sensor NISSAN TEANA 2014 Service Manual

EC-578
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
*: This signal is sent to the ECM via the CAN communication line.
SYSTEM DESCRIPTION
The ECM controls the engine mount operation correspondi
ng to the engine speed. The control system has a
2-step control [Soft/Hard]
ELECTRONIC CONTROLLED ENGINE MOUNT LINE DRAWING
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
Engine mount
control Electronic controlled en-
gine mount control solenoid
valve
Combination meter Vehicle speed*
Vehicle condition Engine mount control
Engine speed: Below 950 rpm Soft
Engine speed: Above 950 rpm Hard
JMBIA2161ZZ
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EC-580
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
EVAPORATIVE EMISSION SYSTEM : System Description
INFOID:0000000009462521
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM via the CAN communication line.
JSBIA0371GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed*
1
Piston position
EVAP canister
purge flow control EVAP canister purge vol-
ume control solenoid valve
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
(Mixture ratio fe edback signal)
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
1
Fuel tank temperature sensor Fuel temperature in fuel tank
EVAP control system pressure sensor Pressure in purge line
Combination meter Vehicle speed*
2
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EC-582
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
Manual Air Conditioning System
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*2: Automatic air conditioning system
*3: Manual air conditioning system
SYSTEM DESCRIPTION
ECM calculates the value of signal transmitted from t he accelerator pedal and activates the throttle valve by
transmitting a control signal to the electric throttle c ontrol actuator. This allows the optimum throttle angle and
improves drivability and fuel consumption. In addition, ECM learns the fully closed position every time when
the ignition switch is turned OFF to improv e the accuracy in throttle valve position.
When a malfunction occurs in the throttle control system , the throttle valve is closed by the return spring and
maintains the minimum engine speed by holding a slightly opened condition which is close to the fully opened
condition. This allows the securing of brake syste m, power steering system, and electric system and the
ensuring of the safety.
INTAKE VALVE TIMING CONTROL
JSBIA1917GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed
*1
Throttle controlElectric throttle control
actuator
Engine coolant temperature sensor Engine coolant temperature
Mass air flow sensor Amount of intake air
Intake air temperature sensor Intake air temperature
Accelerator pedal position sensor Accelerator pedal position
Ignition switch Start signal and ignition OFF
Combination meter CAN communi-
cation Vehicle speed signal
A/C auto amp.
*2CAN communi-
cation • A/C ON signal
• Blower fan ON signal
BCM
*3
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SYSTEMEC-583
< SYSTEM DESCRIPTION > [VQ35DE]
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INTAKE VALVE TIMING CONT
ROL : System DescriptionINFOID:0000000009462523
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases c ontinuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft posit ion, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty si gnals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it po ssible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
JPBIA4760GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed and piston position
Intake valve
timing control Intake valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor Engine oil temperature
Engine coolant temperature sensor Engine coolant temperature
Combination meter Vehicle speed signal*
JMBIA0060GB
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EC-584
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
scription
INFOID:0000000009462524
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pres-
sure by the oil pressure warning lamp before the engine becomes damaged.
• When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits
an oil pressure warning lamp signal to the combination meter.The combination meter turns ON the oil pres-
sure warning lamp, according to the signal.
• When detecting a decrease in engine oil pressure at an engine speed 1,000 rpm or more, ECM transmits an
oil pressure warning lamp signal to the combination meter.
The combination meter turns ON the oil pressure warning lamp, according to the signals. When detecting a
decrease in engine oil pressure, ECM cuts fuel if the engine speed exceeds the specified value.
*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.
FUEL FILLER CAP WARNING SYSTEM
JSBIA1588GB
Sensor Input signal to ECM ECM function Actuator
Engine oil pressure sensor Engine oil pressure Engine protection control
• Oil pressure warning lamp
signal
• Fuel cut control Combination meter
(Oil pressure warning lamp)
Crankshaft position sensor
(POS) Engine speed
Engine oil temperature sensor Engine oil temperature
Decrease in engine oil pressure Engine speed Combination meter
Fuel cut
Oil pressure warning lamp
Detection Less than 1,000 rpm ON* NO
1,000 rpm or more ON YES
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SYSTEMEC-585
< SYSTEM DESCRIPTION > [VQ35DE]
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FUEL FILLER CAP WARNING SY
STEM : System DescriptionINFOID:0000000009462525
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Input
*: This signal is sent to the ECM via the CAN communication line.
Output
*: This signal is sent to the combination meter via the CAN communication line.
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and
malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination
meter.
ECM judges a refueled state, based on a fuel leve l signal transmitted from the combination meter.
When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled
state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter
via CAN communication.
When receiving the signal, the combination meter tu rns ON the fuel filler cap warning display.
CAUTION:
Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.
Reset Operation
The fuel filler cap warning lamp tunes OFF, according to any condition listed below:
• Reset operation is performed by operating the me ter control switch on the combination meter.
