ESP NISSAN ALMERA 2001 Manual Online

DescriptionNJEC0660SYSTEM DESCRIPTIONNJEC0660S01
Sensor Input signal to ECM ECM function Actuator
Vehicle speed sensor Vehicle speed
Cooling fan
controlCooling fan relay Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ªONº signal
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, air condi-
tioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
OPERATIONNJEC0660S02
SEF421Z
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0661Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
AIR COND SIG+Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
COOLING FAN+When cooling fan is stopped. OFF
+When cooling fans operate at low speed. LOW
+When cooling fans operate at high speed. HIGH
ECM Terminals and Reference ValueNJEC0662Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA(DC Voltage)
219 LG/R Cooling fan relay (Low)[Engine is running]
+Cooling fans are not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
+Cooling fans are operatingApproximately 0.1V
DTC P1217 OVER HEATYD
Description
EC-730

DescriptionNJEC0760SYSTEM DESCRIPTIONNJEC0760S01
Sensor Input Signal to ECMECM
Func-
tionActuator
Crankshaft position sensor
(TDC)Engine speed
Glow
controlGlow lamp,
Glow relay
¯
Glow plugs Engine coolant tempera-
ture sensorEngine coolant tem-
perature
When engine coolant temperature is more than approximately
75ÉC (167ÉF), the glow relay turns off.
When coolant temperature is lower than approximately 75ÉC
(167ÉF):
+Ignition switch ON
After ignition switch has turned to ON, the glow relay turns ON
for a certain period of time in relation to engine coolant
temperature, allowing current to flow through glow plug.
+Cranking
The glow relay turns ON, allowing current to flow through glow
plug.
+Starting
After engine has started, current continues to flow through
glow plug (after-glow mode) for a certain period in relation to
engine coolant temperature.
The glow indicator lamp turns ON for a certain period of time in
relation to engine cooalnt temperature at the time glow relay is
turned ON.
SEF376Y
COMPONENT DESCRIPTIONNJEC0760S02Glow PlugNJEC0760S0201The glow plug is provided with a ceramic heating element to obtain
a high-temperature resistance. It glows in response to a signal sent
from the ECM, allowing current to flow through the glow plug via
the glow relay.
GLOW CONTROL SYSTEMYD
Description
EC-806

DescriptionNJEC0764SYSTEM DESCRIPTIONNJEC0764S01
Sensor Input Signal to ECM ECM Function Actuator
Electronic controlled fuel injection pump Fuel injection signal
EGR volume con-
trolEGR volume control
valve Crankshaft position sensor (TDC) Engine speed
Vehicle speed sensor Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator position sensor Accelerator position
Mass air flow sensor Amount of intake air
Air conditioner switch Air conditioner operation
Electrical load Electrical load signal
This system controls flow rate of EGR led from exhaust manifold
to intake manifold. The opening of the EGR by-pass passage in the
EGR volume control valve changes to control the flow rate. A
built-in step motor moves the valve in steps corresponding to the
ECM output pulses. The opening of the valve varies for optimum
engine control. The optimum value stored in the ECM is determined
by considering various engine conditions.
The EGR volume control valve remains close under the following
conditions.
+Engine stopped
+Engine starting
+Low engine coolant temperature
+Excessively high engine coolant temperature
+High engine speed
+Wide open throttle
SEF908Y
SEF411Y
COMPONENT DESCRIPTIONNJEC0764S02EGR Volume Control ValveNJEC0764S0201The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the
ECM. Two windings are turned ON and OFF in sequence. Each
time an ON pulse is issued, the valve opens or closes, changing
the flow rate. When no change in the flow rate is needed, the ECM
does not issue the pulse signal. A certain voltage signal is issued
so that the valve remains at that particular opening.
EGR VOLUME CONTROL SYSTEMYD
Description
EC-815

