1999 NISSAN PRIMERA fuel pump

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

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

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

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

Fail-safe Chart=NCEC0040The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir-
cuit. When the ECM enters the fail-safe mode, the MI illuminates.
DTC No.
Detected items Engine operating condition in fail-safe mode CON-
SULT-II
GSTECM*1
P0100 0100 Mass air flow sensor
circuitEngine speed will not rise more than 2,400 rpm due to the fuel cut.
P0115 0115 Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time
after turning ignition switch ªONº or ªSTARTº.
CONSULT-II displays the engine coolant temperature decided by ECM.
The radiator fan operates.
ConditionEngine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is
turned ON or Start40ÉC (104ÉF)
More than approx. 4 minutes
after ignition ON or Start80ÉC (176ÉF)
Except as shown above40 - 80ÉC (104 - 176ÉF)
(Depends on the time)
P0120 0120 Throttle position sensor
circuitThrottle position will be determined based on the injected fuel amount and
the engine speed. Therefore, acceleration will be poor.
Condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
Unable to
access
ECMUnable to
access
Diagnostic
Test Mode
IIECMECM fail-safe activating condition
The computing function of the ECM was judged to be malfunctioning.
When the fail-safe system activates (i.e., if the ECM detects a malfunction
condition in the CPU of ECM), the MI on the instrument panel lights to warn
the driver.
However it is not possible to access ECM and DTC cannot be confirmed.
Engine control with fail-safe
When ECM fail-safe is operating, fuel injection, ignition timing, fuel pump
operation and IACV-AAC valve operation are controlled under certain limita-
tions.
ECM fail-safe operation
Engine speedEngine speed will not rise more than
3,000 rpm
Fuel injection Simultaneous multiport fuel injection system
Ignition timing Ignition timing is fixed at the preset valve
Fuel pumpFuel pump relay is ªONº when engine is
running and ªOFFº when engine stalls
IACV-AAC valve Full open
Replace ECM, if ECM fail-safe condition is confirmed.
*: In Diagnostic Test Mode II (Self-diagnostic results)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
Fail-safe Chart
EC-81

Symptom Matrix ChartNCEC0041SYSTEM Ð ENGINE CONTROL SYSTEMNCEC0041S01
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit11232 22 3 2EC-QG-336
Fuel pressure regulator system334444444 4EC-QG-30
Injector circuit11232 22 2EC-QG-319
Evaporative emission system334444444 4EC-QG-25
Air Positive crankcase ventilation
system334444444 41EC-QG-28
Incorrect idle speed adjustment 3 31111 1EC-QG-32
IACV-AAC valve circuit112332222 2 2EC-QG-274
Ignition Incorrect ignition timing adjust-
ment33111 11 1EC-QG-32
Ignition circuit11222 22 2EC-QG-323
EGR* EGR volume control valve circuit2233 3EC-QG-252
EGR system212333223 3EC-QG-244,
252, 305
Main power supply and ground circuit22333 33 23 2EC-QG-103
Air conditioner circuit223333333 3 2HAsection
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
*: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
Symptom Matrix Chart
EC-82

SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Engine Cylinder head
55555 55 5
EM section Cylinder head gasket 4 3
Cylinder block
66666 66 64 Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mecha-
nismTiming chain
55555 55 5 EMsection Camshaft
Intake valve
3
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5 FEsection
Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 5MA, EM and
LC sections
Oil level (Low)/Filthy oil
LC section Cooling Radiator/Hose/Radiator filler cap
55555 55 45 Thermostat 5
Water pump
Water gallery
Cooling fan 5 EC-QG-289
Coolant level (low)/
Contaminated coolantMA section
1 - 6: The numbers refer to the order of inspection.
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
Symptom Matrix Chart (Cont'd)
EC-85

CONSULT-II Reference Value in Data Monitor
Mode
NCEC0042Remarks:
ISpecification data are reference values.
ISpecification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
(i.e., Adjust ignition timing with a timing light before monitoring IGN TIMING. Specification data might be displayed even when igni-
tion timing is not adjusted to specification. This IGN TIMING monitors the data calculated by the ECM according to the input signals
from the camshaft position sensor and other ignition timing related sensors.)
IIf the real-time diagnosis results are NG, and the on board diagnostic system results are OK, when diagnosing the mass air flow sensor,
first check to see if the fuel pump control circuit is normal.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEEDITachometer: Connect
IRun engine and compare tachometer indication with the CONSULT-II
value.Almost the same speed as the
CONSULT-II value.
MAS A/F SE-B1IEngine: After warming up
IAir conditioner switch: OFF
IShift lever: ªNº
INo-loadIdle 1.0 - 1.7V
2,500 rpm 1.5 - 2.1V
COOLAN TEMP/SIEngine: After warming up More than 70ÉC (158ÉF)
HO2S1 (B1)
IEngine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V+,0.6 - 1.0V
HO2S1 MNTR (B1)LEAN+,RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
IEngine: After warming upRevving engine from idle to 3,000
rpm quickly0 - 0.3V+,0.6 - 1.0V
HO2S2 MNTR (B1)LEAN+,RICH
VHCL SPEED SEITurn drive wheels and compare speedometer indication with the CON-
SULT-II valueAlmost the same speed as the
CONSULT-II value
BATTERY VOLTIIgnition switch: ON (Engine stopped) 11 - 14V
THRTL POS SENIEngine: Idle Throttle valve fully closed 0.35 - 0.65V
IIgnition switch: ON
(Engine stopped)Throttle valve fully opened 3.7 - 4.5V
EGR TEMP SEN*IEngine: After warming up Less than 4.5V
START SIGNALIIgnition switch: ON,START,ON OFF,ON,OFF
CLSD THL/P SW
CLSD THL POSIEngine: Idle Throttle valve: Idle position ON
IIgnition switch: ON
(Engine stopped)Throttle valve: Slightly open OFF
AIR COND SIGIEngine: After warming up, idle
the engineA/C switch ªOFFº OFF
A/C switch ªONº
(Compressor operates)ON
P/N POSI SWIIgnition switch: ONShift lever ªNº ON
Except above OFF
PW/ST SIGNALIEngine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is turned ON
IGNITION SWIIgnition switch: ON,OFF ON,OFF
*: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
CONSULT-II Reference Value in Data Monitor Mode
EC-86