- When the reset operation is performed, the combination me ter transmits a fuel filler cap warning reset signal
to ECM via CAN communication. ECM transmits a fuel filler cap warning display signal (request for display
OFF) to the combination meter via CAN communication. When receiving the signal, the combination meter
turns OFF the fuel filler cap warning display.
• EVAP leak diagnosis result is normal.
• Fuel refilled.
• DTC erased by using CONSULT.
NOTE:
Unit/Sensor Input signal to ECM ECM function
EVAP control system pressure sensor Pressure in purge line
Fuel filler cap warning control
Combination meter Fuel level sensor signal
*
Fuel filler cap warning reset signal*
JSBIA1456GB
Unit Output signal Actuator
ECM Fuel filler cap warning display signal
*Combination meter
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EC-586
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
MIL turns ON if a malfunction is detected in leak diagnosis
results again at the trip after the fuel filler cap warn-
ing display turns ON/OFF.
VARIABLE INDUCTION AIR SYSTEM
VARIABLE INDUCTION AIR SYSTEM : System DescriptionINFOID:0000000009462526
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
JMBIA1831GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
VIAS controlVIAS control solenoid valve 1
VIAS control solenoid valve 2
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
JMBIA0181GB
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EC-588
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
INTEGRATED CONTROL OF ENGINE, CV T, AND ABS : System Description
INFOID:0000000009462527
Real time communications (signal exchange) among cont rol units (e.g. ECM, CVT, ABS, and combination
meter) via CAN communication optimizes engine torque and lock-up during gear shift and prevents engine
speed from decreasing during deceleration.
ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYS-
TEM
ALTERNATOR POWER GENERATION VOLT AGE VARIABLE CONTROL SYSTEM :
System Description
INFOID:0000000009462528
The alternator power generation voltage variable contro l system controls the amount of power generation,
according to a battery loaded condition. ECM judges a battery condition, according to a signal received from
the battery current sensor which det ects a charge/discharge current. ECM then transmits a signal to IPDM E/
R to command power generation via CAN communication. IPDM E/R transmits a power generation control sig-
nal to the alternator so that the system can contro l the amount of power generation. The voltage of power gen-
eration is lowered during battery low-load conditions and boosted under heavy load conditions. In this way, the
system reduces the engine load thr ough the adequate power generation control.
For details, refer to CHG-10, "System Description"
.
CAN COMMUNICATION
CAN COMMUNICATION : System DescriptionINFOID:0000000009462529
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-32, "CAN COMMUNICA TION SYSTEM : CAN Communication Signal Chart"
, about CAN com-
munication for detail.
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EC-590
< SYSTEM DESCRIPTION >[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOST
IC (OBD) SYSTEM
Diagnosis DescriptionINFOID:0000000009462531
This system is an on board diagnostic system that re cords exhaust emission-related diagnostic information
and detects a sensors/actuator-related malfunction. A ma lfunction is indicated by the malfunction indicator
lamp (MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diag-
nostic tool (GST: Generic Scan Tool).
GST (Generic Scan Tool)INFOID:0000000009462532
When GST is connected with a data link connector equipped on the vehicle side, it will communicate with the
control unit equipped in the vehicle and then enable va rious kinds of diagnostic tests. Refer to EC-590, "Diag-
nosis Description".
NOTE:
Service $0A is not applied for regions where it is not mandated.
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DIAGNOSIS SYSTEM (ECM)EC-599
< SYSTEM DESCRIPTION > [VQ35DE]
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This function allows to read if ECM has completed
the self-diagnoses of major emission control systems and
components. For SRT, refer to EC-596, "DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code"
.
Operation Procedure
1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown blow. • ECM continues to illuminate MIL if all SRT codes are set.
• ECM blinks MIL for about 10 seconds if all SRT codes are not set.
MALFUNCTION WARNING MODE
Description
In this function ECM turns on or blinks MIL when it detects a malfunction in the emission control system com-
ponents and/or the powertrain control components (which affe ct vehicle emissions) to inform the driver that a
malfunction has been detected.
Operation Procedure
1. Turn ignition switch ON.
2. Check that MIL illuminates. If it remains OFF, check MIL circuit. Refer to EC-973, "Diagnosis Procedure"
.
3. Start engine and let it idle. • For two trip detection logic diagnoses, ECM turns on MIL when it detects the same malfunction twice in
the two consecutive driving cycles.
• For 1st trip detection logic diagnoses, ECM turns on MIL when it detects a malfunction in one driving
cycle.
• ECM blinks MIL when it detects a malfunction t hat may damage the three way catalyst (misfire).
SELF-DIAGNOSTIC RESULTS MODE
Description
This function allows to indicate DTCs or 1st trip DTCs stored in ECM according to the number of times MIL is
blinking.
How to Set Self-diagnostic Results Mode
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a mal- function.
• After ignition switch is turned off, ECM is a lways released from the “self-diagnostic results” mode.
1. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quick ly five times within 5 seconds.
• Fully depress the accelerator pedal.
• Fully release the accelerator pedal.
JMBIA1515GB
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