HARNESS CONNECTOR (SLIDE-LOCKING TYPE)=NJEL0003S02+A new style slide-locking type connector is used on certain systems and components, especially those
related to OBD.
+The slide-locking type connectors help prevent incomplete locking and accidental looseness or disconnec-
tion.
+The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the illustra-
tion below.
CAUTION:
+Do not pull the harness or wires when disconnecting the connector.
+Be careful not to damage the connector support bracket when disconnecting the connector.
[Example]
SEL769V
HARNESS CONNECTOR
Description (Cont'd)
EL-7

CEL083
InspectionNJEL0007FUSENJEL0007S01+If fuse is blown, be sure to eliminate cause of problem
before installing new fuse.
+Use fuse of specified rating. Never use fuse of more than
specified rating.
+Do not partially install fuse; always insert it into fuse
holder properly.
+Remove fuse for ªELECTRICAL PARTS (BAT)º if vehicle is
not used for a long period of time.
SEL165W
FUSIBLE LINKNJEL0007S02A melted fusible link can be detected either by visual inspection or
by feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:
+If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of
problem.
+Never wrap outside of fusible link with vinyl tape. Impor-
tant: Never let fusible link touch any other wiring harness,
vinyl or rubber parts.
SBF284E
CIRCUIT BREAKERNJEL0007S03For example, when current is 30A, the circuit is broken within 8 to
20 seconds.
SEL109W
CIRCUIT BREAKER (PTC THERMISTOR TYPE)NJEL0007S04The PTC thermister generates heat in response to current flow. The
temperature (and resistance) of the thermister element varies with
current flow. Excessive current flow will cause the element's tem-
perature to rise. When the temperature reaches a specified level,
the electrical resistance will rise sharply to control the circuit cur-
rent.
Reduced current flow will cause the element to cool. Resistance
falls accordingly and normal circuit current flow is allowed to
resume.
POWER SUPPLY ROUTING
Inspection
EL-38

System Description/Sedan=NJEL0391Power is supplied at all times
+from 30A fusible link (letterE, located in the fuse and fusible link box)
+to circuit breaker terminal 1
+through circuit breaker terminal 2
+to power window relay terminal 5.
With ignition switch in ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to power window relay terminal 1.
Ground is supplied to power window relay terminal 2
+through body grounds M28 and M67.
The power window relay is energized and power is supplied
+through power window relay terminal 3
+to power window main switch terminal 1,
+to front power window sub-switch terminal 5,
+to rear power window sub-switch LH and RH terminals 5 (models with rear power window).
MANUAL OPERATIONNJEL0391S01Front Door (Driver Side)NJEL0391S0101Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
WINDOW UP
When the driver's window switch in the power window main switch is pressed in the up position, power is
supplied
+through power window main switch terminal 9
+to driver side power window regulator terminal 2.
Ground is supplied
+through power window main switch terminal 8
+to driver side power window regulator terminal 1.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the driver's window switch in the power window main switch is pressed in the down position, power is
supplied
+through power window main switch terminal 8
+to driver side power window regulator terminal 1.
Ground is supplied
+to driver side power window regulator terminal 2
+through power window main switch terminal 9.
Then, the motor lowers the window until the switch is released.
Front Door (Passenger Side)NJEL0391S0102Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
NOTE:
Numbers in parentheses are terminal numbers, when power window switch is pressed in the UP and DOWN
positions respectively.
POWER WINDOW MAIN SWITCH OPERATION
Power is supplied
+through power window main switch (5, 6)
+to front power window sub-switch (3, 4).
POWER WINDOW
System Description/Sedan
EL-298

