  □Suburb area  □High way □Mounting road (uphill or down hill)  □Rough road
Operation conditions, etc.		□Irrelevant □When engine starts  □During idling □During driving  □During acceleration  □At constant speed driving □During deceleration  □During cornering (right curve or left curve) □During steering
Other conditions
Memo