Nissan Pathfinder (2010 year). Manual - part 143

DIAGNOSIS SYSTEM (INTELLIGENT KEY UNIT)

DLK-43

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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DIAGNOSIS SYSTEM (INTELLIGENT KEY UNIT)

CONSULT-III Function (INTELLIGENT KEY)

INFOID:0000000005259865

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with Intelligent Key unit.

SELF-DIAG RESULT

Refer to 

DLK-143, "DTC Index"

.

DATA MONITOR

Diagnosis mode

Function Description

SELF-DIAG RESULTS

Displays the diagnosis results judged by Intelligent Key unit.

DATA MONITOR

The Intelligent Key unit input/output signals are displayed.

ACTIVE TEST

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

ECU IDENTIFICATION

The Intelligent Key unit part number is displayed.

Monitor Item

Condition

PUSH SW

Indicates [ON (pushed)/OFF (released)] condition of ignition knob switch.

KEY SW

Indicates [ON (inserted)/OFF (removed)] condition of key switch.

DR REQ SW

Indicates [ON (pressed)/OFF (released)] condition of door request switch (driver side).

AS REQ SW

Indicates [ON (pressed)/OFF (released)] condition of door request switch (passenger 
side).

BD/TR REQ SW

This item is shown but not monitored.

IGN SW

Indicates [ON (ON or START position)/OFF (other than ON and START position)] con-
dition of ignition switch ON position.

ACC SW

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

STOP LAMP SW

Indicates [ON/OFF] condition of stop lamp switch.

P RANGE SW

Indicates [ON/OFF] position of shift lever park position switch.

BD OPEN SW

This item is shown but not monitored.

TR CANCEL SW

This item is shown but not monitored.

DOOR LOCK SIG

Indicates [ON/OFF] condition of LOCK signal from Intelligent Key.

DOOR UNLOCK SIG

Indicates [ON/OFF] condition of UNLOCK signal from Intelligent Key.

KEYLESS TRUNK

This item is shown but not monitored.

KEYLESS PANIC

Indicates [ON (pressed)/OFF (released)] condition of Intelligent Key panic button.

KEYLS PSD LH

This item is shown but not monitored.

KEYLS PSD RH

This item is shown but not monitored.

KEYLS PBD SIG

Indicates [ON (pressed)/OFF (released)] condition of Intelligent Key back door button.

DOOR SW DR

Indicates [OPEN/CLOSE] condition of front door switch (driver side) from BCM via CAN 
communication.

DOOR SW AS

Indicates [OPEN/CLOSE] condition of front door switch (passenger side) from BCM via 
CAN communication.

DOOR SW RR

Indicates [OPEN/CLOSE] condition of rear door switch (RH) from BCM via CAN com-
munication.

DOOR SW RL

Indicates [OPEN/CLOSE] condition of rear door switch (LH) from BCM via CAN com-
munication.

DOOR BK SW

Indicates [OPEN/CLOSE] condition of back door switch from BCM via CAN communi-
cation.

2010 Pathfinder

DLK-44

< FUNCTION DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

DIAGNOSIS SYSTEM (INTELLIGENT KEY UNIT)

ACTIVE TEST

TRUNK SW

This item is shown but not monitored.

VEHICLE SPEED

Displays the vehicle speed signal received from combination meter by numerical value 
[km/h].

Monitor Item

Condition

Test item

Description

DOOR LOCK/UNLOCK

This test is able to check door lock/unlock operation. 
• ALL UNLK: All door lock actuators are unlocked.
• DR UNLK: Door lock actuator (driver side) is unlocked.
• AS UNLK: Door lock actuator (passenger side) is unlocked.
• BK UNLK: This item is indicated, but inactive.
• LOCK: All door lock actuator is locked.

ANTENNA

This test is able to check Intelligent Key antenna operation. 
When the following condition are met, hazard warning lamps flash.
• ROOM ANT1: Instrument panel area antenna detects Intelligent Key when “ROOM ANT1” is selected.
• ROOM ANT2: Center console and luggage area antennas detect Intelligent Key when “ROOM ANT2”is 

selected.

• LUG ANT:This selection is not used.
• DRIVER ANT: Outside key antenna (driver side) detects Intelligent Key when “DR ANT” is selected.
• ASSIST ANT: Outside key antenna (passenger side) detects Intelligent Key when “AS ANT” is selected.
• BK DOOR ANT: Outside key antenna (rear bumper) detects Intelligent Key when “BK DR ANT” is selected.

