NISSAN PRIMERA 1999 Electronic Repair Manual

NEF066A
lªENG SPEEDº should increase gradually while
depressing the accelerator pedal and should
decrease gradually after releasing
the pedal without any intermittent drop or rise.
lªMAS A/F SE -B1º should increase when
depressing the accelerator pedal and should
decrease at the moment ªTHRTL POS SENº is
closed (accelerator pedal is released).
.ENG SPEED
.MAS A/F SE -B1
SEF601Y
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
Major Sensor Reference Graph in Data Monitor Mode (Cont'd)
EC-101

SEF170YA
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
Major Sensor Reference Graph in Data Monitor Mode (Cont'd)
EC-102

ECM Terminals and Reference ValueNCEC0044PREPARATIONNCEC0044S011. ECM is located behind the center console. For this inspection:
Remove the front passenger center console panel.
2. Remove ECM harness protector.
3. Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily.
IOpen harness securing clip to make testing easier.
IUse extreme care not to touch 2 pins at one time.
IData is for comparison and may not be exact.
ECM HARNESS CONNECTOR TERMINAL LAYOUTNCEC0044S02
ECM INSPECTION TABLENCEC0044S03Specification data are reference values and are measured between
each terminal and 48 (ECM ground).
SEF967W
SEF367I
SEF970W
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value
EC-103

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3 W/RHeated oxygen sensor
2 (rear) heater[Engine is running]
IBelow 3,600 rpm [After driving for 2 minutes
at a speed of 70 km/h (43 MPH) or more]Approximately 0.7V
[Ignition switch ªONº]
IEngine stopped
IEngine speed is above 3,600 rpmBATTERY VOLTAGE
(11 - 14V)
4LHeated oxygen sensor
1 (front) heater[Engine is running]
IIdle speedApproximately 0V
[Engine is running]
IMore than 20 seconds after exceeding 3,200
rpmBATTERY VOLTAGE
(11 - 14V)
6
7
15
16BR
Y/B
P
ORIACV-AAC valve[Engine is running]
IWarm-up condition
IIdle speed0 - 14V
10 R/W CVT signal No. 3[Engine is running]
IIdle speed0V
13 LG/R Cooling fan relay[Engine is running]
ICooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
ICooling fan is operatingApproximately 0V
14 P/BEVAP canister purge
volume control solenoid
valve (ON/OFF duty)[Engine is running]
IWarm-up condition
IIdle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
IWarm-up condition
I2,000 rpm5 - 12V
SEF975W
19 L/R CVT signal No. 5[Engine is running]
IIdle speedApproximately 7.5V
21 B/P Fuel pump relay[Ignition switch ªONº]
IFor 2 seconds after turning ignition switch
ªONº
[Engine is running]0-1V
[Ignition switch ªONº]
IMore than 1 second after turning ignition
switch ªONºBATTERY VOLTAGE
(11 - 14V)
22 OR/L Malfunction indicator[Ignition switch ªONº]0-1V
[Engine is running]
IIdle speedBATTERY VOLTAGE
(11 - 14V)
23 Ð Air conditioner switch[Engine is running]
IBoth A/C switch and blower switch are ªONºApproximately 0V
[Engine is running]
IA/C switch is ªOFFºBATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-104

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
31 W/GECM relay (Self shut-
off)[Engine is running]
[Ignition switch ªOFFº]
IFor 9 seconds after turning ignition switch
ªOFFº0-1V
[Ignition switch ªOFFº]
I9 seconds passed after turning ignition switch
ªOFFºBATTERY VOLTAGE
(11 - 14V)
32 L/OR Tachometer[Engine is running]
IWarm-up condition
IIdle speedApproximately 10.5V
SEF973W
[Engine is running]
IEngine speed is 2,000 rpmApproximately 10.5V
SEF974W
35 W/L Ignition signal[Engine is running]
IWarm-up condition
IIdle speedApproximately 0.3V
SEF996V
[Engine is running]
IEngine speed is 2,000 rpmApproximately 0.8V
SEF997V
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-105

