Content .. 76 77 78 79 ..

Nissan Pathfinder (2008 year). Manual - part 78

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-25

< FUNCTION DIAGNOSIS >

BATTERY SAVER : CONSULT-III Function (BCM - BATTERY SAVER)

INFOID:0000000001712676

WORK SUPPORT

*: Initial setting

DATA MONITOR

1: With Intelligent Key

2: With remote keyless entry

ACTIVE TEST

*: Each lamp switch is in ON position.

TRUNK

TRUNK : CONSULT-III Function (BCM - TRUNK)

INFOID:0000000001712677

DATA MONITOR

Work Item

Setting Item

Setting

ROOM LAMP TIMER SET

MODE 1*

15 min.

Sets the interior room lamp battery saver timer operating
time.

MODE 2

30 min.

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Ignition switch (ON) status judges from IGN signal (ignition power supply)

KEY ON SW [ON/OFF]

The switch status input from key switch

DOOR SW-DR [ON/OFF]

The switch status input from front door switch (driver side)

DOOR SW-AS [ON/OFF]

The switch status input from front door switch (passenger side)

DOOR SW-RR [ON/OFF]

The switch status input from rear door switch RH

DOOR SW- RL [ON/OFF]

The switch status input from rear door switch LH

BACK DOOR SW [ON/OFF]

The switch status input from back door switch

KEY CYL LK-SW [ON/OFF]

Lock switch status input from door key cylinder switch

KEY CYL UN-SW [ON/OFF]

Unlock switch status input from door key cylinder switch

CDL LOCK SW [ON/OFF]

Lock switch status input from door lock and unlock switch

CDL UNLOCK SW [ON/OFF]

Unlock switch status input from door lock and unlock switch

I-KEY LOCK

[ON/OFF]

Lock signal status received from Intelligent Key unit by CAN communication

I-KEY UNLOCK

[ON/OFF]

Unlock signal status received from Intelligent Key unit by CAN communication

KEYLESS LOCK

[ON/OFF]

Lock signal status received from remote keyless entry receiver (integrated in the
BCM)

KEYLESS UNLOCK

[ON/OFF]

Unlock signal status received from remote keyless entry receiver (integrated in the
BCM)

Test Item

Operation

Description

BATTERY SAVER

OFF

Cuts the interior room lamp power supply to turn interior room lamps OFF.

Outputs the interior room lamp power supply to turn interior room lamps ON.*

Monitor Item

[Unit]

Contents

IGN ON SW [ON/OFF]

Indicates condition of ignition switch in ON position

I-KEY TRUNK [ON/OFF]

Indicates condition of Intelligent Key back door opening operation

TRUNK OPNR SW [ON/OFF]

Indicates condition of back door opener switch.

VEHICLE SPEED [ON/OFF]

Indicates condition of vehicle speed signal from combination meter

BCS-26

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

ACTIVE TEST

RETAINED PWR

RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)

INFOID:0000000001712678

Data monitor

SIGNAL BUFFER

SIGNAL BUFFER : CONSULT-III Function (BCM - SIGNAL BUFFER)

INFOID:0000000001712679

DATA MONITOR

ACTIVE TEST

AIR PRESSURE MONITOR

AIR PRESSURE MONITOR : Diagnosis Description

INFOID:0000000001712680

DESCRIPTION

During driving, the TPMS receives the signal transmitted from the transmitter installed in each wheel, when
the tire pressure becomes low. The control unit (BCM) of this system has pressure judgment and trouble diag-
nosis functions.
When the TPMS detects low inflation pressure or another unusual symptom, the warning lamps in the combi-
nation meter comes on.

SELF DIAGNOSTIC PROCEDURE (WITH CONSULT-III)

With CONSULT-III

• Touch “SELF-DIAG RESULTS” display to show malfunction experienced since the last erasing operation.

Refer to

BCS-51, "DTC Index"

SELF DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-III)

Without CONSULT-III

To start the self-diagnostic results mode, ground terminal of the tire pressure warning check connector. The
malfunction location is indicated by the warning lamp flashing.

Test Item

Description

TRUNK/BACK DOOR

This test is able to check back door open operation.
Back door open when “OPEN” on CONSULT-III screen is touched.

Monitor Item

[Unit]

Description

DOOR SW-DR [ON/OFF]

Indicates condition of front door switch LH.

DOOR SW-AS [ON/OFF]

Indicates condition of front door switch RH.

Monitor Item

[Unit]

Description

OIL PRESS SW [ON/OFF]

Displays the status of oil pressure switch received from IPDM E/R via CAN communication.

Test Item

Operation

Description

OIL PRESSURE SW

OFF

BCM transmits the oil pressure switch signal to the combination meter via CAN communica-
tion, which operates the oil pressure gauge in the combination meter.

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-27

< FUNCTION DIAGNOSIS >

NOTE:
When the low tire warning lamp flashes 5 Hz and continues repeating it, the system is normal.

SEIA0745E

Flickering

pattern

Items

Diagnostic items detected when···

Check item

Tire pressure value (Front LH)

Front LH tire pressure drops to 181 kPa (1.8 kg/cm, 25.25 psi) or less.

–

Tire pressure value (Front RH)

Front RH tire pressure drops to 181 kPa (1.8 kg/cm, 25.25 psi) or less.

Tire pressure value (Rear RH)

Rear RH tire pressure drops to 181 kPa (1.8 kg/cm, 25.25 psi) or less.

Tire pressure value (Rear LH)

Rear LH tire pressure drops to 181 kPa (1.8 kg/cm, 25.25 psi) or less.

Transmitter no data (Front LH)

Data from front LH transmitter can not be received.

WT-22

Transmitter no data (Front RH)

Data from front RH transmitter can not be received.

