1999 NISSAN PRIMERA Electronic Repair Manual

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Page 497 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual CONSULT-II=NCEC0034CONSULT-II INSPECTION PROCEDURENCEC0034S011. Turn ignition switch OFF.
2. Connect ªCONSULT-IIº to data link connector.
(Data link connector is located behind the fuse box cover.)

Page 498 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual ENGINE CONTROL COMPONENT PARTS/CONTROL
SYSTEMS APPLICATION
NCEC0034S02
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOSTIC
RESULTS
D ATA
MONITORD ATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATI

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NISSAN PRIMERA 1999 Electronic Repair Manual ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOSTIC
RESULTS
D ATA
MONITORD ATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*1FREEZE
FRAME
DATA*2SRT
STA-
TUSSRT
WORK
SUP-
PORTDTC
WORK
SUP-

ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOSTIC
RESULTS
D ATA
MONITORD ATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*1FREEZE
FRAME
DATA*2SRT
STA-
TUSSRT
WORK
SUP-
PORTDTC
WORK
SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
OUT-
PUTInjectors X X X
Power transistor (Ignition
timing)X
(Ignition
signal)XXX
IACV-AAC valve X X X X X
Intake valve timing con-
trol solenoid valveXXX
EVAP canister purge vol-
ume control solenoid
valveXXXX
Air conditioner relay X X
Fuel pump relay X X X X
EGR volume control
valve (If so equipped)X X X XXXX
Heated oxygen sensor
heater 1 (front)XXXX
Heated oxygen sensor
heater 2 (rear)XXXX
Cooling fan X X X X
Calculated load value X X X
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-II screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-QG-38.
FUNCTIONNCEC0034S03
Diagnostic test mode Function
Work supportThis mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.
Self-diagnostic resultsSelf-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame
data can be read and erased quickly.*1
Data monitor Input/Output data in the ECM can be read.
Data monitor (spec)Input/Output specifications of the basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
Active testDiagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
DTC confirmation The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
ECM part number ECM part numbers can be read.
*1 The following emission-related diagnostic information is cleared when the ECM memory is erased.
1) Diagnostic trouble codes
2) 1st trip diagnostic trouble codes
3) Freeze frame data
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-57

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NISSAN PRIMERA 1999 Electronic Repair Manual 4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) Distance traveled while MI is activated.
8) Others
WORK SUPPORT MODENCEC0034S04
WORK ITEM CONDITION USAGE
FUEL PRES

4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) Distance traveled while MI is activated.
8) Others
WORK SUPPORT MODENCEC0034S04
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASEIFUEL PUMP WILL STOP BY TOUCHING ªSTARTº
DURING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.When releasing fuel pressure
from fuel line
TARGET IDLE RPM ADJ*IIDLE CONDITION When setting target idle speed
TARGET IGNITION TIMING ADJ*IIDLE CONDITION When adjusting target ignition tim-
ing
After adjustment, confirm target
ignition timing with a timing light.
*: This function is not necessary in the usual service procedure.
SELF DIAGNOSTIC MODENCEC0034S05DTC and 1st Trip DTCNCEC0034S0501Regarding items of ªDTC and 1st trip DTCº, refer to
ªTROUBLE DIAGNOSIS Ð INDEXº, EC-QG-6.
Freeze Frame Data and 1st Trip Freeze Frame DataNCEC0034S0502
Freeze frame data
item*Description
DIAG TROUBLE
CODE
[PXXXX]IEngine Control component part/control system has a trouble code, it is displayed as ªPXXXXº. [Refer to
ªAlphabetical & P No. Index for DTCº (EC-QG-6).]
FUEL SYS DATAIªFuel injection system statusº at the moment a malfunction is detected is displayed.
IOne mode in the following is displayed.
ªMODE 2º: Open loop due to detected system malfunction
ªMODE 3º: Open loop due to driving conditions (power enrichment, deceleration enrichment)
ªMODE 4º: Closed loop - using oxygen sensor(s) as feedback for fuel control
ªMODE 5º: Open loop - has not yet satisfied condition to go to closed loop
CAL/LD VALUE [%]IThe calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [ÉC]
or [ÉF]IThe engine coolant temperature at the moment a malfunction is detected is displayed.
S-FUEL TRIM [%]IªShort-term fuel trimº at the moment a malfunction is detected is displayed.
IThe short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
L-FUEL TRIM [%]IªLong-term fuel trimº at the moment a malfunction is detected is displayed.
IThe long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
ENGINE SPEED
[rpm]IThe engine speed at the moment a malfunction is detected is displayed.
VHCL SPEED [km/h]
or [mph]IThe vehicle speed at the moment a malfunction is detected is displayed.
*: The items are the same as those of 1st trip freeze frame data.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-58

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NISSAN PRIMERA 1999 Electronic Repair Manual DATA MONITOR MODENCEC0034S06
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
ENG SPEED
[rpm]qqIIndicates the engine speed computed from the
POS signal of the crankshaft position

