Juke F15 (2012 year). Service Repair Manual — part 140
SERVICE DATA AND SPECIFICATIONS (SDS)
EC-449
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Idle Speed
INFOID:0000000006417063
*: Under the following conditions
• A/C switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position
Ignition Timing
INFOID:0000000006417064
*: Under the following conditions
• A/C switch: OFF
• Electric load: OFF (Lights, heater fan & rear window defogger)
• Steering wheel: Kept in straight-ahead position
Calculated Load Value
INFOID:0000000006417065
Mass Air Flow Sensor
INFOID:0000000006417066
*: Engine is warmed up to normal operating temperature and running under no load.
Transmission
Condition
Specification
CVT
No load* (in P or N position)
700
±
50 rpm
M/T
No load* (in Neutral position)
700
±
50 rpm
Transmission
Condition
Specification
CVT
No load* (in P or N position)
15
±
5
°
BTDC
M/T
No load* (in Neutral position)
15
±
5
°
BTDC
Condition
Specification (Using CONSULT-III or GST)
At idle
10 – 35 %
At 2,500 rpm
10 – 35 %
Supply voltage
Battery voltage (11 – 14 V)
Output voltage at idle
1.0 – 1.2V*
Mass air flow (Using CONSULT-III or GST)
1.0 – 4.0 g/sec at idle*
2.0 – 10.0 g/sec at 2,500 rpm*
EC-450
< PRECAUTION >
[HR16DE]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006752405
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.
The vehicle may be equipped with a passenger air bag deactivation switch. Because no rear seat exists where
a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a
rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the
instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is
enabled and could inflate for certain types of collision. When the switch is turned to the OFF position, the pas-
senger air bag is disabled and will not inflate. A passenger air bag OFF indicator on the instrument panel lights
up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected
by the passenger air bag deactivation switch.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
• The vehicle may be equipped with a passenger air bag deactivation switch which can be operated by
the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and
will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled and
could inflate for certain types of collision. After SRS maintenance or repair, make sure the passenger
air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for ser-
vice.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Procedure without Cowl Top Cover
INFOID:0000000006752406
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
PIIB3706J
PRECAUTIONS
EC-451
< PRECAUTION >
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On Board Diagnostic (OBD) System of Engine and CVT
INFOID:0000000006496178
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any repair
or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MI to light up.
• Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Certain systems and components, especially those related to OBD, may use a new style slide-lock-
ing type harness connector. For description and how to disconnect, refer to
• Be sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MI to light up due to the short circuit.
• Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.
• Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
General Precautions
INFOID:0000000006496179
• Always use a 12 volt battery as power source.
• Do not attempt to disconnect battery cables while engine is
running.
• Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative bat-
tery cable. Failure to do so may damage the ECM because
battery voltage is applied to ECM even if ignition switch is
turned OFF.
• Before removing parts, turn ignition switch OFF and then dis-
connect battery ground cable.
• Do not disassemble ECM.
• If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value. So,
engine operation can vary slightly in this case. However, this
is not an indication of a malfunction. Do not replace parts
because of a slight variation.
• If the battery is disconnected, the following emission-related
diagnostic information will be lost within 24 hours.
- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values
• When connecting ECM harness connector (1), fasten (B) it
securely with a lever as far as it will go as shown in the figure.
- ECM (2)
- Loosen (A)
SEF289H
PBIA9222J
PBIB2947E
EC-452
< PRECAUTION >
[HR16DE]
PRECAUTIONS
• When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM pin
terminal, when connecting pin connectors.
• Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge) volt-
age to develop in coil and condenser, thus resulting in dam-
age to ICs.
• Keep engine control system harness at least 10 cm (4 in) away
from adjacent harness, to prevent engine control system mal-
functions due to receiving external noise, degraded operation
of ICs, etc.
• Keep engine control system parts and harness dry.
• Before replacing ECM, perform ECM Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer to
• Handle mass air flow sensor carefully to avoid damage.
• Do not clean mass air flow sensor with any type of detergent.
• Do not disassemble electric throttle control actuator.
• Even a slight leak in the air intake system can cause serious
incidents.
• Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
• After performing each TROUBLE DIAGNOSIS, perform DTC
CONFIRMATION PROCEDURE or Component Function
Check. The DTC should not be displayed in the DTC CONFIRMA-
TION PROCEDURE if the repair is completed. The Component
Function Check should be a good result if the repair is completed.
