Nissan Pathfinder (2008 year). Manual - part 559

VEHICLE SECURITY SYSTEM

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Condition of Deactivating The System

When one of the following operations is performed, the armed phase is canceled.
• Unlock the doors with keyfob.
• Use the mechanical key to unlock the driver door using the door key cylinder.

Component Parts Location

INFOID:0000000001728844

1.

BCM M18, M19, M20
(view with instrument panel LH re-
moved)

2.

IPDM E/R E122, E123, E124
(view with cover removed)

3.

Horn relay H-1

4.

Main power window and door lock/
unlock switch D7, D8

5.

Front door switch LH B8
RH B108

6.

Front door lock assembly LH (key cylin-
der switch) D14

7.

Power window and door lock/unlock 
switch RH D105

8.

Rear door switch LH B18
RH B116

9.

Back door cinching latch unit (door ajar 
switch) D502
Glass hatch ajar switch D503

10. Horn E3

(behind front combination lamp LH)

11. Combination meter M24

12. Security indicator lamp

ALKIA1270ZZ

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VEHICLE SECURITY SYSTEM

Component Description

INFOID:0000000001689601

Item

Function

BCM

Verifies the received signal from ignition key, then informs ECM whether to allow engine start.

Door switch

Provides the BCM with the status of each monitored door.

Security indicator

Indicates the status of the security system.

IPDM E/R

Controls the horn and headlamps operation.

Horn

Sounds when the vehicle security system is triggered.

DIAGNOSIS SYSTEM (BCM)

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DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000001689602

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

IMMU

IMMU : CONSULT-III Function (BCM - IMMU)

INFOID:0000000001689603

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

DATA MONITOR

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to 

SEC-70, "DTC Index"

.

CAN DIAG SUPPORT MNTR

Monitors the reception status of CAN communication viewed from BCM.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

ECU IDENTIFICATION

The BCM part number is displayed.

CONFIGURATION

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

—

BCM

×

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

Air conditioner

AIR CONDITONER

×

Combination switch

COMB SW

×

Immobilizer

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Vehicle security system

THEFT ALM

×

×

×

Diagnosis mode

Function Description

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from Intelligent Key unit.

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DIAGNOSIS SYSTEM (BCM)

ACTIVE TEST

THEFT ALM

THEFT ALM : CONSULT-III Function (BCM - THEFT ALM)

INFOID:0000000001689604

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

Monitor item 

Content

IGN ON SW

Indicates [ON/OFF] condition of ignition switch in ON position.

KEY ON SW

Indicates [ON/OFF] condition of key switch.

Test item

Description

THEFT IND

This test is able to check security indicator operation [ON/OFF]. 

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

Monitor Item

Condition

IGN ON SW

Indicates [ON/OFF] condition of ignition switch in ON position.

ACC ON SW

Indicates [ON/OFF] condition of ignition switch in ACC position.

PUSH SW

Indicates [ON/OFF] condition of ignition knob switch.

KEY ON SW

Indicates [ON/OFF] condition of key switch.

DOOR SW-DR

Indicates [ON/OFF] condition of front door switch (driver side).

DOOR SW-AS

Indicates [ON/OFF] condition of front door switch (passenger side).

DOOR SW-RR

Indicates [ON/OFF] condition of rear door switch RH.

DOOR SW-RL

Indicates [ON/OFF] condition of rear door switch LH.

BACK DOOR SW

Indicates [ON/OFF] condition of back door switch.

CDL LOCK SW

Indicates [ON/OFF] condition of door lock and unlock switch.

CDL UNLOCK SW

Indicates [ON/OFF] condition of door lock and unlock switch.

Test item

Description

THEFT IND

This test is able to check security indicator operation [ON/OFF]. 

VEHICLE SECURITY HORN

This test is able to check horn operation [ON].

FLASHER

This test is able to check flasher operation [LH/RH/OFF].

Test item

Description

SECURITY ALARM SET

Vehicle security function mode can be changed in this mode.
• ON: Vehicle security function is ON.
• OFF: Vehicle security function is OFF. 

