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Nissan Frontier D40. Manual - part 442

EVAP CANISTER

EC-459

< ON-VEHICLE REPAIR >

[QR25DE]

ON-VEHICLE REPAIR

EVAP CANISTER

Component Inspection

INFOID:0000000005273448

EVAP CANISTER

Check EVAP canister as follows:

Block port B.

Blow air into port A and check that it flows freely out of port C.

Release blocked port B.

Apply vacuum pressure to port B and check that vacuum pres-
sure exists at the ports A and C.

Block port A and B.

Apply pressure to port C and check that there is no leakage.

Removal and Installation

INFOID:0000000005273449

EVAP CANISTER

Tighten EVAP canister as shown in the figure.

EVAP CANISTER VENT CONTROL VALVE

Turn EVAP canister vent control valve counterclockwise.

Remove the EVAP canister vent control valve.

Do not reuse the O-ring, replace it with a new one.

BBIA0639E

BBIA0566E

BBIA0567E

EC-460

< SERVICE DATA AND SPECIFICATIONS (SDS)

[QR25DE]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Fuel Pressure

INFOID:0000000005273450

Idle Speed and Ignition Timing

INFOID:0000000005273451

*1: Under the following conditions:

• Air conditioner switch: OFF

• Electric load: OFF (Lights, heater fan)

• Steering wheel: Kept in straight-ahead position

*2: If refrigerant pressure is low, the idle speed may not be increased.

Calculated Load Value

INFOID:0000000005273452

Mass Air Flow Sensor

INFOID:0000000005273453

*: Engine is warmed up to normal operating temperature and running under no load.

Intake Air Temperature Sensor

INFOID:0000000005273454

Engine Coolant Temperature Sensor

INFOID:0000000005273455

Fuel pressure at idle

Approximately 350 kPa (3.57kg/cm

, 51psi)

Target idle speed

No load*

[in P or N position (A/T) or neutral position (M/T)]

A/T: 700

50 rpm

M/T: 625

50 rpm

Air conditioner: ON

In P or N position (A/T) or neutral position (M/T)

725 rpm or more*

Ignition timing

In P or N position (A/T) or neutral position (M/T)

BTDC

Conditions

Calculated load value% (Using CONSULT-III or GST)

At idle

10 - 35

At 2,500 rpm

10 - 35

Supply voltage

Battery voltage (11 - 14V)

Output voltage at idle

0.9 - 1.2V*

Mass air flow (Using CONSULT-III or GST)

1.0 - 4.0 g·m/sec at idle*

4.0 - 12.0 g·m/sec at 2,500 rpm*

Temperature

C (

Resistance k

Ω

25 (77)

1.800 - 2.200

80 (176)

0.283 - 0.359

Temperature

C (

Resistance k

Ω

20 (68)

2.1 - 2.9

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

SERVICE DATA AND SPECIFICATIONS (SDS)

EC-461

< SERVICE DATA AND SPECIFICATIONS (SDS)

[QR25DE]

Air Fuel Ratio (A/F) Sensor 1 Heater

INFOID:0000000005273456

Heated Oxygen sensor 2 Heater

INFOID:0000000005273457

Crankshaft Position Sensor (POS)

INFOID:0000000005273458

Refer to

EC-199, "Component Inspection"

Camshaft Position Sensor (PHASE)

INFOID:0000000005273459

Refer to

EC-204, "Component Inspection"

Throttle Control Motor

INFOID:0000000005273460

Fuel Injector

INFOID:0000000005273461

Fuel Pump

INFOID:0000000005273462

Resistance [at 25

C (77

F)]

2.3 - 4.3

Ω

Resistance [at 25

C (77

F)]

9.9 - 13.3

Ω

Resistance [at 25

C (77

F)]

Approximately 1 - 15

Ω

Resistance [at 10 - 60

C (50 - 140

F)]

11.1 - 14.3

Ω

Resistance [at 25

C (77

F)]

0.2 - 5.0

Ω

EC-462

< BASIC INSPECTION >

[VQ40DE]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Trouble Diagnosis Introduction

INFOID:0000000005569282

INTRODUCTION

The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.

It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.

A visual check only may not find the cause of the incidents. A road
test with CONSULT-III (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on "Work Flow".
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on "Worksheet Sample" should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.

WORK FLOW

Overall Sequence

MEF036D

SEF233G

SEF234G

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