Infiniti QX56 (JA60). Manual - part 458

EC-484

< PRECAUTION >

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PRECAUTIONS

• 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.

• Do not use ECM ground terminals when measuring input/out-

put voltage. Doing so may result in damage to the ECM's tran-

sistor. Use a ground other than ECM terminals, such as the

ground.

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

the figure.

SEF217U

SEF348N

PBIB1144E

PRECAUTIONS

EC-485

< PRECAUTION >

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• 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

radio can be kept smaller.

- Be sure to ground the radio to vehicle body.

BBIA0402E

SEF709Y

SEF708Y

EC-486

< PREPARATION >

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PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000005149505

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

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

KV10117100
(J-36471-A)
Heated oxygen sensor 
wrench

Loosening or tightening heated oxygen sensors 
with 22 mm (0.87 in) hexagon nut

KV10114400
(J-38365)
Heated oxygen sensor 
wrench

Loosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)

(J-44626)
Air fuel ratio (A/F) sen-
sor wrench

Loosening or tightening air fuel ratio (A/F) sensor 1

(J-44321)
Fuel pressure gauge 
kit

Checking fuel pressure 

(J-44321-6)
Fuel pressure adapter

Connecting fuel pressure gauge to quick connec-
tor type fuel lines.

S-NT564

S-NT379

S-NT636

LEM054

LEC642

LBIA0376E

PREPARATION

EC-487

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Commercial Service Tool

INFOID:0000000005149506

(J-45488)
Quick connector re-
lease

Remove fuel tube quick connectors in engine 
room.

(J-23688)
Engine coolant refrac-
tometer

Checking concentration of ethylene glycol in en-
gine coolant

Tool number
(Kent-Moore No.) 
Tool name

Description

PBIC0198E

WBIA0539E

Tool name
(Kent-Moore No.)

Description

Leak detector 
i.e.: (J-41416)

Locating the EVAP leak

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

Applying positive pressure through EVAP service 
port

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

Checking fuel tank vacuum relief valve opening 
pressure

Socket wrench

Removing and installing engine coolant tempera-
ture sensor

S-NT703

S-NT704

S-NT815

S-NT705