1999 NISSAN PRIMERA Electronic Repair Manual

jump start tire pressure reset differential airbag disable cruise control battery location

Page 505 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
EGR VOL
CONT/V
(If so equipped)IEngine: After warming up, idle
the engine.
IChange the EGR volume control
valve opening step using CON-
SULT-II.Engine

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NISSAN PRIMERA 1999 Electronic Repair Manual REAL TIME DIAGNOSIS IN DATA MONITOR MODE
(RECORDING VEHICLE DATA)
NCEC0034S10CONSULT-II has two kinds of triggers and they can be selected by
touching ªSETTINGº in ªDATA MONITORº mode.
1) ªAUTO T

REAL TIME DIAGNOSIS IN DATA MONITOR MODE
(RECORDING VEHICLE DATA)
NCEC0034S10CONSULT-II has two kinds of triggers and they can be selected by
touching ªSETTINGº in ªDATA MONITORº mode.
1) ªAUTO TRIGº (Automatic trigger):
IThe 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, ªMONITORº
in ªDATA MONITORº screen is changed to ªRecording
Data...xx%º as shown at left, and the data after the malfunc-
tion detection is recorded. Then when the percentage reached
100%, ªREAL-TIME DIAGº screen is displayed. If `STOPº is
touched on the screen during ªRecording Data ... xx%, ªREAL-
TIME DIAGº screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by ªTRIGGER POINTº and
ªRecording Speedº. Refer to CONSULT-II OPERATION
MANUAL.
2) ªMANU TRIGº (Manual trigger):
IDTC/1st trip DTC and malfunction item will not be displayed
automatically on CONSULT-II screen even though a malfunc-
tion is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.
Use these triggers as follows:
1) ªAUTO TRIGº
IWhile trying to detect the DTC/1st trip DTC by performing the
ªDTC Confirmation Procedureº, be sure to select ªDATA MONI-
TOR (AUTO TRIG)º mode. You can confirm the malfunction at
the moment it is detected.
IWhile narrowing down the possible causes, CONSULT-II
should be set in ªDATA MONITOR (AUTO TRIG)º mode, espe-
cially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twist-
ing) the suspicious connectors, components and harness in
the ªDTC Confirmation Procedureº, the moment a malfunction
is found the DTC/1st trip DTC will be displayed. (Refer to GI
section, ªIncident Simulation Testsº in ªHOW TO PERFORM
EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº.)
2) ªMANU TRIGº
IIf the malfunction is displayed as soon as ªDATA MONITORº
is selected, reset CONSULT-II to ªMANU TRIGº. By selecting
ªMANU TRIGº 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.
SEF705Y
SEF707X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-64

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NISSAN PRIMERA 1999 Electronic Repair Manual SEF720X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Contd)
EC-65

Page 508 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Generic Scan Tool (GST)=NCEC0035DESCRIPTIONNCEC0035S01Generic Scan Tool (OBDII scan tool) complying with ISO15031-4
has 9 different functions explained on the next page.
ISO9141 is used as the protoco

Page 509 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual FUNCTIONNCEC0035S03
Diagnostic test mode Function
MODE 1 READINESS TESTSThis mode gains access to current emission-related data values, including analog
inputs and outputs, digital inputs and outputs,

Page 510 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual IntroductionNCEC0036The engine has an ECM to control major systems such as fuel
control, ignition control, idle air control system, etc. The ECM
accepts input signals from sensors and instantly drives

IntroductionNCEC0036The engine has an ECM to control major systems such as fuel
control, ignition control, idle air control system, etc. The ECM
accepts input signals from sensors and instantly drives actuators.
It is essential that both input and output signals are proper and
stable. At the same time, it is important that there are no problems
such as vacuum leaks, fouled spark plugs, or other problems with
the engine.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this
case, careful checking of suspected circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the problems. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the ªWork Flowº on EC-QG-70.
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 problems, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A ªDiagnostic Worksheetº like the
example on next page should be used.
Start your diagnosis by looking for ªconventionalº problems first.
This will help troubleshoot driveability problems on an electronically
controlled engine vehicle.
DIAGNOSTIC WORKSHEETNCEC0036S01There are many operating conditions that lead to the malfunction
of engine components. A good grasp of such conditions can make
trouble-shooting faster and more accurate.
In general, each customer feels differently about a problem. It is
important to fully understand the symptoms or conditions for a
customer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the malfunction indicator to come on
steady or blink and DTC to be detected.
Example:
Vehicle ran out of fuel, which caused the engine to misfire.
MEF036D
SEF233G
SEF234G
SEF907L
KEY POINTS
WHAT îî..... Vehicle & engine
model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions,
Weather conditions,
Symptoms
TROUBLE DIAGNOSIS Ð INTRODUCTIONQG16I18DE
Introduction
EC-68

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NISSAN PRIMERA 1999 Electronic Repair Manual Worksheet SampleNCEC0036S0101
MTBL0311
TROUBLE DIAGNOSIS Ð INTRODUCTIONQG16I18DE
Introduction (Contd)
EC-69

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NISSAN PRIMERA 1999 Electronic Repair Manual Work FlowNCEC0037
*1: If the incident cannot be
duplicated, refer to ªTROUBLE
DIAGNOSIS FOR INTERMIT-
TENT INCIDENTº, EC-QG-102.
*2: If the on board diagnostic system
cannot be performed, check main

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