PBIB0090E
MEF040D
SAT652J
PRECAUTIONS
EC-453
< PRECAUTION >
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• When measuring ECM signals with a circuit tester, never allow
the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
• Do not operate fuel pump when there is no fuel in lines.
• Tighten fuel hose clamps to the specified torque.
• Do not depress accelerator pedal when starting.
• Immediately after starting, do not rev up engine unnecessar-
ily.
• Do not rev up engine just prior to shutdown.
• When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
- Keep the antenna as far as possible from the electronic con-
trol units.
- Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
- Adjust the antenna and feeder line so that the standing-wave
ratio can be kept smaller.
- Be sure to ground the radio to vehicle body.
SEF348N
SEF709Y
SEF708Y
EC-454
< PREPARATION >
[HR16DE]
PREPARATION
PREPARATION
PREPARATION
Special Service Tools
INFOID:0000000006496180
Commercial Service Tools
INFOID:0000000006496181
Tool number
Tool name
Description
KV10118400
Fuel tube adapter
Measuring fuel pressure
KV10120000
Fuel tube adapter
PBIB3043E
JSBIA0410ZZ
Tool name
Description
Oxygen sensor thread
cleaner
Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor
Anti-seize lubricant
i.e.: (Permatex
TM
133AR or equivalent
meeting MIL specifica-
tion MIL-A-907)
Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
AEM488
S-NT779
COMPONENT PARTS
EC-455
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
COMPONENT PARTS
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM : Component Parts Location
INFOID:0000000006496182
1.
.
2.
Battery current sensor
(with battery temperature sensor)
3.
Mass air flow sensor
(with intake air temperature sensor)
4.
Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
5.
EVAP canister purge volume control
solenoid valve
6.
Refrigerant pressure sensor
Refer to
7.
Cooling fan motor
8.
ECM
JSBIA0591ZZ
EC-456
< SYSTEM DESCRIPTION >
[HR16DE]
COMPONENT PARTS
1.
Ignition coil No.4
(with power transistor)
2.
Ignition coil No.3
(with power transistor)
3.
Ignition coil No.2
(with power transistor)
4.
Ignition coil No.1
(with power transistor)
5.
PCV valve
6.
Intake valve timing control solenoid
valve
7.
Engine oil pressure sensor
8.
Engine oil temperature sensor
9.
Knock sensor
10. Engine coolant temperature sensor
11.
Intake camshaft position sensor
12. Exhaust camshaft position sensor
13. Exhaust valve timing control sole-
noid valve
14. Fuel injector No.1 (Front)
15. Fuel injector No.1 (Rear)
16. Fuel injector No.2 (Front)
17. Fuel injector No.2 (Rear)
18. Fuel injector No.3 (Front)
19. Fuel injector No.3 (Rear)
20. Fuel injector No.4 (Front)
21. Fuel injector No.4 (Rear)
21. Crankshaft position sensor
A.
Engine front right side
B.
Left view of the engine
C.
Engine rear right side
JSBIA0592ZZ
COMPONENT PARTS
EC-457
< SYSTEM DESCRIPTION >
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1.
A/F sensor 1
2.
Heated oxygen sensor 2
1.
ASCD steering switch
2.
Fuel level sensor unit, fuel filter and
fuel pump assembly
3.
Brake pedal position switch
4.
Stop lamp switch
5.
Clutch pedal position switch
6.
Accelerator pedal position switch
7.
EVAP canister
8.
Fuel pump control module (FPCM)
JSBIA0593ZZ
JSBIA0594ZZ
EC-458
< SYSTEM DESCRIPTION >
[HR16DE]
COMPONENT PARTS
ENGINE CONTROL SYSTEM : Component Description
INFOID:0000000006496183
A.
Under of right side second seat
B.
Periphery of pedals
C.
Under of left side fuel tank
D.
