Nissan Frontier. Manual - part 476

PRECAUTIONS

EC-475

< PRECAUTION >

[VQ40DE FOR USA AND CANADA]

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• Before replacing ECM, perform “ECM Terminals and Refer-

ence Value” inspection and check ECM functions properly.

Refer to 

EC-532, "ECM Terminal and Reference Value"

.

• Handle mass air flow sensor carefully to avoid damage.

• Never clean mass air flow sensor with any type of detergent.

• Never disassemble electric throttle control actuator.

• Even a slight leak in the air intake system can cause serious

incidents.

• Never shock or jar the camshaft position sensor (PHASE),

crankshaft position sensor (POS).

• After performing each TROUBLE DIAGNOSIS, perform DTC

Confirmation Procedure or Overall Function Check.

The DTC should not be displayed in the DTC Confirmation

Procedure if the repair is completed. The Overall Function

Check should be a good result if the repair is completed.

• 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.

MEF040D

JSBIA1315ZZ

SEF348N

EC-476

< PRECAUTION >

[VQ40DE FOR USA AND CANADA]

PRECAUTIONS

• B1 indicates the bank 1, B2 indicates the bank 2 as shown in

the figure.

• Never operate fuel pump when there is no fuel in lines.

• Tighten fuel hose clamps to the specified torque.

• Never depress accelerator pedal when starting.

• Immediately after starting, never rev up engine unnecessarily.

• Never rev up engine just prior to shutdown.

• When installing C.B. ham radio or a mobile phone, always

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.

Never let them run parallel for a long distance.

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

radio can be kept smaller.

- Always ground the radio to vehicle body.

SEC893C

BBIA0529E

SEF709Y

SEF708Y

PREPARATION

EC-477

< PREPARATION >

[VQ40DE FOR USA AND CANADA]

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000009481186

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

EG17650301
(J-33984-A)
Radiator cap tester 
adapter

Adapts radiator cap tester to radiator cap and radi-
ator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

(J-44321)
Fuel pressure gauge 
kit

Checks fuel pressure

(J-44321-6)
Fuel pressure adapter

Connects fuel pressure gauge to quick connector 
type fuel lines.

(J-45488)
Quick connector re-
lease

 

Removes fuel tube quick connectors in engine 
room

S-NT564

LEC642

LBIA0376E

PBIC0198E

EC-478

< PREPARATION >

[VQ40DE FOR USA AND CANADA]

PREPARATION

Commercial Service Tool

INFOID:0000000009481187

Tool name
(Kent-Moore No.)

Description

Leak detector 
i.e.: (J-41416)

Locates the EVAP leak

EVAP service port 
adapter
i.e.: (J-41413-OBD)

Applies positive pressure through EVAP service 
port

Fuel filler cap adapter
i.e.: (MLR-8382)

Checks fuel tank vacuum relief valve opening 
pressure

Socket wrench

Removes and installs engine coolant temperature 
sensor

Oxygen sensor thread 
cleaner
i.e.: (J-43897-18)
(J-43897-12)

Reconditions 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)

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

S-NT703

S-NT704

S-NT815

S-NT705

AEM488

S-NT779