THEFT ALM TRG

The switch which triggered vehicle security system is recorded. This mode can be able to con-
firm and erase the record of vehicle security system. 

U1000 CAN COMM CIRCUIT

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COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000001689605

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to .

LAN-57, "CAN Communication Signal Chart"

DTC Logic

INFOID:0000000001689606

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001689607

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-5, "CAN Communication Control Circuit"

.

NO

>> Refer to 

GI-51, "Intermittent Incident"

.

DTC

CONSULT-III display 

description

DTC Detection Condition

Possible cause

U1000

CAN COMM CIRCUIT

When BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more.

In CAN communication system, any item (or items) 
of the following listed below is malfunctioning.
• Receiving (TCM)
• Receiving (IPDM E/R)
• Receiving (ECM)
• Receiving (METER/M&A)
• Receiving (MULTI AV)

SEC-110

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U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000001689608

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to 

LAN-57, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000001689609

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001689610

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-54, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000001689611

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize BCM. Refer to CONSULT-III Operation Manual.

>> Work end.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

When detecting error during the initial diagnosis of CAN control-
ler of BCM.

BCM

B2190, P1614 NATS ANTENNA AMP.

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B2190, P1614 NATS ANTENNA AMP.

Description

INFOID:0000000001689612

Performs ID verification through BCM and NATS antenna amplifier when ignition key is inserted and ignition
switch turned ON.
Prohibits the start of engine when an unregistered ID of ignition key is used.

DTC Logic

INFOID:0000000001689613

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Insert ignition key into the key cylinder.

2.

Turn ignition switch ON.

3.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Refer to 

SEC-111, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000001689614

1.

CHECK NATS ANTENNA AMP. INSTALLATION

Check NATS antenna amp. installation. Refer to 

SEC-149, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Reinstall NATS antenna amp. correctly.

2.

CHECK NVIS (NATS) IGNITION KEY ID CHIP

Start engine with another registered NATS ignition key.
Does the engine start?

YES

>> • Ignition key ID chip is malfunctioning.

• Replace the ignition key.
• Perform initialization with CONSULT-III.

For initialization, refer to “CONSULT-III Operation Manual”.

NO

>> GO TO 3

3.

CHECK POWER SUPPLY FOR NATS ANTENNA AMP.

1.

Turn ignition switch ON.

2.

Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2190

NATS ANTENNA 
AMP

• Inactive communication between NATS antenna 

amp. and BCM.

• Ignition key is malfunctioning.

• Harness or connectors

(The NATS antenna amp. circuit is 
open or shorted)

• Ignition  key
• NATS antenna amp.
• BCM

P1614

SEC-112

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[WITHOUT INTELLIGENT KEY SYSTEM]

B2190, P1614 NATS ANTENNA AMP.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace fuse or harness.

4.

CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect NATS antenna amp. connector.

3.

Check continuity between NATS antenna amp. connector M21 terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> • Repair or replace harness.

NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-III. For initialization, refer to “CON-
SULT-III Operation Manual”.

5.

CHECK NATS ANTENNA AMP. SIGNAL LINE- 1

1.

Connect NATS antenna amp. connector.

2.

Turn ignition switch ON.

3.

Check voltage between NATS antenna amp. connector M21 ter-
minal 2 and ground with analog tester.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> • Repair or replace harness.

NOTE:
If harness is OK, replace BCM, perform initialization with CONSULT-III. For initialization, refer to
“CONSULT-III Operation Manual”.

1 - Ground

: Battery voltage

LIIA1280E

3 - Ground

: Continuity should exist.

LIIA1283E

LIIA1281E

Terminals

Position of ignition key cylinder

Voltage (V)

(Approx.)

( + )

( - )

2

Ground

Before inserting ignition key

Battery voltage

After inserting ignition key

Pointer of tester should move for approx. 30 seconds, 

then return to battery voltage

Just after turning ignition switch 

ON

Pointer of tester should move for approx. 1 second, then 

return to battery voltage