Behind the luggage side lower finish-
er LH
: Vehicle front
Component
Reference
ECM
A/F sensor 1
EC-459, "Air Fuel Ratio Sensor 1"
A/F sensor 1 heater
EC-459, "Air Fuel Ratio Sensor 1 Heater"
Accelerator pedal position sensor
EC-459, "Accelerator Pedal Position Sensor"
ASCD steering switch
EC-459, "ASCD Steering Switch"
Battery current sensor
EC-460, "Battery Current Sensor (With Battery Temperature Sen-
sor)"
Battery temperature sensor
EC-460, "Battery Current Sensor (With Battery Temperature Sen-
sor)"
Brake pedal position switch
EC-467, "Stop Lamp Switch & Brake Pesal Position Switch"
Clutch pedal position switch
EC-461, "Clutch Pedal Position Switch"
Cooling fan motor
Crankshaft position sensor
EC-461, "Crankshaft Position Sensor"
Electric throttle control actuator
EC-462, "Electric Throttle Control Actuator"
Engine coolant temperature sensor
EC-462, "Engine Coolant Temperature Sensor"
Engine oil pressure sensor
EC-462, "Engine Oil Pressure Sensor"
Engine oil tenperature sensor
EC-462, "Engine Oil Temperature Sensor"
EVAP canister purge volume control solenoid valve
EC-463, "EVAP Canister Purge Volume Control Solenoid Valve"
Exhaust camshaft position sensor
EC-460, "Camshaft Position Sensor"
Exhaust valve timing control solenoid valve
EC-463, "Exhaust Valve Timing Control Solenoid Valve"
Fuel injector
Fuel pump
Fuel pump control module (FPCM)
EC-464, "Fuel Pump Control Module (FPCM)"
Heated oxygen sensor 2
EC-464, "Heated Oxygen Sensor 2"
Heated oxygen sensor 2 heater
EC-464, "Heated Oxygen Sensor 2 Heater"
Ignition coil (with power transistor)
EC-465, "Ignition Coil With Power Transistor"
Intake air temperature sensor
EC-465, "Intake Air Temperature Sensor"
Intake camshaft position sensor
EC-460, "Camshaft Position Sensor"
Intake valve timing control solenoid valve
EC-466, "Intake Valve Timing Control Solenoid Valve"
Knock sensor
Mass air flow sensor
EC-466, "Mass Air Flow Sensor"
PCV valve
EC-469, "Positive Crankcase Ventilation"
Refrigerant pressure sensor
EC-467, "Refrigerant Pressure Sensor"
Stop lamp switch
EC-467, "Stop Lamp Switch & Brake Pesal Position Switch"
Throttle control motor
EC-467, "Throttle Control Motor"
Throttle control motor relay
EC-467, "Throttle Control Motor Relay"
Throttle position sensor
COMPONENT PARTS
EC-459
< SYSTEM DESCRIPTION >
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Accelerator Pedal Position Sensor
INFOID:0000000006496184
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signals to the ECM.
The ECM judges the current opening angle of the accelerator pedal
from these signals and controls the throttle control motor based on
these signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
Air Fuel Ratio Sensor 1
INFOID:0000000006496185
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of about 800
°
C
(1,472
°
F).
Air Fuel Ratio Sensor 1 Heater
INFOID:0000000006496186
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element within the specified range.
ASCD Steering Switch
INFOID:0000000006496189
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
Refer to
EC-477, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description"
function.
PBIB1741E
JMBIA0112GB
PBIB3354E
Sensor
Input Signal to ECM
ECM function
Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine speed
Air fuel ratio (A/F) sensor 1
heater control
Air fuel ratio (A/F) sensor 1
heater
Mass air flow sensor
Amount of intake air
EC-460
< SYSTEM DESCRIPTION >
[HR16DE]
COMPONENT PARTS
Battery Current Sensor (With Battery Temperature Sensor)
INFOID:0000000006635082
OUTLINE
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator.
Based on sensor signals, ECM judges whether or not the power
generation voltage variable control is performed. When performing
the power generation voltage variable control, ECM calculates the
target power generation voltage based on the sensor signal. And
ECM sends the calculated value as the power generation command
value to IPDM E/R. For the details of the power generation voltage
variable control, refer to
CHG-9, "POWER GENERATION VOLTAGE
VARIABLE CONTROL SYSTEM : System Description (Gasoline
Engine Models)"
CAUTION:
Never connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
BATTERY CURRENT SENSOR
The battery current sensor is installed to the battery negative cable. The sensor measures the charging/dis-
charging current of the battery.
BATTERY TEMPERATURE SENSOR
Battery temperature sensor is integrated in battery current sensor.
The sensor measures temperature around the battery.
The electrical resistance of the thermistor decreases as temperature
increases.
<Reference data>
*: These data are reference values and are measured between battery temperature
sensor signal terminal and sensor ground.
Camshaft Position Sensor
INFOID:0000000006496190
The camshaft position sensor senses the protrusion of camshaft to
identify a particular cylinder. The camshaft position sensor senses
the piston position.