DATA MONITOR MODENCEC0034S06
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
ENG SPEED
[rpm]qqIIndicates the engine speed computed from the
POS signal of the crankshaft position sensor.IAccuracy becomes poor if
engine speed drops below the
idle rpm.
IIf the signal is interrupted while
the engine is running, an abnor-
mal value may be indicated.
MAS A/F SE-B1 [V]qqIThe signal voltage of the mass air flow sensor is
displayed.IWhen the engine is stopped, a
certain value is indicated.
COOLAN TEMP/S
[ÉC] or [ÉF]qqIThe engine coolant temperature (determined by
the signal voltage of the engine coolant tem-
perature sensor) is displayed.IWhen the engine coolant tem-
perature sensor is open or
short-circuited, ECM enters fail-
safe mode. The engine coolant
temperature determined by the
ECM is displayed.
HO2S1 (B1) [V]qqIThe signal voltage of the heated oxygen sensor
1 (front) is displayed.
HO2S2 (B1) [V]qIThe signal voltage of the heated oxygen sensor
2 (rear) is displayed.
HO2S1 MNTR (B1)
[RICH/LEAN]qIDisplay of heated oxygen sensor 1 (front) signal
during air-fuel ratio feedback control:
RICH ... means the mixture became ªrichº, and
control is being affected toward a leaner mix-
ture.
LEAN ... means the mixture became ªleanº, and
control is being affected toward a rich mixture.IAfter turning ON the ignition
switch, ªRICHº is displayed until
air-fuel mixture ratio feedback
control begins.
IWhen the air-fuel ratio feedback
is clamped, the value just
before the clamping is dis-
played continuously.
HO2S2 MNTR (B1)
[RICH/LEAN]qIDisplay of heated oxygen sensor 2 (rear) signal:
RICH ... means the amount of oxygen after
three way catalyst is relatively small.
LEAN ... means the amount of oxygen after
three way catalyst is relatively large.IWhen the engine is stopped, a
certain value is indicated.
VHCL SPEED SE
[km/h] or [mph]qqIThe vehicle speed computed from the vehicle
speed sensor signal or ABS actuator and elec-
tric unit (control unit) signal is displayed.
BATTERY VOLT [V]qIThe power supply voltage of ECM is displayed.
THRTL POS SEN [V]qqIThe throttle position sensor signal voltage is dis-
played.
EGR TEMP SEN [V]
(If so equipped)qqIThe signal voltage of the EGR temperature sen-
sor is displayed.
INT/A TEMP SE
[ÉC] or [ÉF]qIThe intake air temperature determined by the
signal voltage of the intake air temperature sen-
sor is indicated.
START SIGNAL
[ON/OFF]qqIIndicates [ON/OFF] condition from the starter
signal.IAfter starting the engine, [OFF]
is displayed regardless of the
starter signal.
CLSD THL POS
[ON/OFF]qqIIndicates idle position [ON/OFF] computed by
ECM according to the throttle position sensor
signal.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-59

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NISSAN PRIMERA 1999 Electronic Repair Manual Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
AIR COND SIG
[ON/OFF]qqIIndicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condition-
ing signa

Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
AIR COND SIG
[ON/OFF]qqIIndicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condition-
ing signal.
P/N POSI SW
[ON/OFF]qqIIndicates [ON/OFF] condition from the PNP
switch signal.
PW/ST SIGNAL
[ON/OFF]qqIIndicates [ON/OFF] condition of the power steer-
ing oil pressure switch determined by the power
steering oil pressure switch signal.
LOAD SIGNAL
[ON/OFF]qqIIndicates [ON/OFF] condition from the electrical
load signal and/or lighting switch.
ON ... rear defogger is operating and/or lighting
switch is on.
OFF ... rear defogger is not operating and light-
ing switch is not on.
IGNITION SW
[ON/OFF]qIIndicates [ON/OFF] condition from ignition
switch.
HEATER FAN SW
[ON/OFF]qIIndicates [ON/OFF] condition from the heater
fan switch.
INJ PULSE-B1
[msec]qIIndicates the actual fuel injection pulse width
compensated by ECM according to the input
signals.IWhen the engine is stopped, a
certain computed value is indi-
cated.
B/FUEL SCHDL
[msec]IªBase fuel scheduleº indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction.
IGN TIMING [BTDC]qIIndicates the ignition timing computed by ECM
according to the input signals.
IACV-AAC/V [step]qIIndicates the IACV-AAC valve control value
computed by ECM according to the input sig-
nals.
A/F ALPHA-B1 [%]qIIndicates the mean value of the air-fuel ratio
feedback correction factor per cycle.IWhen the engine is stopped, a
certain value is indicated.
IThis data also includes the data
for the air-fuel ratio learning
control.
AIR COND RLY
[ON/OFF]qIIndicates the air conditioner relay control condi-
tion determined by ECM according to the input
signals.
FUEL PUMP RLY
[ON/OFF]qIIndicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
INT/V SOL-B1
[ON/OFF]IThe control condition of the valve timing sole-
noid valve (determined by ECM according to the
input signal) is indicated.
ON ... Intake valve timing control operating
OFF ... Intake valve timing control not operating
COOLING FAN
[ON/OFF]qIIndicates the control condition of the cooling fan
determined by ECM according to the input sig-
nals.
HI ... High speed operation
LOW ... Low speed operation
OFF ... Stop
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-60

