Nissan Armada 2025-2026 Service and Repair Manual: Diagnosis and Repair Work Flow

Work Flow

DETAILS OF TROUBLE DIAGNOSIS FLOWCHART

COLLECT THE INFORMATION FROM THE CUSTOMER

It is also important to clarify customer concerns before starting the inspection. First of all, perform an interview utilizing diagnostic work sheet and reproduce the symptom as well as fully understand it. Depending on the situations, drive the vehicle with the customer and check the symptom. 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 the 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 SELF-DIAGNOSIS (1)

With CONSULT

Perform self-diagnosis.

Is DTC detected?

YES>>

Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.

NO>>

GO TO 7.

PERFORM SELF-DIAGNOSIS (2)

With CONSULT

1. Ignition switch OFF to ON without depressing the brake pedal.

   CAUTION:

   Never start the engine.

2. Ignition switch OFF and disconnect CONSULT from data link connector.

3. Get out of the vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

   CAUTION:

   Never operate the vehicle.

4. Ignition switch ON without depressing the brake pedal.

   CAUTION:

   Never start the engine.

5. Erase self-diagnosis result of “BRAKE”.

6. Ignition switch OFF and disconnect CONSULT from data link connector.

7. Get out of the vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

   CAUTION:

   Never operate the vehicle.

8. Ignition switch ON without depressing the brake pedal.

   CAUTION:

   Never start the engine.

9. Perform self-diagnosis for “BRAKE”.

Is DTC detected?

YES>>

Record or print self-diagnosis results. GO TO 5.

NO>>

GO TO 7.

RECHECK SYMPTOM

With CONSULT

1. Erase self-diagnosis results from the memory.

2. Ignition switch OFF and disconnect CONSULT from data link connector.

3. Get out of the vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

   CAUTION:

   Never operate the vehicle.

4. Perform DTC reproduction procedures for the system that is malfunctioning.

   NOTE:

   When multiple DTCs are detected, Refer to DTC Inspection Priority Chart. And then determine the order for performing the diagnosis.

Is DTC detected?

YES>>

GO TO 6.

NO>>

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

REPAIR OR REPLACE ERROR-DETECTED PART

1. Repair or replace the part that is malfunctioning. Reconnect part or connector after repairing or replacing. Erase DTC from the memory when DTC is detected.

2. Ignition switch OFF and disconnect CONSULT from data link connector.

3. Get out of the vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

   CAUTION:

   Never operate the vehicle.

>>

GO TO 7.

IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS

Estimate which system is malfunctioning according to the possible symptoms based on symptom diagnosis and perform check.

Can the malfunctioning part be identified?

YES>>

GO TO 8.

NO>>

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

FINAL CHECK

With CONSULT

1. Check the reference value for “BRAKE”. Refer to Values On The Diagnosis Tool.

2. Perform the operation check. Check that the symptom is not reproduced under the same conditions as when the symptom is reproduced before.

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		Traction motor		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(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 □ Highway □ Mountainous road (uphill or downhill) □ Rough road
Operating condition, etc.		□Irrelevant □When traction motor 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)
Other conditions
Memo