Nissan Cube. Manual - part 308

EC-118

< SYSTEM DESCRIPTION >

[MR18DE]

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

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

ACTIVE TEST MODE

Test Item

A/F-S ATMSPHRC 
CRCT UP B1

count

Displays the number of updates of the A/F sensor atmo-
spheric correction factor.

A/F-S ATMSPHRC 
CRCT UP B2

count

Displays the number of updates of the A/F sensor atmo-
spheric correction factor.

Monitored item

Unit

Description

Remarks

Work item

Condition

Usage

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

IDLE AIR VOL LEARN

• The idle air volume that keeps the engine within the 

specified range is memorized in ECM.

When learning the idle air volume

SELF-LEARNING CONT

• The coefficient of self-learning control mixture ratio re-

turns to the original coefficient.

When clearing mixture ratio self-
learning value

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 discontin-
ue it and display appropriate instruction.
NOTE:
When starting engine, CONSULT may display 
“Battery voltage is low. Charge battery”, even in 
using charged battery.

When detecting EVAP vapor leak 
point of EVAP system

VIN REGISTRATION

• In this mode, VIN is registered in ECM.

When registering VIN in ECM

TARGET IDLE RPM ADJ*

• Idle condition

When setting target idle speed

TARGET IGN TIM ADJ*

• Idle condition

When adjusting target ignition timing

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.

When ECM is replaced.

WRITING DATA FOR REPLC CPU

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

When ECM is replaced.

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

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 Learning.

DIAGNOSIS SYSTEM (ECM)

EC-119

< SYSTEM DESCRIPTION >

[MR18DE]

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

DTC WORK SUPPORT MODE

Test item

*: DTC P1442, P1456 does not apply to this model but appears in DTC Work Support Mode screens.

SRT & P-DTC MODE

POWER BALANCE

• Engine: After warming up, idle 

the engine.

• A/C switch OFF
• Selector lever: P or N position 

(CVT), Neutral position (M/T)

• Cut off each fuel injector signal 

one at a time using CONSULT.

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 “LOW”, “HI” 

and “OFF” using CONSULT.

Cooling fan moves and stops.

• Harness and connectors
• IPDM E/R (Cooling fan relay)
• Cooling fan motor

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 sen-

sor

• Fuel injector

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

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 
CONSULT.

Engine speed changes according 
to the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP SEN

• Change the fuel tank temperature using CONSULT.

VENT CONTROL/V

• Ignition switch: ON (Engine 

stopped)

• Turn solenoid valve “ON” and 

“OFF” using the CONSULT 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 us-

ing CONSULT.

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.

Battery voltage charges.

• Harness and connectors
• IPDM E/R
• Alternator

Test item

Condition

Judgment

Check item (Remedy)

Test mode

Test item

Corresponding 

DTC No.

Reference page

EVAPORATIVE SYSTEM

EVP V/S LEAK P0456/P1456*

P0456

EC-291

PURG VOL CN/V P1444

P0443

EC-260

PURG FLOW P0441

P0441

EC-254

A/F SEN1

A/F SEN1 (B1) P1278/P1279

—

—

A/F SEN1 (B1) P1276

P0130

EC-180

HO2S2

HO2S2 (B1) P1146

P0138

EC-196

HO2S2 (B1) P1147

P0137

EC-190

HO2S2 (B1) P139

P0139

EC-204

EC-120

< SYSTEM DESCRIPTION >

[MR18DE]

DIAGNOSIS SYSTEM (ECM)

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 pattern
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 fol-
lowing 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.

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.

JSBIA0062GB

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-121

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

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DTC/CIRCUIT DIAGNOSIS

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Description

INFOID:0000000009947239

The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT during normal operation of the Engine Control System. When the value in “SPEC” of
“DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the value
in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have one
or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-

tion)

• A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)

Component Function Check

INFOID:0000000009947240

1.

START

Make sure that all of the following conditions are satisfied.
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm

2

, 14.25 - 15.12 psi)

• Atmospheric temperature: 20 - 30

°

C (68 - 86

°

F)

• Engine coolant temperature: 75 - 95

°

C (167 - 203

°

F)

• Transmission: Warmed-up
- CVT models: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID

TEMP SE” (CVT fluid temperature sensor signal) indicates more than 60

°

C (140

°

F).

- M/T models: After the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight

ahead.

• Engine speed: Idle

>> GO TO 2.

2.

PERFORM “SPEC” OF “DATA MONITOR” MODE

With CONSULT

NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1.

Perform 

EC-13, "BASIC INSPECTION : Special Repair Requirement"

.

2.

Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT.

3.

Make sure that monitor items are within the SP value.

Is the inspection result normal?

YES

>> END

NO

>> Go to 

EC-122, "Diagnosis Procedure"

.