Nissan March K13. Manual — part 150

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-61

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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*: Although the state is indicated as “LOW” the cooling fan operates at high speeds.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE

Test Item

ALT DUTY

%

• Indicates the duty ratio of the power generation

command value. The ratio is calculated by ECM
based on the battery current sensor signal.

BAT CUR SEN

mV

• The signal voltage of battery current sensor is

displayed.

A/F ADJ-B1

—

• Indicates the correction of factor stored in ECM.

The factor is calculated from the difference be-
tween the target air-fuel ratio stored in ECM and
the air-fuel ratio calculated from A/F sensor 1 sig-
nal.

P/N POSI SW

ON/OFF

• Indicates [ON/OFF] condition from the park/neu-

tral position (PNP) switch signal.

INT/A TEMP SE

°

C or

°

F

• The intake air temperature (determined by the

signal voltage of the intake air temperature sen-
sor) is indicated.

AC PRESS SEN

V

• The signal voltage from the refrigerant pressure

sensor is displayed.

EGR TEMP SEN

V

• The signal voltage of EGR temperature sensor is

displayed.

FPCM

Hi/Mid/Low/

Off

• The control condition of the fuel pump control

module (FPCM) (determined by ECM according
to the input signals) is indicated.

THRTL STK CNT B1

—

• The number of cloggings in the throttle valve

closed position is displayed.
NOTE:
This is cleared after repeating non-clogging con-
dition several times.

HO2 S2 DIAG2 (B1)

—

NOTE:
The item is indicated, but not used.

A/F SEN1 DIAG2
(B1)

—

NOTE:
The item is indicated, but not used.

Monitored item

Unit

Description

Remarks

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

ENG COOLANT
TEMP

• Engine: Return to the original

trouble condition

• Change the engine coolant tem-

perature using CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Engine coolant temperature

sensor

• Fuel injector

FUEL INJECTION

• Engine: Return to the original

trouble condition

• Change the amount of fuel injec-

tion using CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

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

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-III.

Engine speed changes according
to the opening percent.

• Harness and connectors
• Solenoid valve

EC-62

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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

WORK SUPPORT MODE

Work Item

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

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode

For details, refer to “How to Display SRT Code” in

EC-45, "Diagnosis Description"

.

FUEL PUMP RELAY

• Ignition switch: ON (Engine

stopped)

• Turn the fuel pump relay “ON”

and “OFF” using CONSULT-III
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

CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Perform Idle Air Volume Learn-

ing.

ALTERNATOR
DUTY

• Engine: idle.
• Change duty ratio using CON-

SULT-III.

Battery voltage cangees.

• Harness and connectors
• IPDM E/R
• Alternator

COOLING FAN*

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

and “OFF” CONSULT-III.
NOTE:
The cooling fan operates at high
speeds even when “LOW” is se-
lected.

Cooling fan moves and stops.

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

V/T ASSIGN ANGLE

• Engine: Return to the original

trouble condition

• Change intake valve timing using

CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

EGR VOL
CONT/V

• Ignition switch: ON

(Engine stopped)

• Change the EGR volume control

valve opening step using CON-
SULT-III.

EGR volume control valve makes
an operating sound.

• Harness and connectors
• EGR volume control valve

POWER BALANCE

• Engine: After warming up, idle the

engine.

• A/C switch OFF
• Shift lever: Neutral
• Cut off each fuel injector signal

one at a time using CONSULT-III.

Engine runs rough or dies.

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

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

WORK ITEM

CONDITION

USAGE

FUEL PRESSURE RELEASE

• FUEL PUMP WILL STOP BY TOUCHING “START” DUR-

ING 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 RETURNS TO THE ORIGINAL COEF-
FICIENT.

When clearing mixture ratio self-
learning value

TARGET IDLE RPM ADJ*

• IDLE CONDITION

When setting target idle speed

TARGET IGN TIM ADJ*

• IDLE CONDITION

When adjusting target ignition timing

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-63

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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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

Diagnosis Tool Function

INFOID:0000000005989199

DESCRIPTION

Generic Scan Tool (OBD II scan tool) complying with SAE J1978/
ISO 15031-4 has several functions explained below.
ISO15765-4 is used as the protocol.
The name “GST” or “Generic Scan Tool” is used in this service man-
ual.

FUNCTION

INSPECTION PROCEDURE

1.

Turn ignition switch OFF.

Test mode

Test item

Corresponding DTC No.

Reference page

EGR SYSTEM

EGR SYSTEM P0400

P0400

EC-203, "DTC Logic"

EGR SYSTEM P1402

P1402

EC-239, "DTC Logic"

HO2S2

HO2S2 (B1) P1146

P0138

EC-164, "DTC Logic"

HO2S2 (B1) P1147

P0137

EC-158, "DTC Logic"

HO2S2 (B1) P0139

P0139

EC-172, "DTC Logic"

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-154, "DTC Logic"

A/F SEN1 (B1) P1276

P0130

EC-147, "DTC Logic"

SEF139P

Diagnostic Service

Function

Service $01

READINESS TESTS

This diagnostic service gains access to current emission-related data values, including an-
alog 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-45, "Diagnosis Description"

.

Service $03

DTCs

This diagnostic service 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 in-
cludes:
• 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 $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 powertrain components/systems that are continuously monitored during normal
driving conditions.

Service $08

—

This diagnostic service is not applicable on this vehicle.

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.

EC-64

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

2.

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

3.

Turn ignition switch ON.

4.

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

5.

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

SEF398S

SEF416S