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
36*1 G Ignition check[Engine is running]
IWarm-up condition
IIdle speedApproximately 13V
SEF998V
[Engine is running]
IEngine speed is 2,000 rpmApproximately 12V
SEF999V
40 YThrottle position switch
(Closed position)[Engine is running]
IAccelerator pedal releasedBATTERY VOLTAGE
(11 - 14V)
[Ignition switch ªONº]
IAccelerator pedal depressedApproximately 0V
41 B/Y Start signal[Ignition switch ªONº]Approximately 0V
[Ignition switch ªSTARTº]9 - 12V
42 G/OR PNP switch[Ignition switch ªONº]
IGear position is ªNeutral positionº (M/T mod-
els)
IGear position is ªPº or ªNº (CVT models)Approximately 0V
[Ignition switch ªONº]
IExcept the above gear positionBATTERY VOLTAGE
(11 - 14V)
43 B/R Ignition switch[Ignition switch ªOFFº]0V
[Ignition switch ªONº]BATTERY VOLTAGE
(11 - 14V)
44 Ð Air conditioner switch[Engine is running]
IBoth air conditioner switch and blower switch
are ªONº (Compressor operates)Approximately 0V
[Engine is running]
IAir conditioner switch is ªOFFºApproximately 5V
46 PU/WPower steering oil pres-
sure switch[Engine is running]
ISteering wheel is fully turnedApproximately 0V
[Engine is running]
ISteering wheel is not turnedApproximately 5V
48 B ECM ground[Engine is running]
IIdle speedEngine ground
(Probe this terminal with (þ)
tester probe when measuring)
50 R Electric load signal[Engine is running]
IHeadlamp switch or rear window defogger
switch is ªONºBATTERY VOLTAGE
(11 - 14V)
*1: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-106

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
51 LG/B Blower fan SW[Ignition switch ªONº]
IBlower fan switch is ªONºApproximately 0V
[Ignition switch ªONº]
IBlower fan switch is ªOFFºApproximately 5V
54 W/L CVT signal No. 1[Engine is running]
IIdle speedApproximately 0 - 3.5V
55 W/PU CVT signal No. 2[Engine is running]
IIdle speedApproximately 0 - 3.5V
56 LG/B CVT signal No. 4[Engine is running]
IIdle speed
IªRº position0 - 3.5V
57 B ECM ground[Engine is running]
IIdle speedEngine ground
58 B Sensors' ground[Engine is running]
IWarm-up condition
IIdle speedApproximately 0V
61 B Mass air flow sensor[Engine is running]
IWarm-up condition
IIdle speed1.3 - 1.7V
[Engine is running]
IWarm-up condition
IEngine speed is 2,500 rpm1.8 - 2.4V
62 RHeated oxygen sensor
1 (front)[Engine is running]
IWarm-up condition
IEngine speed is 2,000 rpm0 - Approximately 1.0V
SEF008W
63 LHeated oxygen sensor
2 (rear)[Engine is running]
IAfter warming up to normal operating tem-
perature and engine speed is 3,000 rpm0 - Approximately 1.0V
64 GIntake air temperature
sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
intake air temperature
65 WCrankshaft position sen-
sor (OBD)[Engine is running]
IWarm-up condition
IIdle speed3 - 5V (AC range)
0.2 msSEF721W
[Engine is running]
IEngine speed is 2,000 rpm6 - 9V (AC range)
0.2 msSEF722W
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-107

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
66*2
75L
LCamshaft position sen-
sor (REF)[Engine is running]
IWarm-up condition
IIdle speed0.1 - 0.4V
SEF006W
[Engine is running]
IEngine speed is 2,000 rpm0.1 - 0.4V
SEF007W
67 W/LPower supply for ECM
(Back-up)[Ignition switch ªOFFº]BATTERY VOLTAGE
(11 - 14V)
70 BR/YEngine coolant tem-
perature sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature
71
92Ð
YThrottle position sensor[Engine is running]
IAccelerator pedal released0.35 - 0.65V
[Ignition switch ªONº]
IAccelerator pedal fully depressedApproximately 4V
73 WMass air flow sensor
ground[Engine is running]
IWarm-up condition
IIdle speedApproximately 0V
74 R/LRefrigerant pressure
sensor[Engine is running]
IWarm-up condition
IIdle speed
IAir conditioner is ªONºMore than 1.5V
81 W Knock sensor[Engine is running]
IIdle speed2.0 - 3.0V
85 B/WCamshaft position sen-
sor (Position signal)[Engine is running]
IWarm-up condition
IIdle speedApproximately 2.5V
SEF004W
[Engine is running]
IEngine speed is 2,000 rpmApproximately 2.4V
SEF005W
*2: Models before VIN - P11U0548750
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-108