Transmitter no data (Rear RH)

Data from Rear RH transmitter can not be received.

Transmitter no data (Rear LH)

Data from Rear LH transmitter can not be received.

Transmitter checksum error
(Front LH)

Checksum data from front LH transmitter is malfunctioning.

WT-22

Transmitter checksum error
(Front RH)

Checksum data from front RH transmitter is malfunctioning.

Transmitter checksum error
(Rear RH)

Checksum data from rear RH transmitter is malfunctioning.

Transmitter checksum error
(Rear LH)

Checksum data from rear RH transmitter is malfunctioning.

Transmitter pressure data error
(Front LH)

Air pressure data from front LH transmitter is malfunction.

WT-22

Transmitter pressure data error
(Front RH)

Air pressure data from front RH transmitter is malfunction.

Transmitter pressure data error
(Rear RH)

Air pressure data from rear RH transmitter is malfunction.

Transmitter pressure data error
(Rear LH)

Air pressure data from rear LH transmitter is malfunction.

Transmitter function code error
(Front LH)

Function code data from front LH transmitter is malfunction.

WT-22

Transmitter function code error
(Front RH)

Function code data from front RH transmitter is malfunction.

Transmitter function code error
(Rear RH)

Function code data from rear RH transmitter is malfunction.

Transmitter function code error
(Rear LH)

Function code data from rear LH transmitter is malfunction.

BCS-28

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

ERASE SELF-DIAGNOSIS

With CONSULT-III

Perform applicable inspection of malfunctioning item and then repair or replace.

Turn ignition switch “ON” and select “SELF-DIAG RESULTS” mode for “AIR PRESSURE MONITOR” with
CONSULTIII.

Touch “ERASE” on CONSULT-III screen to erase memory.

Without CONSULT-III

• In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is

stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned “ON” and“OFF”.

• However, this information is erased by turning ignition switch “OFF” after performing self-diagnostic or by

erasing the memory using the CONSULT-III.

AIR PRESSURE MONITOR : CONSULT-III Function

INFOID:0000000001712681

WORK SUPPORT MODE

ID Read

The registered ID number is displayed.

ID Regist

Refer to

WT-6, "ID Registration Procedure"

SELF-DIAG RESULTS MODE

Operation Procedure

Refer to

WT-21, "Self-Diagnosis"

DATA MONITOR MODE

Screen of data monitor mode is displayed. Refer to

WT-11, "CONSULT-III Function (BCM)"

NOTE:
When malfunction is detected, CONSULT-III perform REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.

ACTIVE TEST MODE

NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction may be different
from that displayed on CONSULT-III.

TEST ITEM LIST

Transmitter battery voltage low
(Front LH)

Battery voltage of front LH transmitter drops.

WT-22

Transmitter battery voltage low
(Front RH)

Battery voltage of front RH transmitter drops.

Transmitter battery voltage low
(Rear RH)

Battery voltage of rear RH transmitter drops.

Transmitter battery voltage low
(Rear LH)

Battery voltage of rear LH transmitter drops.

Vehicle speed signal error

Speed signal is not detected.

WT-22

No flicker-

ing

Tire pressure warning check
switch

Tire pressure warning switch circuit is open.

–

Flickering

pattern

Items

Diagnostic items detected when···

Check item

Test item

Content

WARNING LAMP

This test is able to check to make sure that the warning lamp turns on.

ID REGIST WARNING

This test is able to check to make sure that the buzzer sounds or the warning lamp turns on.

BCS

DIAGNOSIS SYSTEM (BCM)

BCS-29

< FUNCTION DIAGNOSIS >

THEFT ALM

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

INFOID:0000000001712682

WORK SUPPORT

FLASHER

This test is able to check to make sure that each turn signal lamp turns on.

HORN

This test is able to check to make sure that the horn sounds.

Test item

Content

Work 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.

BCS-30

< COMPONENT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

COMPONENT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000001712685

Refer to

LAN-57, "CAN Communication Signal Chart"

DTC Logic

INFOID:0000000001712686

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001712687

PERFORM SELF DIAGNOSTIC

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

Check “Self Diagnostic Result” of BCM.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to

LAN-14, "Trouble Diagnosis Flow Chart"

>> 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.

Any item (or items) of the following listed below is
malfunctioning in CAN communication system.
• Transmission
• Receiving (ECM)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (MULTI AV)
• Receiving (IPDM E/R)
• Receiving (I-KEY)

BCS

U1010 CONTROL UNIT (CAN)

BCS-31

< COMPONENT DIAGNOSIS >

U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000001712688

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001712689

REPLACE BCM

When “DTC:U1010” is detected, replace BCM.

>> Replace BCM. Refer to

BCS-54, "Removal and Installation"

Special Repair Requirement

INFOID:0000000001712690

ADDITIONAL SERVICE WHEN REPLACING BCM

>> Refer to

BCS-3, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair

Requirement"

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

BCS-32

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000001712691

CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

>> GO TO 2

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect BCM.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

>> Repair or replace harness.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

>> Repair or replace harness.

Terminal No.

Signal name

Fuses and fusible link No.

Battery power supply

18 (10A)

G (50A)

Ignition ACC or ON

4 (10A)

Ignition ON or START

1 (10A)

Connector

Terminals

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

Ground

ACC

power

supply

Ignition

switch

ACC or

Battery voltage

Ground

Ignition

power

supply

Ignition

switch ON

or START

Battery voltage

M20

Ground

Battery

power

supply

Ignition

switch

OFF

Battery voltage

Ground

Battery

power

supply

Ignition

switch

OFF

Battery voltage

LIIA2415E

BCM

Ground

Continuity

Connector

Terminal

M20

Yes

LIIA0915E

Content .. 76 77 78 79 ..