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Nissan Frontier D22. Manual - part 395

TROUBLE DIAGNOSIS

EC-683

[VG33E]

DTC & SRT CONFIRMATION MODE
SRT STATUS Mode

For details, refer to

EC-624, "SYSTEM READINESS TEST (SRT) CODE"

SRT Work Support Mode

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

POWER BAL-
ANCE

●

Engine: After warming up, idle
the engine.

●

A/C switch: OFF

●

Shift lever: N (A/T), Neutral (M/T)

●

Cut off each injector signal one at
a time using CONSULT-II.

Engine runs rough or dies.

●

Harness and connector

●

Compression

●

Fuel injector

●

Power transistor

●

Spark plug

●

Ignition coil

ENG COOLANT
TEMP

●

Engine: Return to the original
trouble condition

●

Change the engine coolant tem-
perature using CONSULT-II.

If trouble symptom disappears, see
CHECK ITEM.

●

Harness and connector

●

Engine coolant temperature sen-
sor

●

Fuel injector

FUEL PUMP
RELAY

●

Ignition switch: ON
(Engine stopped)

●

Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

●

Harness and connector

●

Fuel pump relay

EGRC SOLE-
NOID VALVE

●

Ignition switch: ON

●

Turn EGRC-solenoid valve “ON”
and “OFF” using CONSULT-II
and listen to operating sound.

EGRC-solenoid valve makes an
operating sound.

●

Harness and connector

●

EGRC-solenoid valve

PURG VOL
CONT/V

●

Engine: After warming up, run
engine at 1,500 rpm.

●

Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.

Engine speed changes according to
the opening percent.

●

Harness and connector

●

Solenoid valve

FUEL/T TEMP
SEN

●

Change the fuel tank temperature using CONSULT-II.

VENT CON-
TROL/V

●

Ignition switch: ON
(Engine stopped)

●

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.

Solenoid valve makes an operating
sound.

●

Harness and connector

●

Solenoid valve

VC/V BYPASS/V

●

Ignition switch: ON
(Engine stopped)

●

Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.

Solenoid valve makes an operating
sound.

●

Harness and connector

●

Solenoid valve

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

EC-684

[VG33E]

TROUBLE DIAGNOSIS

DTC Work Support Mode

REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA)
Description

CONSULT-II has two kinds of triggers and they can be selected by
touching “SETTING” in “DATA MONITOR” mode.
1.

“AUTO TRIG” (Automatic trigger):

●

The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC/1st trip DTC and malfunction item will be
displayed if the malfunction is detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown at left, and the data after the malfunction detec-
tion is recorded. Then when the percentage reached 100%,
“REAL-TIME DIAG” screen is displayed. If “STOP” is touched on
the screen during “ Recording Data ... xx%”, “REAL-TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording Speed”. Refer to CONSULT-II OPERATION MAN-
UAL.

“MANU TRIG” (Manual trigger):

●

DTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunction
is detected by ECM.
DATA MONITOR can be performed continuously even though a
malfunction is detected.

Test mode

Test item

Condition

Reference page

EVAPRATIVE SYSTEM

EVAP SML LEAK P0442/P1442

Refer to corresponding
trouble diagnosis for DTC.

EC-909

EC-1066

EVAP V/S LEAK P0456/P1456

PURG VOL CN/V P1444

PURGE FLOW P0441

VC CUT/V BP/V P1491

HO2S1

HO2S1 (B1) P0134

HO2S1 (B1) P1143

HO2S1 (B1) P1144

HO2S1 (B1) P0133

HO2S1 (B2) P0154

HO2S1 (B2) P1163

HO2S1 (B2) P1164

HO2S1 (B2) P0153

HO2S2

HO2S2 (B1) P1146

HO2S2 (B1) P1147

HO2S2 (B1) P0139

HO2S2 (B2) P1166

HO2S2 (B2) P1167

HO2S2 (B2) P0159

EGR SYSTEM

EGR SYSTEM P0400

EC-875

EGR-BPT/VLV P0402

EC-884

EGR SYSTEM P1402

EC-1058

SEF705Y

SEF707X

TROUBLE DIAGNOSIS

EC-685

[VG33E]

Operation

“AUTO TRIG”

●

While trying to detect the DTC/1st trip DTC by performing the “DTC Confirmation Procedure”, be sure to
select to “DATA MONITOR (AUTO TRIG)” mode. You can confirm the malfunction at the moment it is
detected.

●

While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, components
and harness in the “DTC Confirmation Procedure”, the moment a malfunction is found the DTC/1st trip
DTC will be displayed. (Refer to

GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident"

“MANU TRIG”

●

If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU
TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for further
diagnosis, such as a comparison with the value for the normal operating condition.

Generic Scan Tool (GST) Function

UBS00DFB

DESCRIPTION

Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
7 different functions explained on the next page.
ISO9141 is used as the protocol.
The name “GST” or “Generic Scan Tool” is used in this service man-
ual.

SEF720X

SEF139P

EC-686

[VG33E]

TROUBLE DIAGNOSIS

FUNCTION

INSPECTION PROCEDURE

Turn ignition switch OFF.

Connect “GST” to data link connector which is located under LH
dash panel near the fuse box cover.

Diagnostic test mode

Function

MODE 1

READINESS TESTS

This mode gains access to current emission-related data values, including analog inputs
and outputs, digital inputs and outputs, and system status information.

MODE 2

(FREEZE DATA)

This mode gains access to emission-related data value which were stored by ECM during
the freeze frame. (For details, refer to

EC-678, "Freeze Frame Data and 1st Trip Freeze

Frame Data"

MODE 3

DTCs

This mode gains access to emission-related power train trouble codes which were stored
by ECM.

MODE 4

CLEAR DIAG INFO

This mode can clear all emission-related diagnostic information. This includes:

●

Clear number of diagnostic trouble codes (MODE 1)

●

Clear diagnostic trouble codes (MODE 3)

●

Clear trouble code for freeze frame data (MODE 1)

●

Clear freeze frame data (MODE 2)

●

Reset status of system monitoring test (MODE 1)

●

Clear on board monitoring test results (MODE 6 and 7)

MODE 6

(ON BOARD TESTS)

This mode accesses the results of on board diagnostic monitoring tests of specific com-
ponents/systems that are not continuously monitored.

MODE 7

(ON BOARD TESTS)

This mode enables the off board test drive to obtain test results for emission-related pow-
ertrain components/systems that are continuously monitored during normal driving condi-
tions.

MODE 8

—

This mode can close EVAP system in ignition switch ON position (Engine stopped).
When this mode is performed, EVAP canister vent control valve: Closed, bypass valve:
Open.
In the following conditions, this mode cannot function.

●

Low ambient temperature

●

Low battery voltage

●

Engine running

●

Ignition switch OFF

●

Low fuel temperature

●

Too much pressure is applied to EVAP system

MODE 9

CALIBRATION ID

This mode is to enable the off-board to request vehicle specific vehicle information such
as Vehicle Identification Number (VIN) and calibration IDs.

LEC104A

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