Content .. 155 156 157 158 ..

Nissan Pathfinder (2007 year). Manual - part 157

TROUBLE DIAGNOSIS

EC-123

2007 Pathfinder

ACTIVE TEST MODE
Test Item

*: Leaving cooling fan OFF with CONSULT-II while engine is running may cause the engine to overheat.

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

●

Engine: Return to the original
trouble condition

●

Change the amount of fuel injec-
tion using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Fuel injector

●

Air fuel ratio (A/F) sensor 1

IGNITION TIM-
ING

●

Engine: Return to the original
trouble condition

●

Timing light: Set

●

Retard the ignition timing using
CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Perform Idle Air Volume Learning.

POWER BAL-
ANCE

●

Engine: After warming up, idle
the engine.

●

A/C switch: OFF

●

Shift lever: P or N

●

Cut off each fuel injector signal
one at a time using CONSULT-II.

Engine runs rough or dies.

●

Harness and connectors

●

Compression

●

Fuel injector

●

Power transistor

●

Spark plug

●

Ignition coil

COOLING FAN*

●

Ignition switch: ON

●

Turn the cooling fan HI, LOW and
OFF using CONSULT-II.

Cooling fan moves and stops.

●

Harness and connectors

●

Cooling fan motor

●

IPDM E/R

ENG COOLANT
TEMP

●

Engine: Return to the original
trouble condition

●

Change the engine coolant tem-
perature using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Engine coolant temperature sen-
sor

●

Fuel injector

FUEL PUMP
RELAY

●

Ignition switch: ON (Engine
stopped)

●

Turn the fuel pump relay ON and
OFF using CONSULT-II and lis-
ten to operating sound.

Fuel pump relay makes the operat-
ing sound.

●

Harness and connectors

●

Fuel pump relay

VIAS SOL VALVE

●

Ignition switch: ON

●

Turn solenoid valve ON and OFF
with CONSULT-II and listen for
operating sound.

Solenoid valve makes an operating
sound.

●

Harness and connectors

●

Solenoid valve

PURG VOL
CONT/V

●

Engine: After warming up, run
engine at 1,500 rpm.

●

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.

Engine speed changes according to
the opening percent.

●

Harness and connectors

●

Solenoid valve

FUEL/T TEMP
SEN

●

Change the fuel tank temperature using CONSULT-II.

VENT CON-
TROL/V

●

Ignition switch: ON (Engine
stopped)

●

Turn solenoid valve ON and OFF
with the CONSULT-II and listen
to operating sound.

Solenoid valve makes an operating
sound.

●

Harness and connectors

●

Solenoid valve

V/T ASSIGN
ANGLE

●

Engine: Return to the original
trouble condition

●

Change intake valve timing using
CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connectors

●

Intake valve timing control sole-
noid valve

ALTERNATOR
DUTY

●

Engine: Idle

●

Change duty ratio using CON-
SULT-II.

Battery voltage changes.

●

Harness and connectors

●

IPDM E/R

●

Alternator

EC-124

TROUBLE DIAGNOSIS

2007 Pathfinder

DTC & SRT CONFIRMATION MODE
SRT STATUS Mode

For details, refer to

EC-53, "SYSTEM READINESS TEST (SRT) CODE"

SRT Work Support Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

DTC Work Support Mode

*: DTC P1442 and P1456 does not apply to R51 models but appears in DTC Work Support Mode screens.

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYS-
TEM

EVP SML LEAK P0442/P1442*

P0442

EC-382

P0455

EC-435

EVP V/S LEAK P0456/P1456*

P0456

EC-442

PURG VOL CN/V P1444

P0443

EC-390

PURG FLOW P0441

P0441

EC-377

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-253

A/F SEN1 (B1) P1276

P0130

EC-228

A/F SEN1 (B2) P1288/P1289

P0153

EC-253

A/F SEN1 (B2) P1286

P0150

EC-228

HO2S2

HO2S2 (B1) P1146

P0138

EC-277

HO2S2 (B1) P1147

P0137

EC-265

HO2S2 (B1) P0139

P0139

EC-291

HO2S2 (B2) P1166

P0158

EC-277

HO2S2 (B2) P1167

P0157

EC-265

HO2S2 (B2) P0159

P0159

EC-291

TROUBLE DIAGNOSIS

EC-125

2007 Pathfinder

REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA)
Description

CONSULT-II has two kinds of triggers and they can be selected by touching “SETTING” in “DATA MONITOR”
mode.