OUTSIDE BUZZER

This test is able to check Intelligent Key warning buzzer operation.
• ON
• OFF 

INSIDE BUZZER

This test is able to check warning chime in combination meter operation.
• TAKE OUT: Take away warning chime sounds.
• KNOB: Ignition knob switch warning chime sounds.
• KEY: Key warning chime sounds.
• OFF

INDICATOR

This test is able to check Intelligent Key warning lamps operation.
• Green "KEY" warning lamp illuminates when "BLUE ON" on CONSULT-III screen is touched.
• Red "KEY" warning lamp illuminates when "RED ON" on CONSULT-III screen is touched.
• Shift to park warning lamp illuminates when "KNOB ON" on CONSULT-III screen is touched.
• Green "KEY" warning lamp flashes when "BLUE IND" on CONSULT-III screen is touched.
• Red "KEY" warning lamp flashes when "RED IND" on CONSULT-III screen is touched.
• Shift to park warning lamp (P-SHIFT) flashes when "KNOB IND" on CONSULT-III screen is touched.
• OFF 

2010 Pathfinder

U1000 CAN COMM CIRCUIT

DLK-45

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005259866

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-53, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000005259867

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005259868

1.

PERFORM SELF DIAGNOSTIC

1. Turn ignition switch ON and wait for 2 second 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-37, "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.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)

2010 Pathfinder

DLK-46

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000005259869

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005259870

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

>> Replace BCM.

Special Repair Requirement

INFOID:0000000005259871

1.

REQUIRED WORK WHEN REPLACING BCM

The BCM must be initialized when replaced. Refer to (Body Control System) for BCM configuration.

Initialize NVIS by CONSULT-III. For the details of initialization, refer to CONSULT-III Operation Manual.

>> Work End.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

2010 Pathfinder

INSTRUMENT PANEL AREA ANTENNA

DLK-47

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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INSTRUMENT PANEL AREA ANTENNA

Description

INFOID:0000000005259872

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000005259873

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT-III

1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.

2. Touch “ROOM ANT1”.

3. When Intelligent Key is inside instrument panel area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> Instrument panel area antenna is OK.

NO

>> Refer to 

DLK-47, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005259874

Regarding Wiring Diagram information, refer to 

DLK-149, "Wiring Diagram — INTELLIGENT KEY SYSTEM —

"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.

Is the inspection result normal?

YES

>> Instrument panel area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

1. Disconnect Intelligent Key unit connector and instrument panel area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 15, 16 and instru-

ment panel area antenna harness connector (B) M68 terminals 1, 2.

Test Item

Condition

Possible cause

ROOM ANT1

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key Unit

• Instrument panel area antenna
• Between Intelligent Key unit and instrument panel area 

antenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

15

Ground

Ignition 
switch is 
pushed.

ALKIA0585ZZ

PIIB7441E

2010 Pathfinder

DLK-48

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INSTRUMENT PANEL AREA ANTENNA

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 15, 16 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and instrument panel area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace instrument panel area antenna. (New antenna or other antenna)

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace instrument panel area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-118, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Instrument panel 

area antenna con-

nector

Terminals

Continuity

A: M164

15

B: M68

1

Yes

16

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

15

Ground

No

16

ALKIA0586ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

15

Ground

Ignition 
switch is 
pushed.

ALKIA0585ZZ

PIIB7441E

2010 Pathfinder

CENTER CONSOLE AREA ANTENNA

DLK-49

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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CENTER CONSOLE AREA ANTENNA

Description

INFOID:0000000005259875

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000005259876

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT-III

1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.

2. Touch “ROOM ANT2”.

3. When Intelligent Key is inside center console area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> Refer to 

DLK-49, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005259877

Regarding Wiring Diagram information, refer to 

DLK-149, "Wiring Diagram — INTELLIGENT KEY SYSTEM —

"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

1. Disconnect Intelligent Key unit connector and center console area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 13, 14 and center

console area antenna harness connector (B) M212 terminals 1, 2.

Test Item

Condition

Possible cause

ROOM ANT2

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key unit

• Center console area antenna
• Between Intelligent Key unit and center console area an-

tenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

2010 Pathfinder

DLK-50

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

CENTER CONSOLE AREA ANTENNA

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 13, 14 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and center console area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace center console area antenna (New antenna or other antenna).

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace center console area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-118, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Center console area 

antenna connector

Terminals

Continuity

A: M164

13

B: M212

1

Yes

14

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

13

Ground

No

14

ALKIA0584ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

2010 Pathfinder