Nissan Pathfinder (2007 year). Manual - part 288

TROUBLE DIAGNOSES WORK FLOW

LAN-35

[CAN FUNDAMENTAL]

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2007 Pathfinder

3.

CAN DIAG SUPPORT MNTR (without PAST): Check the CAN DIAG SUPPORT MNTR (without PAST) of
units indicating “U1000” or “U1001” on SELF-DIAG RESULTS. Draw a line on the diagnosis sheet to indi-
cate the possible error circuit.

NOTE:

●

While an error occurred in the past according to SELF-DIAG RESULTS, it is unclear which signal is not
received. Assume that errors were detected from all reception items.

●

Draw a single line among the unit and all reception items. (Work flow differs from CAN DIAG SUPPORT
MNTR (with PAST).)

a.

Reception item of “EPS”: Assume that the unit could not receive the signals from ECM, ABS, and M&A.
Draw a line among EPS, ECM, ABS, and M&A (line 3-a in the figure).

b.

Reception item of “ABS”: Assume that the unit could not receive the signal from ECM. Draw a line
between ABS and ECM (line 3-b in the figure).

SKIB8733E

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[CAN FUNDAMENTAL]

TROUBLE DIAGNOSES WORK FLOW

2007 Pathfinder

4.

Search for the possible cause using CAN communication signal chart using information from the interview
with the customer.

NOTE:
For the details of CAN communication signal, refer to 

LAN-50, "CAN Communication Signal Chart"

 .

a.

ABS warning lamp turned ON and speedometer did not move: This means that “ABS warning lamp signal”
and “Vehicle speed signal” could not communicate between M&A and ABS (4-a in the figure).

b.

The tachometer moved normally: This means that “Engine speed signal” could communicate normally
between ECM and M&A (4-b in the figure).

SKIB8895E

TROUBLE DIAGNOSES WORK FLOW

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2007 Pathfinder

5.

Fill out the diagnosis sheet based on information from step 4.

a.

The ABS warning lamp turned ON and speedometer did not move: Assume that a possible cause is no
communication between M&A and ABS. Draw a line between M&A and ABS. (Line 5-a in the figure).

b.

The tachometer moved normally: Put check marks between ECM and M&A. The circuit between ECM and
M&A is functioning properly (check marks 5-b in the figure).

SKIB8735E

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[CAN FUNDAMENTAL]

TROUBLE DIAGNOSES WORK FLOW

2007 Pathfinder

6.

The circuit which has the most amount of lines are the possible cause. Error is detected from ABS actua-
tor and electric unit (control unit) branch line (shaded in the figure).

NOTE:
For abbreviations, refer to 

LAN-41, "Abbreviation List"

 .

7.

Perform the inspection procedure for the possible cause. Refer to 

LAN-75, "Malfunction Area Chart"

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SKIB8896E

TROUBLE DIAGNOSES WORK FLOW

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2007 Pathfinder

Past Error — Short Circuit —

When the symptoms listed below exist, a short circuit of the CAN communication line is a possible cause.

Item (CONSULT-II)

Indication

Inspection procedure

SELF-DIAG RESULTS

 “U1000” and “U1001” is indicated in the past for most units.

Refer to 

LAN-75, "Malfunction 

Area Chart"

 .

CAN DIAG SUPPORT MNTR

Only on CAN DIAG SUPPORT MNTR (with PAST), “1 - 39” is 
indicated on “PAST” of “TRANSMIT DIAG” and the reception 
item.

SKIB8897E

LAN-40

[CAN]

INDEX FOR DTC

2007 Pathfinder

INDEX FOR DTC

PFP:00004

DTC No. Index

UKS006HF

DTC

Self-diagnosis item

 (CONSULT-II indication)

DTC detection condition

Inspection

U1000

CAN COMM CIRCUIT

When ECM is not transmitting or receiving CAN 
communication signal of OBD (emission-related 
diagnosis) for 2 seconds or more.

Refer to 

LAN-41, "HOW 

TO USE THIS SEC-
TION"

 .

When a control unit (except for ECM) is not 
transmitting or receiving CAN communication 
signal for 2 seconds or more.

U1001

CAN COMM CIRCUIT

When ECM is not transmitting or receiving CAN 
communication signal other than OBD (emis-
sion-related diagnosis) for 2 seconds or more.

U1002

SYSTEM COMM

When a control unit is not transmitting or receiv-
ing CAN communication signal for 2 seconds or 
less.

Start the inspection. 
Refer to the applicable 
section of the indicated 
control unit.

U1010

CONTROL UNIT [CAN]

When an error is detected during the initial diag-
nosis for CAN controller of each control unit.

Replace the control unit 
indicating “U1010”.

HOW TO USE THIS SECTION

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[CAN]

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2007 Pathfinder

HOW TO USE THIS SECTION

PFP:00008

Caution

UKS006HG

●

This section describes information peculiar to a vehicle, sheets for trouble diagnosis, and inspection pro-
cedures.

●

For trouble diagnosis procedure, refer to  

LAN-17, "Trouble Diagnosis Procedure"

 .

Abbreviation List

UKS006HH

Abbreviations in CAN communication signal chart, and the diagnosis sheet are as per the following list.

Abbreviation

Unit name

SELECT SYSTEM

(CONSULT-II)

CAN DIAG SUPPORT MNTR

(CONSULT-II)

4WD

Transfer control unit

ALL MODE AWD/4WD

AWD/4WD

A-BAG

Air bag diagnosis sensor unit

AIR BAG

—

ABS

ABS actuator and electric unit (control unit)

ABS

VDC/TCS/ABS

ADP

Driver seat control unit

AUTO DRIVE POS.

—

BCM

BCM

BCM

BCM/SEC

DISP

Display control unit

—

—

DLC

Data link connector

—

—

ECM

ECM

ENGINE

ECM

HVAC

Front air control

—

—

IPDM-E

IPDM E/R

IPDM E/R

IPDM E/R

M&A

Combination meter

METER

METER/M&A

STRG

Steering angle sensor

—

STRG

TCM

TCM

A/T

TCM

LAN-42

[CAN]

PRECAUTIONS

2007 Pathfinder

PRECAUTIONS

PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

UKS006HI

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.

WARNING:

●

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Precautions When Using CONSULT-II

UKS006HJ

Use CONSULT-II CONVERTER when connecting CONSULT-II to data link connector.

CAUTION:

CAN communication does not function properly if CONSULT-II is used without connecting CONSULT-II
CONVERTER.

Precautions for Trouble Diagnosis

UKS006HK

CAUTION:

●

Never apply 7.0 V or more to the measurement terminal.

●

Use a tester with open terminal voltage of 7.0 V or less.

●

Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness. 

Precautions for Harness Repair

UKS006HL

●

Solder the repaired area and wrap tape around the soldered
area.

NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).

SKIB8766E