Page 503 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
EGR VOL CON/V
[step]
(If so equipped)qIIndicates the EGR volume control valve com-
puted by the ECM according to the input sig-
na

Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
EGR VOL CON/V
[step]
(If so equipped)qIIndicates the EGR volume control valve com-
puted by the ECM according to the input sig-
nals.
IThe opening becomes larger as the value
increases.
HO2S1 HTR (B1)
[ON/OFF]IIndicates [ON/OFF] condition of heated oxygen
sensor 1 (front) heater determined by ECM
according to the input signals.
HO2S2 HTR (B1)
[ON/OFF]IIndicates [ON/OFF] condition of heated oxygen
sensor 2 (rear) heater determined by ECM
according to the input signals.
PURG VOL C/V [%]IIndicates the EVAP canister purge volume con-
trol solenoid valve computed by the ECM
according to the input signals.
IThe opening becomes larger as the value
increases.
CAL/LD VALUE [%]IªCalculated load valueº indicates the value of
the current air flow divided by peak air flow.
ABSOL TH.P/S [%]IªAbsolute throttle position sensorº indicates the
throttle opening computed by ECM according to
the signal voltage of the throttle position sensor.
MASS AIRFLOW
[gm/s]IIndicates the mass air flow computed by ECM
according to the signal voltage of the mass air
flow sensor.
TRVL AFTER MIL
[km] or [Mile]IDistance travelled while MI is activated
VOLTAGE [V]IVoltage measured by the voltage probe.
PULSE
[msec] or [Hz] or [%]IPulse width, frequency or duty cycle measured
by the pulse probe.IOnly ª#º is displayed if item is
unable to be measured.
IFigures with ª#ºs are temporary
ones. They are the same fig-
ures as an actual piece of data
which was just previously mea-
sured.
IDL A/V LEANIDisplay the condition of idle air volume learning
YET ... Idle air volume learning has not been
performed yet.
CMPLT ... Idle air volume learning has already
been performed successfully.
INCMP ... Idle air volume learning has not been
performed successfully.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-61

Page 504 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DATA MONITOR (SPEC) MODENLEC1365S07
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
MAS A/F SE-B1 [V]qqIThe signal voltage of the mass air flow sen-
sor specification is displaye

DATA MONITOR (SPEC) MODENLEC1365S07
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
MAS A/F SE-B1 [V]qqIThe signal voltage of the mass air flow sen-
sor specification is displayed.IWhen the engine is running, specifi-
cation range is indicated.
B/FUEL SCHDL
[msec]IªBase fuel scheduleº indicates the fuel injec-
tion pulse width programmed into ECM,
prior to any learned on board correction.IWhen the engine is running, specifi-
cation range is indicated.
A/F ALPHA-B1 [%]qIIndicates the mean value of the air-fuel ratio
feedback correction factor per cycle.IWhen the engine is running, specifi-
cation range is indicated.
IThis data also includes the data for
the air-fuel ratio learning control.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODENCEC0034S07
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJECTIONIEngine: Return to the original
trouble condition
IChange the amount of fuel injec-
tion using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.IHarness and connector
IFuel injectors
IHeated oxygen sensor 1 (front)
IACV-AAC/V
OPENINGIEngine: After warming up, idle
the engine.
IChange the IACV-AAC valve
opening steps using CONSULT-
II.Engine speed changes according
to the opening steps.IHarness and connector
IIACV-AAC valve
ENG COOLANT
TEMPIEngine: Return to the original
trouble condition
IChange the engine coolant tem-
perature indication using CON-
SULT-II.If trouble symptom disappears, see
CHECK ITEM.IHarness and connector
IEngine coolant temperature sen-
sor
IFuel injectors
IGNITION TIMINGIEngine: Return to the original
trouble condition
ITiming light: Set
IRetard the ignition timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.IªBase Idle Air Volume Initializingº
(Refer to EC-QG-33.)
ICamshaft position sensor
(PHASE)
ICrankshaft position sensor
(POS)
IEngine component parts and
installing conditions
POWER BAL-
ANCEIEngine: After warming up, idle
the engine.
IAir conditioner switch ªOFFº
IShift lever ªNº
ICut off each injector signal one
at a time using CONSULT-II.Engine runs rough or dies.IHarness and connector
ICompression
IInjectors
IPower transistor
ISpark plugs
IIgnition coils
COOLING FANIIgnition switch: ON
ITurn the cooling fan ªONº and
ªOFFº using CONSULT-II.Cooling fan moves and stops.IHarness and connector
ICooling fan motor
FUEL PUMP
RELAYIIgnition switch: ON
(Engine stopped)
ITurn the fuel pump relay ªONº
and ªOFFº using CONSULT-II
and listen to operating sound.Fuel pump relay makes the operat-
ing sound.IHarness and connector
IFuel pump relay
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG16I18DE
CONSULT-II (Cont'd)
EC-62

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