Nissan March K13. Instruction — part 144
SYSTEM
EC-37
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
AIR CONDITIONING CUT CONTROL : System Diagram
INFOID:0000000005995404
AIR CONDITIONING CUT CONTROL : System Description
INFOID:0000000005995405
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 through CAN communication line.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.
JSBIA0320GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed
*1
A/C compressor
repuest signal
IPDM E/R
↓
Air conditioner relay
↓
Compressor
Engine coolant temperature sensor
Engine coolant temperature
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage
*1
Refrigerant pressure sensor
Refrigerant pressure
EPS control unit
EPS operation signal
*2
Combination meter
Vehicle speed signal
*2
BCM
A/C ON signal
*2
Blower fan ON signal
EC-38
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
SYSTEM
CAN COMMUNICATION
CAN COMMUNICATION : System Description
INFOID:0000000005995406
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 speed 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 CAN 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-23, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"
munication for detail.
COOLING FAN CONTROL
COOLING FAN CONTROL : System Diagram
INFOID:0000000005995407
COOLING FAN CONTROL : System Description
INFOID:0000000005995408
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 ECM through CAN communication line.
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then control system has 2-step control [HIGH/OFF].
JSBIA0321GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed
*1
Cooling fan
speed request
signal
IPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Engine coolant temperature sensor
Engine coolant temperature
Refrigerant pressure sensor
Refrigerant pressure
Battery
Battery voltage
*1
Combination meter
Vehicle speed signal
*2
BCM
A/C ON signal
*2
Blower fan ON signal
SYSTEM
EC-39
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
EGR SYSTEM
EGR SYSTEM : System Diagram
INFOID:0000000005995409
JSBIA0415GB
Cooling fan speed
Cooling fan relay
Stop (OFF)
OFF
High (HI)
ON
JSBIA0324GB
EC-40
< SYSTEM DESCRIPTION >
[HR12DE (TYPE 1)]
SYSTEM
EGR SYSTEM : System Description
INFOID:0000000005995410
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 through CAN communication line.
SYSTEM DESCRIPTION
This system controls the volume of EGR flowing from the exhaust manifold to the intake manifold. The EGR
volume control valve adjusts EGR volume by opening and closing the EGR passage. The step motor built in
the EGR volume control valve activates the valve, according to a signal transmitted from ECM. ECM deter-
mines a valve angle, according to driving conditions, such as an engine speed, load, combustion state and
precisely controls EGR volume. EGR is deactivated under the following conditions to enhance drivability:
• Engine starting
• Engine at idle
• Low engine coolant temperature
• high engine coolant temperature
• High engine speed
• Low intake air temperature
• Low battery voltage
EVAPORATIVE EMISSION SYSTEM
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed
*1
Piston position
EGR volume
control
EGR volume control valve
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Intake air temperature sensor
Intake air temperature
Engine coolant temperature sensor
Engine coolant temperature
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Park/neutral position (PNP) switch
PNP signal
Battery
Battery voltage
*1
BCM
A/C ON signal
*2
Blower fan ON signal
*2
Combination meter
Vehicle speed signal
*2
IPDM E/R
High beam status signal
*2
Low beam status signal
*2
Rear window deffoger cotrol signal
*2
1.
EGR volume control valve
2.
EGR temperature sensor
3.
Electric throttle control actuator
PBIA9610J
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст