Nissan Maxima. Manual - part 1045

DIAGNOSIS AND REPAIR WORKFLOW

SEC-5

< BASIC INSPECTION >

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1.

GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when

the incident/malfunction occurred).

>> GO TO 2.

2.

CHECK DTC WITH BCM AND IPDM E/R

1. Check “Self Diagnostic Result” with CONSULT. 

2. Perform the following procedure if DTC is displayed.

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Record DTC and freeze frame data (Print them out with CONSULT.)

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Erase DTC.

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Study the relationship between the cause detected by DTC and the symptom described by the customer.

3. Check related service bulletins for information.
Is any symptom described and any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3.

Symptom is described, DTC is not displayed>>GO TO 4.

Symptom is not described, DTC is displayed>>GO TO 5.

3.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT to the vehicle in “Data Monitor” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT to the vehicle in “Data Monitor ” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

At this time, always keep CONSULT connected to the vehicle, and check diagnostic results in real time.

If two or more DTCs are detected, refer to 

SEC-115, "DTC Inspection Priority Chart"

 and determine trouble

diagnosis order.

NOTE:

• Freeze frame data is useful if the DTC is not detected.

• Perform Component Function Check if DTC Confirmation Procedure is not included in Service Manual. This

simplified check procedure is an effective alternative though DTC cannot be detected during this check.

If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC Confirma-

tion Procedure.

Is DTC detected?

YES

>> GO TO 8.

NO

>> Refer to 

GI-41, "Intermittent Incident"

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6.

PERFORM BASIC INSPECTION

Perform 

SEC-7, "Pre-Inspection for Multi-System Diagnostic"

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Inspection End>>GO TO 7.

7.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to following symptom tables based on the confirmed symptom in step

4, and determine the trouble diagnosis order based on possible causes and symptoms.

• Intelligent Key system/engine start function: 

SEC-158, "Symptom Table"

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• Vehicle security system: 

SEC-159, "Symptom Table"

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SEC-6

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

• Nissan vehicle immobilizer system-NATS: 

SEC-160, "Symptom Table"

.

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 9.

NO

>> Check voltage of related BCM terminals using CONSULT.

9.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair or replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 10.

10.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction has been fully repaired.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that

the symptom is not detected.
Is the inspection result normal?

NO (DTC is detected)>> GO TO 8.

NO (Symptom remains)>>GO TO 6.

YES

>> Inspection End.

PRE-INSPECTION FOR DIAGNOSTIC

SEC-7

< BASIC INSPECTION >

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PRE-INSPECTION FOR DIAGNOSTIC

Pre-Inspection for Multi-System Diagnostic

INFOID:0000000010051896

The engine start function, door lock function, power distribution system and NATS-IVIS/NVIS are closely

related to each other. Narrow down the system in question by performing this inspection to identify which sys-

tem is malfunctioning. For example, the vehicle security system can operate only when the door lock and

power distribution system are operating normally.

1.

CHECK DOOR LOCK OPERATION

Check the door lock for normal operation with the Intelligent Key and door request switch.

Successful door lock operation with the Intelligent Key and request switch indicates that the remote keyless

entry receiver and inside key antenna required for engine start are functioning normally.
Can the door be locked with the Intelligent Key and door request switch?

YES

>> GO TO 2.

NO

>> Refer to 

DLK-183, "Symptom Table"

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2.

CHECK ENGINE STARTING

Check that the engine starts when the Intelligent Key is inserted into the key slot.
Does the engine start?

YES

>> GO TO 3.

NO

>> Refer to 

SEC-158, "Symptom Table"

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3.

CHECK POWER SUPPLY INDICATOR SWITCHING

Press push-button ignition switch and check that the position indicator switches from LOCK, through ACC to

ON.
Is each position indicator illuminating?

YES

>> GO TO 4.

NO

>> Refer to 

PCS-65, "Component Function Check"

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4.

CHECK VEHICLE SECURITY SYSTEM

Check the vehicle security system for normal operation.  Refer to 

SEC-7, "Vehicle Security Operation Check"

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Are the inspection results normal?

YES

>> Inspection End.

NO

>> Repair vehicle security system as necessary.

Vehicle Security Operation Check

INFOID:0000000010051897

1.

INSPECTION START

Turn ignition switch “OFF” and remove Intelligent Key from key slot.

NOTE:

Before starting operation check, open front windows.

>> GO TO 2

2.

CHECK SECURITY INDICATOR LAMP

1. Lock doors using Intelligent Key or mechanical key.

2. Check that security indicator lamp illuminates for 30 seconds.
Does security indicator lamp illuminate?

YES

>> GO TO 3

NO

>> Perform diagnosis and repair. Refer to 

SEC-92, "Component Function Check"

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3.

CHECK ALARM FUNCTION

1. After 30 seconds, security indicator lamp will start to blink.

2. Open any door before unlocking with Intelligent Key or mechanical key, or open trunk lid without Intelligent

Key or mechanical key.

Does alarm function properly?

SEC-8

< BASIC INSPECTION >

PRE-INSPECTION FOR DIAGNOSTIC

YES

>> GO TO 4

NO

>> Check the following.

• The vehicle security system does not phase in alarm mode. Refer to 

SEC-159, "Symptom

Table"

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• Alarm (horn, headlamp and hazard lamp) do not operate. Refer to 

SEC-159, "Symptom Table"

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4.

CHECK ALARM CANCEL OPERATION

Unlock any door or open trunk lid using Intelligent Key or mechanical key.
Does alarm (horn, headlamp and hazard lamp) stop?

YES

>> Inspection End.

NO

>> Check door lock function. Refer to 

SEC-19, "System Description"

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