System Description/Hatchback=NJEL0498Power is supplied at all times
+from 30A fusible link (letterE, located in the fuse and fusible link box)
+to circuit breaker terminal 1
+through circuit breaker terminal 2
+to power window relay terminal 5
With ignition switch in ON or START position, power is supplied
+through 10A fuse [No. 10, located in the fuse block (J/B)]
+to power window relay terminal 1
Ground is supplied to power window relay terminal 2
+through body grounds M28 and M67.
The power window relay is energized and power is supplied
+through power window relay terminal 3
+to power window main switch terminal 1,
+to front power window sub-switch terminal 5,
+to rear power window sub-switch LH and RH terminals 5 (models with rear power window).
MANUAL OPERATIONNJEL0498S01Front Door (Driver Side)NJEL0498S0101Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
WINDOW UP
When the driver's window switch in the power window main switch is pressed in the up position, power is
supplied
+through power window main switch terminal 9
+to driver side power window regulator terminal 1.
Ground is supplied
+through power window main switch terminal 2
+to driver side power window regulator terminal 8.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the driver's window switch in the power window main switch is pressed in the down position, power is
supplied
+through power window main switch terminal 8
+to driver side power window regulator terminal 2.
Ground is supplied
+to driver side power window regulator terminal 1
+through power window main switch terminal 9.
Then, the motor lowers the window until the switch is released.
Front Door (Passenger Side)NJEL0498S0102Ground is supplied
+to power window main switch terminal 3
+through body grounds M28 and M67.
NOTE:
Numbers in parentheses are terminal numbers, when power window switch is pressed in the UP and DOWN
positions respectively.
POWER WINDOW MAIN SWITCH OPERATION
Power is supplied
+through power window main switch (5, 6)
+to front power window sub-switch (3, 4).
POWER WINDOW
System Description/Hatchback
EL-306

Trouble Diagnoses/SedanNJEL0398PRELIMINARY CHECKNJEL0398S01
SEL062X
After performing preliminary check, go to SYMPTOM CHART.
Before starting trouble diagnoses below, perform preliminary check, EL-358.
Symptom numbers in the symptom chart correspond with those of Preliminary check.
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses/Sedan
EL-358

Trouble Diagnoses/HatchbackNJEL0477PRELIMINARY CHECKNJEL0477S01
SEL062X
After performing preliminary check, go to SYMPTOM CHART.
Before starting trouble diagnoses below, perform preliminary check, EL-379.
Symptom numbers in the symptom chart correspond with those of Preliminary check.
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses/Hatchback
EL-379

for example, when the vehicle is in a tunnel, in a parking lot
inside building, under an elevated superhighway or near strong
power lines, the location may not be detected. Turbulent/
electric weather conditions may also affect positioning perfor-
mance. If something is placed on the antenna, the radio wave
from GPS satellites may not be received.
SEL507X
COMPONENT DESCRIPTIONNJEL0516S02NAVI Control UnitNJEL0516S0201+The gyro (angular speed sensor) and the CD-ROM drive are
built-in units that control the navigation functions.
+Signals are received from the gyro, the vehicle speed sensor,
and the GPS antenna. Vehicle location is determined by com-
bining this data with the data contained in the CD-ROM map.
Locational information is shown on liquid crystal display panel.
SEL506X
CD-ROM DriverNJEL0516S0202Maps, traffic control regulations, and other pertinent information
can be easily red from the CD-ROM disc.
Map CD-ROMNJEL0516S0203+The map CD-ROM has maps, traffic control regulations, and
other pertinent information.
+To improve CD-ROM map matching and route determination
functions, the CD-ROM uses an exclusive Nissan format.
Therefore, the use of a CD-ROM provided by other manufac-
turers cannot be used.
SEL690V
Gyro (Angular Speed Sensor)NJEL0516S0204+The oscillator gyro sensor is used to detect changes in vehicle
steering angle.
+The oscillator gyro periodically senses oscillatory variation at
the oscillation terminals. This variation is caused by changes
in the vehicle angular velocity. Voltage variations are sensed
by ceramic voltage sensors at the left and right sides of the
terminals. Vehicle angular velocity corresponds directly with
these changes in voltage.
+The gyro is built into the navigation (NAVI) control unit.
NAVIGATION SYSTEM
System Description (Cont'd)
EL-454