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Nissan Frontier D40. Manual - part 461

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-535

< FUNCTION DIAGNOSIS >

[VQ40DE]

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

DTC & SRT CONFIRMATION MODE

SRT STATUS Mode

For details, refer to

EC-501, "Emission-related Diagnostic Information"

PERMANENT DTC STATUS Mode

For details, refer to

EC-501, "Emission-related Diagnostic Information"

NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.

SRT Work Support Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

PERMANENT DTC WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to complete the driving pattern that is reguired for erasing
permanent DTC.
NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.

DTC Work Support Mode

*: DTC P1442 and P1456 does not apply to D40 models but appears in DTC Work Support Mode screens.

FUEL/T TEMP
SEN

• Change the fuel tank temperature using CONSULT-III.

VENT CON-
TROL/V

• Ignition switch: ON (Engine

stopped)

• Turn solenoid valve ON and OFF

with the CONSULT-III and listen
to operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

V/T ASSIGN AN-
GLE

• Engine: Return to the original

non-standard condition

• Change intake valve timing using

CONSULT-III.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

ALTERNATOR
DUTY

• Engine: Idle
• Change duty ratio using CON-

SULT-III.

Battery voltage changes.

• Harness and connectors
• IPDM E/R
• Alternator

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

Test mode

Test item

Corresponding DTC No.

Reference page

EVAPORATIVE SYS-
TEM

EVP SML LEAK P0442/P1442*

P0442

EC-685

P0455

EC-721

EVP V/S LEAK P0456/P1456*

P0456

EC-728

PURG VOL CN/V P1444

P0443

EC-692

PURG FLOW P0441

P0441

EC-680

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-610

A/F SEN1 (B1) P1276

P0130

EC-598

A/F SEN1 (B2) P1288/P1289

P0153

EC-610

A/F SEN1 (B2) P1286

P0150

EC-598

HO2S2

HO2S2 (B1) P1146

P0138

EC-621

HO2S2 (B1) P1147

P0137

EC-615

HO2S2 (B1) P0139

P0139

EC-629

HO2S2 (B2) P1166

P0158

EC-621

HO2S2 (B2) P1167

P0157

EC-615

HO2S2 (B2) P0159

P0159

EC-629

EC-536

< FUNCTION DIAGNOSIS >

[VQ40DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Generic Scan Tool (GST) Function

INFOID:0000000005273491

DESCRIPTION

Generic Scan Tool (OBDII 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 manual.

FUNCTION

INSPECTION PROCEDURE

Turn ignition switch OFF.

SEF139P

Diagnostic test mode

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 that were saved by
ECM during the freeze frame. For details, refer to

EC-501, "Emission-related Diagnostic

Information"

Service $03

DTCs

This diagnostic service gains access to emission-related power train trouble codes which
were saved 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 can close EVAP system in ignition switch ON position (Engine
stopped). When this diagnostic service is performed, the EVAP canister vent control valve
can be closed.
In the following conditions, this diagnostic service cannot function.
• Low ambient temperature
• Low battery voltage
• Engine running
• Ignition switch OFF
• Low fuel temperature
• Too much pressure is applied to EVAP system

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.

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-537

< FUNCTION DIAGNOSIS >

[VQ40DE]

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

Turn ignition switch ON.

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

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

BBIA0538E

SEF398S

SEF416S

EC-538

< COMPONENT DIAGNOSIS >

[VQ40DE]

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

COMPONENT DIAGNOSIS

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Description

INFOID:0000000005273492

The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”
of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the
value “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have
one or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not illuminate
the MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-

tion)

• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)

Testing Condition

INFOID:0000000005273493

• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm

, 14.25 - 15.12 psi)

• Atmospheric temperature: 20 - 30

C (68 - 86

• Engine coolant temperature: 75 - 95

C (167 - 203

• Transmission: Warmed-up*

• Electrical load: Not applied*

• Engine speed: Idle
*1: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID TEMP SE” (A/T
fluid temperature sensor signal) indicates more than 60

C (140

F).

*2: Rear window defogger switch air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.

Inspection Procedure

INFOID:0000000005273494

NOTE:
Perform “SPEC” of “DATA MONITOR” mode in maximum scale display.

Perform

EC-468, "Basic Inspection"

Confirm that the testing conditions indicated above are met.

Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “SPEC” of “DATA
MONITOR” mode with CONSULT-III.

Make sure that monitor items are within the SP value.

If NG, go to

EC-538, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000005273495

OVERALL SEQUENCE

Content .. 459 460 461 462 ..