Nissan Pathfinder (2011 year). Manual - part 477

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1. SELF-DIAG RESULTS: Inspect the control units indicating “U1000” or “U1001” on SELF-DIAG RESULTS.

2. CAN DIAG SUPPORT MNTR (with PAST): Check the CAN DIAG SUPPORT MNTR (with PAST) of units

indicating “U1000” or “U1001” on SELF-DIAG RESULTS. Draw a line on the diagnosis sheet to indicate

the possible error circuit.

NOTE:

For the details of each indication on CAN DIAG SUPPORT MNTR, refer to 

LAN-56, "CAN Diagnostic Sup-

port Monitor"

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a. Reception item of “ECM”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means ECM could not

receive the signal from ABS in the past. Draw a line between ECM and ABS (line 2-a in the figure below).

b. Reception item of “M&A”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means M&A could not

receive the signal from ABS in the past. Draw a line between M&A and ABS (line 2-b in the figure below).

PKID1221E

2011 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

c.

Reception item of “TCM”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means TCM could not

receive the signal from ABS in the past. Draw a line between TCM and ABS (line 2-c in the figure below).

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 below).

PKID1222E

2011 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

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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 below).

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-53, "CAN Communication Signal Chart"

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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 below).

PKID1223E

2011 Pathfinder

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b. The tachometer moved normally: This means that “Engine speed signal” could communicate normally

between ECM and M&A (4-b in the figure below).

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

below).

SKIB8895E

2011 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

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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 below).

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 below).

NOTE:

For abbreviations, refer to 

LAN-36, "Abbreviation List"

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SKIB8735E

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7. Perform the inspection procedure for the possible cause. Refer to “MALFUNCTION AREA CHART”.

Past Error — Short Circuit —

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

PKID1224E

Item (CONSULT-III)

Indication

Inspection procedure

SELF-DIAG RESULTS

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

Refer to “MALFUNCTION AREA 
CHART”.

CAN DIAG SUPPORT MNTR

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

2011 Pathfinder

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DIAGNOSIS AND REPAIR WORKFLOW

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PKID1225E

2011 Pathfinder

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[CAN]

HOW TO USE THIS SECTION

HOW TO USE THIS MANUAL

HOW TO USE THIS SECTION

Caution

INFOID:0000000006247766

• This section describes information peculiar to a vehicle, sheets for trouble diagnosis, and inspection proce-

dures.

• For trouble diagnosis procedure, refer to 

LAN-14, "Trouble Diagnosis Procedure"

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Abbreviation List

INFOID:0000000006247767

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

Abbreviation

Unit name

SELECT SYSTEM

(CONSULT-III)

CAN DIAG SUPPORT MNTR

(CONSULT-III)

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.

—

AV

AV control unit

MULTI AV

DISPLAY

BCM

BCM

BCM

BCM/SEC

DLC

Data link connector

—

—

ECM

ECM

ENGINE

ECM

HVAC

A/C auto amp.

HVAC

HVAC

I-KEY

Intelligent Key unit

INTELLIGENT KEY

I-KEY

IPDM-E

IPDM E/R

IPDM E/R

IPDM E/R

M&A

Combination meter

METER/M&A

METER/M&A

STRG

Steering angle sensor

—

STRG

TCM

TCM

TRANSMISSION

TCM

2011 Pathfinder