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
86 OR/WVehicle speed sensor or
ABS actuator and elec-
tric unit (control unit)[Engine is running]
ILift up the vehicle
IIn 2nd gear position
IVehicle speed is 40 km/h (25 MPH)Approximately 2.5V
SEF976W
91 PU/Y CVT check signal[Engine is running]
IIdle speed0 - Approximately 5V
93*1 G/R Data link connector[Engine is running]
lIdle speed (CONSULT-II or GST is discon-
nected)Approximately 0V
101
103
105
107R/B
Y/B
G/B
L/BInjector No. 1
Injector No. 2
Injector No. 3
Injector No. 4[Engine is running]
IWarm-up condition
IIdle speedBATTERY VOLTAGE
(11 - 14V)
SEF011W
[Engine is running]
IWarm-up condition
IEngine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
SEF012W
106
108B/Y ECM ground[Engine is running]
IIdle speed0V
11 0
11 2R
RPower supply for ECM[Ignition switch ªONº]BATTERY VOLTAGE
(11 - 14V)
111 G Sensors' power supply[Ignition switch ªONº]Approximately 5V
114*1 G/W Adjust switch[Engine is running]
IIdle speed0V
115 BR/W Data link connector[Engine is running]
IIdle speed (CONSULT-II or GST is discon-
nected)0 - 10V
11 6Refer to
EL
sectionImmobilizer[Engine is running]
IIdle speedBATTERY VOLTAGE
(11 - 14V)
*1: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONSR20DE
ECM Terminals and Reference Value (Cont'd)
EC-109

DescriptionNLEC1748The specification (SP) value indicates the tolerance of the value that is displayed in ªDATA MONITOR (SPEC)º
mode of CONSULT-II during normal operation of the Engine Control System. When the value in ªDATA MONI-
TOR (SPEC)º mode is within the SP value, the Engine Control System is confirmed OK. When the value in
ªDATA MONITOR (SPEC)º 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 light the
MIL.
The SP value will be displayed for the following three items:
IB/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor-
rection)
IA/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
IMAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionNLEC1749IVehicle driven distance: More than 5,000 km (3,107 miles)
IBarometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm2, 14.25 - 15.12 psi)
IAtmospheric temperature: 20 - 30ÉC (68 - 86ÉF)
IEngine coolant temperature: 75 - 95ÉC (167 - 203ÉF)
ITransmission: Warmed-up*1
IElectrical load: Not applied*2
IEngine speed: Idle
*1: For after the engine is warmed up to normal operating temperature, drive vehicle until ªFLUID TEMP SEº
(CVT fluid temperature sensor signal) indicates less than 0.9V.
*2: Rear window defogger switch, air conditioner switch, lighting switch are ªOFFº. Cooling fans are not oper-
ating. Steering wheel is straight ahead.
SEF601Z
Inspection ProcedureNLEC1750NOTE:
Perform ªDATA MONITOR (SPEC)º mode in maximum scale dis-
play.
1. Perform ªBasic Inspectionº, EC-84.
2. Confirm that the testing conditions indicated above are met.
3. Select ªB/FUEL SCHDLº, ªA/F ALPHA-B1º and ªMAS A/F
SE-B1º in ªDATA MONITOR (SPEC)º mode with CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to ªDiagnostic Procedureº, EC-111.
TROUBLE DIAGNOSIS Ð SPECIFICATION VALUESR20DE
Description
EC-110