Nissan Pathfinder (2009 year). Manual - part 587

SEC-118

< ON-VEHICLE REPAIR >

[WITH INTELLIGENT KEY SYSTEM]

NATS ANTENNA AMP.

ON-VEHICLE REPAIR

NATS ANTENNA AMP.

Removal and Installation

INFOID:0000000003938499

NOTE:
• If NATS antenna amp. is not installed correctly, NVIS (NATS) system will not operate properly and "SELF-

DIAG RESULTS" on CONSULT-III screen will show "LOCK MODE" or "CHAIN OF IMMU-KEY".

• Initilization is not necessary when only the NATS antenna amp. is replaced with a new one.

REMOVAL

1.

Disconnect the battery negative terminal. Refer to 

PG-76, "Removal and Installation"

.

2.

Remove cluster lid A. Refer to 

IP-10, "Exploded View"

.

3.

Remove the bolt, disconnect the electrical connector, and
remove the NATS antenna amp (1).

INSTALLATION

Installation is in the reverse order of removal.

AWKIA1316ZZ

2009 Pathfinder

INTELLIGENT KEY UNIT

SEC-119

< ON-VEHICLE REPAIR >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

INTELLIGENT KEY UNIT

Removal and Installation

INFOID:0000000003938500

REMOVAL

1.

Disconnect the battery negative terminal. Refer to 

PG-76, "Removal and Installation"

.

2.

Remove the lower glove box. Refer to 

IP-10, "Exploded View"

.

3.

Remove the bolt (A), disconnect the electrical connector (1), and
remove the intelligent key module (2).
•

: Front

INSTALLATION

Installation is in the reverse order of removal.

ALKIA1059ZZ

2009 Pathfinder

SEC-120

< ON-VEHICLE REPAIR >

[WITH INTELLIGENT KEY SYSTEM]

REMOTE KEYLESS ENTRY RECEIVER

REMOTE KEYLESS ENTRY RECEIVER

Removal and Installation

INFOID:0000000004422003

REMOVAL

1.

Disconnect the battery negative cable. Refer to 

PG-76, "Removal and Installation"

.

2.

Remove the front pillar upper finisher (RH). Refer to 

INT-16, "Component"

.

3.

Remove the side ventilator grille (RH). Refer to 

IP-10, "Exploded View"

.

4.

Remove the instrument side finisher. Refer to 

IP-10, "Exploded View"

.

5.

Remove the upper glove box. Refer to 

IP-10, "Exploded View"

.

6.

Remove the bolt (A), disconnect the harness connector (1) and
remove the remote keyless entry receiver (2).

INSTALLATION

Installation is in the reverse order of removal.

AWKIA1480ZZ

2009 Pathfinder

DIAGNOSIS AND REPAIR WORKFLOW

SEC-121

< BASIC INSPECTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000003938503

OVERALL SEQUENCE

DETAILED FLOW

ALKIA0538GB

2009 Pathfinder

SEC-122

< BASIC INSPECTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

DIAGNOSIS AND REPAIR WORKFLOW

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

1.

Check DTC for BCM.

2.

Perform the following procedure if DTC is displayed.

-

Erase DTC.

-

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-III to the vehicle in “DATA MONITOR” mode and check real-time diagnosis results.
Verify relation 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-III to the vehicle in “DATA MONITOR ” mode and check real-time diagnosis results.
Verify relation 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.
If two or more DTCs are detected, refer to 

SEC-175, "DTC Inspection Priority Chart"

 (BCM) and determine

trouble diagnosis order.

Is DTC detected?

YES

>> GO TO 8

NO

>> Refer to 

GI-49, "Intermittent Incident"

.

6.

PERFORM BASIC INSPECTION

Perform Basic Inspection. Refer to 

SEC-192, "Basic Inspection"

.

>> GO TO 7

7.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to Symptom Table based on the confirmed symptom in step 4.

>> GO TO 8

8.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure is described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.

>> GO TO 9

2009 Pathfinder

DIAGNOSIS AND REPAIR WORKFLOW

SEC-123

< BASIC INSPECTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

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 and replace-
ment.

3.

Check DTC. If DTC is displayed, erase it.

>> GO TO 10

10.

FINAL CHECK

When DTC was detected in step 9, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunctions have been fully repaired.
When symptom was described by the customer, refer to the confirmed symptom in step 3 or 4, and check that
the symptom is not detected.

Does the symptom reappear?

YES (DTC is detected)>>GO TO 8
YES (Symptom remains)>>GO TO 6
NO

>> Inspection End.

2009 Pathfinder

SEC-124

< BASIC INSPECTION >

[WITHOUT INTELLIGENT KEY SYSTEM]

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

INFOID:0000000003938504

Refer to the CONSULT-III Operation Manual-NATS.

ECM RE-COMMUNICATING FUNCTION

ECM RE-COMMUNICATING FUNCTION : Description

INFOID:0000000003938505

Performing following procedure can automatically perform re-communication of ECM and BCM, but only when
the ECM has been replaced with a new one (*1).
*1: New one means an ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-III is not necessary)
NOTE:
• When registering new Key IDs or replacing the ECM that is not brand new, refer to CONSULT-III Oper-

ation Manual.

• If multiple keys are attached to the key holder, separate them before work.
• Distinguish keys with unregistered key ID from those with registered ID.

ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement

INFOID:0000000003938506

1.

PERFORM ECM RE-COMMUNICATING FUNCTION

1.

Install ECM.

2.

Using a registered key (*2), turn ignition switch to “ON”.
*2: To perform this step, use the key that has been used before performing ECM replacement.

3.

Maintain ignition switch in “ON” position for at least 5 seconds.

4.

Turn ignition switch to “OFF”.

5.

Start engine.

Can engine be started?

YES

>> Procedure is completed.

NO

>> Initialize control unit. Refer to CONSULT-III Operation Manual.

2009 Pathfinder

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

SEC-125

< FUNCTION DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

FUNCTION DIAGNOSIS

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

System Diagram

INFOID:0000000003938507

System Description

INFOID:0000000003938508

INPUT/OUTPUT SIGNAL CHART

BCM

SYSTEM DESCRIPTION

NATS (Nissan Anti-Theft System) has the following immobilizer functions:
• Engine immobilizer shows high anti-theft performance to prevent engine from starting by other than the

owner.

• Only a key with key ID registered in BCM and ECM can start engine, and shows high anti-theft performance

to prevent key from being copied or stolen.

• Security indicator always flashes with mechanical key removed condition (key switch: OFF) and ignition

knob released condition on LOCK position (ignition knob switch: OFF). 

• Therefore, NATS warns outsiders that the vehicle is equipped with the anti-theft system. Refer to 

SEC-128,

"System Description"

.

• If system detects malfunction, security indicator illuminates when ignition switch is turned to ON position.
• If the owner requires, ignition key ID or mechanical key ID can be registered for up to 5 keys.
• During trouble diagnosis or when the following parts have been replaced, and if ignition key is added, regis-

tration* is required. 

*1

: All keys kept by the owner of the vehicle should be registered with mechanical key.

- ECM
- BCM
- Ignition key
- Remote keyless entry receiver
• NATS trouble diagnosis, system initialization and additional registration of other mechanical key IDs must be

carried out using CONSULT-III.
When NATS initialization has been completed, the ID of the inserted mechanical key or mechanical key IDs
can be carried out.

PIIA1121E

Switch/Input signal

Input signal to BCM

BCM function

Actuator/Output signal

NATS antenna amp.

Key ID

NATS

• Security indicator lamp
• Starter request

ECM

Engine status signal

2009 Pathfinder