When the crankshaft position sensor system becomes inoperative,
the camshaft position sensor provides various controls of engine
parts instead, utilizing timing of cylinder identification signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
JPBIA3262ZZ
Temperature [
°
C (
°
F)]
Voltage
*
(V)
Resistance (k
Ω
)
25 (77)
3.333
1.9 - 2.1
90 (194)
0.969
0.222 - 0.258
SEF012P
PBIA9209J
COMPONENT PARTS
EC-461
< SYSTEM DESCRIPTION >
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ECM receives the signals as shown in the figure.
Clutch Pedal Position Switch
INFOID:0000000006496191
When the clutch pedal is depressed, the clutch pedal position switch turns OFF and the clutch pedal position
switch signal is sent to the ECM. The ECM judges the clutch pedal conditions via the signal (ON or OFF).
Cooling Fan
INFOID:0000000006496192
Cooling fan operates at low and high speed when the current flows in the cooling fan motor.
Refer to
EC-479, "COOLING FAN CONTROL : System Description"
for cooling fan operation.
Crankshaft Position Sensor
INFOID:0000000006496193
The crankshaft position sensor is located on the cylinder block rear
housing facing the gear teeth (cogs) of the signal plate at end of the
crankshaft. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
ECM receives the signals as shown in the figure.
ECM
INFOID:0000000006496194
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
JMBIA0714GB
PBIA9209J
JMBIA0714GB
PBIA9222J
EC-462
< SYSTEM DESCRIPTION >
[HR16DE]
COMPONENT PARTS
Electric Throttle Control Actuator
INFOID:0000000006496195
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle valve in response to driving conditions via the throttle control motor.
Engine Coolant Temperature Sensor
INFOID:0000000006496196
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
<Reference data>
*: These data are reference values and are measured between ECM terminals 38
(Engine coolant temperature sensor signal) and 44.
Engine Oil Pressure Sensor
INFOID:0000000006635083
The engine oil pressure (EOP) sensor is detects engine oil pressure
and transmits a voltage signal to the ECM.
Engine Oil Temperature Sensor
INFOID:0000000006635084
The engine oil temperature sensor is used to detect the engine oil
temperature. The sensor modifies a voltage signal from the ECM.
The modified signal returns to the ECM as the engine oil tempera-
ture input. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
SEF594K
Engine coolant temperature [
°
C (
°
F)]
Voltage* (V)
Resistance (k
Ω
)
–10 (14)
4.4
7.0 - 11.4
20 (68)
3.5
2.35 - 2.73
50 (122)
2.2
0.68 - 1.00
90 (194)
0.9
0.236 - 0.260
SEF012P
JSBIA0292ZZ
SEF594K
COMPONENT PARTS
EC-463
< SYSTEM DESCRIPTION >
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<Reference data>
*: These data are reference values and are measured between ECM terminals.
EVAP Canister Purge Volume Control Solenoid Valve
INFOID:0000000006496197
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
Exhaust Valve Timing Control Solenoid Valve
INFOID:0000000006635085
Exhaust valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The exhaust valve timing control solenoid valve changes the oil
amount and direction of flow through exhaust valve timing control
unit or stops oil flow.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the exhaust valve angle at the control
position.
Fuel Injector
INFOID:0000000006496198
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Engine oil temperature
[
°
C (
°
F)]
Voltage
*
(V)
Resistance (k
Ω
)
–10 (14)
4.4
7.0 - 11.4
20 (68)
3.5
2.1 - 2.9
50 (122)
2.2
0.68 - 1.00
90 (194)
0.9
0.236 - 0.260
110 (230)
0.6
0.143 - 0.153
SEF012P
JSBIA0651ZZ
JSBIA0652ZZ
JSBIA0742ZZ
EC-464
< SYSTEM DESCRIPTION >
[HR16DE]
COMPONENT PARTS
Fuel Pump
INFOID:0000000006496199
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for a few seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel
pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.
Fuel Pump Control Module (FPCM)
INFOID:0000000006734942
The fuel pump control module (FPCM) controls the discharging vol-
ume of the fuel pump by transmitting the FPCM control signals (Low/
Mid/High) depending on driving conditions.
Heated Oxygen Sensor 2
INFOID:0000000006496200
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1 V in richer conditions to 0 V in leaner con-
ditions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
Heated Oxygen Sensor 2 Heater
INFOID:0000000006496201
SYSTEM DESCRIPTION
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
Fuel pump control
Fuel pump relay
↓
Fuel pump
Battery
Battery voltage*
Condition
Fuel pump operation
Ignition switch is turned to ON.
Operates for 1 second.
Engine running and cranking
Operates.
When engine is stopped
Stops in 1.5 seconds.
Except as shown above
Stops.
NNBIB0006ZZ
SEF327R
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