“AUTO TRIG” (Automatic trigger):

●

The malfunction will be identified on the CONSULT-II screen
in real time.
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONI-
TOR” in “DATA MONITOR” screen is changed to “Recording
Data... xx%” as shown at right, and the data after the malfunc-
tion detection is recorded. Then when the percentage
reached 100%, “REAL-TIME DIAG” screen is displayed. If
“STOP” is touched on the screen during “Recording Data...
xx%”, “REAL-TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION MAN-
UAL.

“MANU TRIG” (Manual trigger):

●

DTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.

PBIB1593E

SEF707X

EC-126

TROUBLE DIAGNOSIS

2007 Pathfinder

Operation

“AUTO TRIG”

●

While trying to detect the DTC/1st trip DTC by performing the DTC Confirmation Procedure, be sure to
select to “DATA MONITOR (AUTO TRIG)” mode. You can confirm the malfunction at the moment it is
detected.

●

While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, compo-
nents and harness in the DTC Confirmation Procedure, the moment a malfunction is found the DTC/1st
trip DTC will be displayed. (Refer to “INCIDENT SIMULATION TESTS” in

GI-27, "How to Perform Effi-

cient Diagnosis for an Electrical Incident"

“MANU TRIG”

●

If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU
TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for fur-
ther diagnosis, such as a comparison with the value for the normal operating condition.

Generic Scan Tool (GST) Function

UBS00K4D

DESCRIPTION

Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO9141 is used as the protocol.
The name GST or Generic Scan Tool is used in this service manual.

PBIB0197E

SEF139P

TROUBLE DIAGNOSIS

EC-127

2007 Pathfinder

FUNCTION

INSPECTION PROCEDURE

Turn ignition switch OFF.

Connect GST to data link connector, which is located under LH
dash panel near the hood opener handle.

Diagnostic test mode

Function

Service $01

READINESS TESTS

This diagnostic service gains access to current emission-related data values, including
analog inputs and outputs, digital inputs and outputs, and system status information.

Service $02

(FREEZE DATA)

This diagnostic service gains access to emission-related data value which were stored by
ECM during the freeze frame. For details, refer to

EC-117, "Freeze Frame Data and 1st

Trip Freeze Frame Data"

Service $03

DTCs

This mode gains access to emission-related power train trouble codes which were stored
by ECM.

Service $04

CLEAR DIAG INFO

This diagnostic service can clear all emission-related diagnostic information. This
includes:

●

Clear number of diagnostic trouble codes (Service $01)

●

Clear diagnostic trouble codes (Service $03)

●

Clear trouble code for freeze frame data (Service $01)

●

Clear freeze frame data (Service $02)

●

Reset status of system monitoring test (Service $01)

●

Clear on board monitoring test results (Service $06 and Service $07)

Service $06

(ON BOARD TESTS)

This diagnostic service accesses the results of on board diagnostic monitoring tests of
specific components/systems that are not continuously monitored.

Service $07

(ON BOARD TESTS)

This diagnostic service enables the off board test drive to obtain test results for emission-
related power train components/systems that are continuously monitored during normal
driving conditions.

Service $08

—

This diagnostic service can close EVAP system in ignition switch ON position (Engine
stopped). When this diagnostic service is performed, EVAP canister vent control valve
open can be closed.
In the following conditions, this mode cannot function.

●

Low ambient temperature

●

Low battery voltage

●

Engine running

●

Ignition switch OFF

●

Low fuel temperature

●

Too much pressure is applied to EVAP system

Service $09

(CALIBRATION ID)

This diagnostic service enables the off-board test device to request specific vehicle infor-
mation such as Vehicle Identification Number (VIN) and Calibration IDs.

BBIA0538E

EC-128

TROUBLE DIAGNOSIS

2007 Pathfinder

Turn ignition switch ON.

Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)

Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of
the tool maker.

SEF398S

SEF416S

TROUBLE DIAGNOSIS

EC-129

2007 Pathfinder

CONSULT-II Reference Value in Data Monitor

UBS00K4E

Remarks:

●

Specification data are reference values.

●

Specification data are output/input values which are detected or supplied by the ECM at the connector.

* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in

spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.

MONITOR ITEM

CONDITION

SPECIFICATION

ENG SPEED

●

Run engine and compare CONSULT-II value with the tachometer indica-
tion.

Almost the same speed as the
tachometer indication.

MAS A/F SE-B1

See

EC-135, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

B/FUEL SCHDL

See

EC-135, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

A/F ALPHA-B1
A/F ALPHA-B2

See

EC-135, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

COOLAN TEMP/S

●

Engine: After warming up

More than 70

C (158

A/F SEN1 (B1)
A/F SEN1 (B2)

●

Engine: After warming up

Maintaining engine speed at 2,000
rpm

Fluctuates around 2.2 V

HO2S2 (B1)
HO2S2 (B2)

●

Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met

–

Engine: After warming up

–

Keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load.

0 - 0.3V

←→

Approx. 0.6 -

1.0V

HO2S2 MNTR (B1)
HO2S2 MNTR (B2)

●

Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met

–

Engine: After warming up

–

Keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load.

LEAN

←→

RICH

VHCL SPEED SE

●

Turn drive wheels and compare CONSULT-II value with the speedometer
indication.

Almost the same speed as the
speedometer indication

BATTERY VOLT

●

Ignition switch: ON (Engine stopped)

11 - 14V

ACCEL SEN 1

●

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

0.65 - 0.87V

Accelerator pedal: Fully depressed

More than 4.3V

ACCEL SEN 2*

●

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

0.56 - 0.96V

Accelerator pedal: Fully depressed

More than 4.0V

THRTL SEN 1

THRTL SEN 2*

●

Ignition switch: ON
(Engine stopped)

●

Shift lever: D

Accelerator pedal: Fully released

More than 0.36V

Accelerator pedal: Fully depressed

Less than 4.75V

EVAP SYS PRES

●

Ignition switch: ON

Approx. 1.8 - 4.8V

START SIGNAL

●

Ignition switch: ON

→

START

→

OFF

→

OFF

CLSD THL POS

●

Ignition switch: ON
(Engine stopped)

Accelerator pedal: Fully released

Accelerator pedal: Slightly depressed

OFF

AIR COND SIG

●

Engine: After warming up, idle
the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

P/N POSI SW

●

Ignition switch: ON

Shift lever: P or N

Shift lever: Except above

OFF

PW/ST SIGNAL

●

Engine: After warming up, idle
the engine

Steering wheel: Not being turned

OFF

Steering wheel: Being turned.

LOAD SIGNAL

●

Ignition switch: ON

Rear window defogger switch is ON
and/or lighting switch is in 2nd

Rear window defogger switch is OFF
and lighting switch is OFF

OFF

EC-130

TROUBLE DIAGNOSIS

2007 Pathfinder

IGNITION SW

●

Ignition switch: ON

→

OFF

→

OFF

→

HEATER FAN SW

●

Engine: After warming up, idle
the engine

Heater fan: Operating.

Heater fan: Not operating

OFF

BRAKE SW

●

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

INJ PULSE-B1
INJ PULSE-B2

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

IGN TIMING

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

- 18

BTDC

2,000 rpm

- 45

BTDC

CAL/LD VALUE

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

5% - 35%

2,500 rpm

5% - 35%

MASS AIRFLOW

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

2.0 - 6.0 g·m/s

2,500 rpm

7.0 - 20.0 g·m/s

PURG VOL C/V

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle
(Accelerator pedal is not depressed
even slightly, after engine starting)

2,000 rpm

—

INT/V TIM (B1)
INT/V TIM (B2)

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

−

- 5

2,000 rpm

Approx. 0

- 30

INT/V SOL (B1)
INT/V SOL (B2)

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

0% - 2%

2,000 rpm

Approx. 0% - 50%

VIAS S/V

●

Engine: After warming up

2,200 - 3,300 rpm

Except above conditions

OFF

AIR COND RLY

●

Engine: After warming up, idle
the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates)

FUEL PUMP RLY

●

For 1 second after turning ignition switch ON

●

Engine running or cranking

●

Except above conditions

OFF

VENT CONT/V

●

Ignition switch: ON

OFF

THRTL RELAY

●

Ignition switch: ON

MONITOR ITEM

CONDITION

SPECIFICATION

Content .. 155 156 157 158 ..