Nissan March K13. Manual - part 138

PRECAUTIONS

EC-13

< PRECAUTION >

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• When measuring ECM signals with a circuit tester, never allow

the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.

• Do not operate fuel pump when there is no fuel in lines.
• Tighten fuel hose clamps to the specified torque.

• Do not depress accelerator pedal when starting.
• Immediately after starting, do not rev up engine unnecessar-

ily.

• Do not rev up engine just prior to shutdown.

• When installing C.B. ham radio or a mobile phone, be sure to

observe the following as it may adversely affect electronic
control systems depending on installation location.

- Keep the antenna as far as possible from the electronic con-

trol units.

- Keep the antenna feeder line more than 20 cm (8 in) away

from the harness of electronic controls.
Do not let them run parallel for a long distance.

- Adjust the antenna and feeder line so that the standing-wave

ratio can be kept smaller.

- Be sure to ground the radio to vehicle body.

SEF348N

SEF709Y

SEF708Y

EC-14

< PREPARATION >

[HR12DE (TYPE 1)]

PREPARATION

PREPARATION

PREPARATION

Special Service Tools

INFOID:0000000005989139

Commercial Service Tools

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Tool number
Tool name

Description

KV10120000
Fuel tube adapter

Measuring fuel pressure

JSBIA0410ZZ

Tool name

Description

Oxygen sensor thread 
cleaner

Reconditioning the exhaust system threads before 
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor

Anti-seize lubricant 

i.e.: (Permatex

TM

 

133AR or equivalent 
meeting MIL specifica-
tion MIL-A-907)

Lubricating oxygen sensor thread cleaning tool 
when reconditioning exhaust system threads.

AEM488

S-NT779

STRUCTURE AND OPERATION

EC-15

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

STRUCTURE AND OPERATION

Positive Crankcase Ventilation

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This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV
valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes
through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

PBIB2962E

PBIB1588E

EC-16

< SYSTEM DESCRIPTION >

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COMPONENT PARTS

COMPONENT PARTS

Component Parts Location

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ENGINE ROOM COMPARTMENT

*: Not used for engine control system.

ENGINE COMPARTMENT

1.

Battery current sensor (with battery 

temperature sensor

*

)

Refer to 

Dummy cross-refer-

ence("XX-XX")

2.

ECM

3.

IPDM E/R
Refer to 

Dummy cross-refer-

ence("XX-XX")

4.

Mass air flow sensor (with intake air-
temperature sensor)

5.

Electric throttle control actuator (with 
built in throttle position sensor and 
throttle control motor)

6.

EVAP canister purge volume control 
solenoid valve

7.

Refrigerant pressure sensor
Refer to 

Dummy cross-refer-

ence("XX-XX")

8.

Cooling fan motor
Refer to 

Dummy cross-refer-

ence("XX-XX")

JSBIA0325ZZ