Nissan Versa Sedan. Instruction — part 267

DIAGNOSIS SYSTEM (ECM)

EC-67

< SYSTEM DESCRIPTION >

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*: 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

A/F SEN1
DIAG3(B1)

ABSNT/

PRSNT

• Indicates DTC P014C, P014D, P015A or P015B

self-diagnosis condition.

- ABSNT: The vehicle condition is not within the di-

agnosis range.

- PRSNT: The vehicle condition is within the diag-

nosis range.

HO2 S2 DIAG2(B1)

INCMP/CM-

PLT

• Indicates DTC P0139 self-diagnosis (slow re-

sponse) condition.

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

EOP SENSOR

mV

The signal voltage of EOP sensor is displayed.

HO2 S2 DIAG1(B1)

INCMP/CM-

PLT

• Indicates DTC P0139 self-diagnosis (delayed re-

sponse) condition.

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

SYSTEM 1 DIAG-
NOSIS A B1

INCMP/CM-

PLT

• Indicates DTC P117A self-diagnosis condition.
- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.

SYSTEM 1 DIAG-
NOSIS B B1

ABSNT/

PRSNT

• Indicates DTC P117A self-diagnosis condition.
- ABSNT: Self-diagnosis standby
- PRSNT: Under self-diagnosis

Monitored item

Unit

Description

Remarks

WORK ITEM

CONDITION

USAGE

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

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 temperature 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 “Battery volt-
age is low. Charge battery”, even in using charged battery.

When detecting EVAP vapor leak
point of 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 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

TARGET IGN TIM ADJ*

Idle condition

When adjusting target ignition timing

CLSD THL POS LEARN

Ignition on and engine stopped.

When learning throttle valve closed
position

EC-68

< SYSTEM DESCRIPTION >

[HR16DE]

DIAGNOSIS SYSTEM (ECM)

Test Item

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

DTC WORK SUPPORT MODE

Test Item

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

FUEL INJECTION

• Engine: Return to the original trouble

condition

• Change the amount of fuel injection

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 tempera-

ture 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 engine

at 1,500 rpm.

• Change the EVAP canister purge vol-

ume 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.

COOLING FAN*

• Ignition switch: ON
• Turn the cooling fan “LOW”, “HI” and

“OFF” CONSULT.

Cooling fan moves and stops.

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

ALTERNATOR
DUTY

• Engine: Idle
• Change duty ratio using CONSULT.

Battery voltage changes.

• Harness and connectors
• IPDM E/R
• Alternator

FUEL PUMP RELAY

• Ignition switch: ON
• 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

IGNITION TIMING

• Engine: Return to the original trouble

condition

• Timing light: Set
• Retard the ignition timing using CON-

SULT.

If trouble symptom disappears, see
CHECK ITEM.

Perform Idle Air Volume Learn-
ing.

POWER BALANCE

• Engine: After warming up, idle the en-

gine.

• A/C switch OFF
• Shift lever: P or N (A/T or CVT), Neu-

tral (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

VENT CONTROL/V

• Ignition switch: ON
• Turn solenoid valve ON and OFF with

the CONSULT and listen to operating
sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• EVAP canister vent control

solenoid valve

INT V/T ASSIGN
ANGLE

• Engine: Return to the original non-

standard condition

• Change intake valve timing using

CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Intake valve timing control

solenoid valve

EXH V/T ASSIGN
ANGLE

• Engine: Return to the original non-

standard condition

• Change exhaust valve timing using

CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Exhaust valve timing control

solenoid valve

DIAGNOSIS SYSTEM (ECM)

EC-69

< SYSTEM DESCRIPTION >

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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.

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.

Test mode

Test item

Corresponding DTC No.

Reference page

A/F SEN1

A/F SEN1 (B1) P1276

P0130

EC-206, "DTC Logic"

EVAPORATIVE SYSTEM

EVP V/S LEAK P0456/P1456

P0456

EC-317, "DTC Logic"

PURG FLOW P0441

P0441

EC-284, "DTC Logic"

PURG VOL CN/V P1444

P0443

EC-289, "DTC Logic"

HO2S2

HO2S2 (B1) P1146

P0138

EC-222, "DTC Logic"

HO2S2 (B1) P1147

P0137

EC-216, "DTC Logic"

HO2S2 (B1) P0139

P0139

EC-230, "DTC Logic"

JSBIA0062GB

EC-70

< ECU DIAGNOSIS INFORMATION >

[HR16DE]

ECM

ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000009267023

VALUES ON THE DIAGNOSIS TOOL

NOTE:

• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• Numerical values in the following table are reference values.

• These values are input/output values that ECM receives/transmits and may differ from actual operations.

Example: The ignition timing shown by the timing light may differ from the ignition timing displayed on the

data monitor.

This occurs because the timing light shows a value calculated by ECM according to signals received from

the camshaft position sensor and other sensors related to ignition timing.

• For outlines of following items, refer to

EC-61, "CONSULT Function"

.

Monitor Item

Condition

Values/Status

IDLE REQUEST

NOTE:
The item is indicated, but not used.

MIL ON REQUEST

NOTE:
The item is indicated, but not used.

ENGINE NO-LOAD

NOTE:
The item is indicated, but not used.

READY STATE

NOTE:
The item is indicated, but not used.

ENG SPEED

• Run engine and compare CONSULT value with the tachometer indication.

Almost the same speed as
the tachometer indication.

MAS A/F SE-B1

See

EC-147, "Description"

.

B/FUEL SCHDL

See

EC-147, "Description"

.

A/F ALPHA-B1

See

EC-147, "Description"

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°C (158F)

A/F SEN1 (B1)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 2.2 V

HO2S2 (B1)

• Revving engine from idle up to 3,000 rpm quickly after the following conditions

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at

idle for 1 minute under no load

0 - 0.3 V

←→ Approx. 0.6 -

1.0 V

HO2S2 MNTR (B1)

LEAN

←→ RICH

VHCL SPEED SE

• Turn drive wheels and compare CONSULT value with the speedometer indi-

cation.

Almost the same speed as
speedometer indication

BATTERY VOLT

• Ignition switch: ON (Engine stopped)

11 - 14 V

ACCEL SEN 1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.6 - 0.9 V

Accelerator pedal: Fully depressed

4.0 - 4.8 V

ACCEL SEN 2

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.6 - 0.9 V

Accelerator pedal: Fully depressed

3.9 - 4.8 V

TP SEN 1-B1

• Ignition switch: ON

(Engine stopped)

• Shift lever: 1st

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

TP SEN 2-B1

• Ignition switch: ON

(Engine stopped)

• Shift lever:1st

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

FUEL T/TMP SE

• Ignition switch: ON

Indicates fuel tank tempera-
ture