Nissan Rogue. Manual — part 452

EC-76

< SYSTEM DESCRIPTION >

[QR25DE]

DIAGNOSIS SYSTEM (ECM)

*: The item is indicated, but not used.

NOTE:

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

WORK SUPPORT MODE

Work Item

SYSTEM 1 DIAG-
NOSIS A B1

INCMP/CM-

PLT

• Indicates DTC P117A self-diagnosis con-

dition.

- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.

SYSTEM 1 DIAG-
NOSIS B B1

ABSNT/

PRSNT

• Indicates DTC P117A self-diagnosis con-

dition.

- ABSNT: Self-diagnosis standby
- PRSNT: Under self-diagnosis

MASS AIR FLOW
SENSOR (Hz)

Hz

• The signal frequency of the mass air flow

sensor is displayed.

• When the engine is stopped, a

certain value is indicated.

• When engine is running, spec-

ification range is indicated in
“SPEC”.

Monitored item

Unit

Monitor Item

Selection

Description

Remarks

ECU

IN-

PUT
SIG-

NALS

MAIN

SIG-

NAL

S

Work item

Condition

Usage

IDLE AIR VOL LEARN

• The idle air volume that keeps the engine within the spec-

ified range is memorized in ECM.

When learning the idle air volume

EVAP SYSTEM CLOSE

Close the EVAP canister vent control valve in order to make
EVAP system close under the following conditions.
• Ignition switch ON
• Engine not running
• Ambient temperature is above 0

°C (32°F).

• No vacuum and no high pressure in EVAP system
• Fuel tank temp is more than 0

°C (32°F).

• Within 10 minutes after starting “EVAP SYSTEM CLOSE”
• When trying to execute “EVAP SYSTEM CLOSE” under

the condition except above, CONSULT will discontinue it
and display appropriate instruction.
NOTE:
When starting engine, CONSULT may display “BAT-
TERY VOLTAGE IS LOW. CHARGE BATTERY”, even in
when using a charged battery.

When detecting EVAP vapor leak
in the EVAP system

FUEL PRESSURE RELEASE

• Fuel pump will stop by touching “START” during idling.

Crank a few times after engine stalls.

When releasing fuel pressure from
fuel line

TARGET IGN TIM ADJ*

• Idle condition

When adjusting target ignition tim-
ing

TARGET IDLE RPM ADJ*

• Idle condition

When setting target idle speed

VIN REGISTRATION

• In this mode, VIN is registered in ECM.

When registering VIN in ECM

SELF-LEARNING CONT

• The coefficient of self-learning control mixture ratio returns

to the original coefficient.

When clearing mixture ratio self-
learning value

CLSD THL POS LEARN

• Ignition on and engine stopped.

When learning the throttle valve
closed position

SAVING DATA FOR REPLC CPU

In this mode, save data that is in ECM.

SAVING DATA FOR REPLC CPU

WRITING DATA FOR REPLC CPU

In this mode, write data stored by “SAVE DATA FOR CPU
REPLC” in work support mode to ECM.

WRITING DATA FOR REPLC
CPU

DIAGNOSIS SYSTEM (ECM)

EC-77

< SYSTEM DESCRIPTION >

[QR25DE]

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*: This function is not necessary in the usual service procedure.

ACTIVE TEST MODE

Test Item

Test item

Condition

Judgment

Check item (Remedy)

FUEL INJECTION

• Engine: Return to the original

trouble condition

• Change the amount of fuel injec-

tion using CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1

ENG COOLANT
TEMP

• Engine: Return to the original

trouble condition

• Change the engine coolant tem-

perature using CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Engine coolant temperature

sensor

• Fuel injector

PURG VOL CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge

volume control solenoid valve
opening percent using CON-
SULT.

Engine speed changes according
to the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP SEN

• Change the fuel tank temperature using CONSULT.

FAN DUTY CON-
TROL*

• Ignition switch: ON
• Change duty ratio using CON-

SULT.

Cooling fan speed changes.

• Harness and connectors
• Cooling fan motor
• Cooling fan relay
• Cooling fan control module
• IPDM E/R

FUEL PUMP RELAY

• Ignition switch: ON (Engine

stopped)

• Turn the fuel pump relay “ON”

and “OFF” using CONSULT and
listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

TUMBLE CONTROL
VALVE

• Ignition switch: ON
• Turn intake manifold runner con-

trol valve “ON” and “OFF” using
CONSULT and listen to operating
sound.

Intake Manifold Runner control
valve motor makes an operating
sound.

• Harness and connectors
• Intake Manifold Runner control

valve motor

IGNITION TIMING

• Engine: Return to the original

trouble condition

• Timing light: Set
• Retard the ignition timing using

CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

• Perform Idle Air Volume Learn-

ing.

POWER BALANCE

• Engine: After warming up, idle the

engine.

• A/C switch OFF
• Selector lever: P or N
• Cut off each fuel injector signal

one at a time using CONSULT.

Engine runs rough or stops.

• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil

VENT CONTROL/V

• Ignition switch: ON (Engine

stopped)

• Turn solenoid valve “ON” and

“OFF” using CONSULT and listen
to operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

INT V/T ASSIGN AN-
GLE

• Engine: Return to the original

trouble condition

• Change intake valve timing using

CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

EXH V/T ASSIGN
ANGLE

• Engine: Return to the original

trouble condition

• Change exhaust valve timing us-

ing CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Exhaust valve timing control so-

lenoid valve

EC-78

< SYSTEM DESCRIPTION >

[QR25DE]

DIAGNOSIS SYSTEM (ECM)

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

DTC WORK SUPPORT MODE

Test Item

SRT & P-DTC MODE

SRT STATUS Mode

• For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT screen; for items whose SRT

codes are not set, “INCMP” is displayed.

• “SRT STATUS” provides the presence or absence of permanent DTCs stored in ECM memory.

PERMANENT DTC STATUS Mode

How to display permanent DTC status

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

4. Turn ignition switch ON.

5. Select “PERMANENT DTC STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT.

NOTE:

Permanent DTCs stored in ECM memory are displayed on the CONSULT screen to show if a driving pat-

tern required for erasing permanent DTCs is complete (CMPLT) or incomplete (INCMP).

CAUTION:

Since the “PERMANENT DTC STATUS” screen displays the previous trip information, repeat the

following twice to update the information: “Ignition switch OFF”, “Wait for more than 10 seconds”

and “Ignition switch ON”.

NOTE:

This mode is not used in regions that permanent DTCs are not regulated by law.

SRT WORK SUPPORT Mode

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

Test mode

Test item

Corresponding DTC No.

Reference page

A/F SEN1

A/F SEN1(B1) P1276

P0130

EC-229

A/F SENSOR1(B1) P014C/P014D

P014C, P014D

EC-258

A/F SENSOR1(B1) P015A/P015B

P015A, P015B

EC-258

EVAPORATIVE SYSTEM

PURG FLOW P0441

P0441

EC-309

PURG VOL CN/V P1444

P0443

EC-314

HO2S2

HO2S2(B1) P1146

P0138

EC-245

HO2S2(B1) P1147

P0137

EC-239

HO2S2(B1) P0139

P0139

EC-252

JSBIA0062GB

DIAGNOSIS SYSTEM (ECM)

EC-79

< SYSTEM DESCRIPTION >

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PERMANENT DTC WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to complete the driving pattern that is required for erasing

permanent DTC.

NOTE:

This mode is not used in regions that permanent DTCs are not regulated by law.