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 Diagnostic Work Sheet and reproduce the symptom as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.

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 fail-safe mode. Refer to Fail-safe.

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 THE SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis for “Air suspension”.

Is any DTC detected?

YES>>

Record or print DTC and freeze frame data (FFD). GO TO 4.

NO>>

GO TO 6.

RECHECK THE SYMPTOM

With CONSULT

1. Erase self-diagnostic results for “Air suspension”.

2. Perform DTC confirmation procedures for the error-detected system.

   NOTE:

   If some DTCs are detected at the some time, determine the order for performing the diagnosis based on 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 PART

• Repair or replace error-detected parts.

• Reconnect part or connector after repairing or replacing.

• When DTC is detected, erase self-diagnostic result for “Air suspension”.

>>

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 “Air suspension”.

2. Recheck the symptom and check that the 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		Mileage	km/Mile
Symptom		□ Does not operate ( ) function
		□ Warning lamp for ( ) turns ON
		□ Noise                 □ Vibration
		□ Other ( )
First occurrence		□ Recently □ Other ( )
Frequency of occurrence		□ Always □  Under a certain conditions of □ Sometimes ( time/day)
Climate conditions		□ Irrelevant
	Weather	□ Fine □ Cloud □ Rain □ Snow □ Others ( )
	Temperature	□ Hot □ Warm □ Cool □ Cold □ Temp. [Approx. °C ( °F)]
	Relative humidity	□ High □ Moderate □ Low
Road conditions		□ Urban area □ Suburb area □ Highway □ Mountainous road (uphill or downhill) □ Rough road
Operating condition, etc.		□ Irrelevant □ When engine starts □ During idling □ During driving □ During acceleration □ At constant speed driving □ During deceleration □ During cornering (right curve or left curve) □ When steering wheel is steered (to right or to left)
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