Nissan Tiida C11. Manual — part 521
EC-734
< FUNCTION DIAGNOSIS >
[MR18DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
1.
Crankshaft position sensor (POS)
2.
Comshaft position sensor (PHASE)
3.
EVAP canistor purge volume control
solenoid valve
4.
ECM
5.
Stop lamp switch
6.
Accelerator pedal position sensor
PBIA9902J
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-735
< FUNCTION DIAGNOSIS >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Component Description
INFOID:0000000001161738
1.
ASCD steering switch
2.
MAIN switch
3.
CANCEL switch
4.
SET/COAST switch
5.
RESUME/ACCELEATE switch
6.
Stop lamp switch
7.
ASCD brake switch
8.
ASCD clutch switch
9.
Cluch pedal
ALBIA0273ZZ
Component
Reference
ASCD steering switch
ASCD clutch switch
ASCD brake switch
ASCD indicator
Stop lamp switch
Electric throttle control actuator
EC-736
< FUNCTION DIAGNOSIS >
[MR18DE]
CAN COMMUNICATION
CAN COMMUNICATION
System Description
INFOID:0000000001161739
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-14, "CAN Communication Control Circuit"
, about CAN communication for detail..
COOLING FAN CONTROL
EC-737
< FUNCTION DIAGNOSIS >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
COOLING FAN CONTROL
System Diagram
INFOID:0000000001161740
System Description
INFOID:0000000001161741
INPUT/OUTPUT SIGNAL CHART
*1: The 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 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
JMBIA0177GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
1
Cooling fan
control
IPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Battery
Battery voltage*
1
Combination meter
Vehicle speed*
2
Engine coolant temperature sensor
Engine coolant temperature
BCM
Air conditioner ON signal*
2
Refrigerant pressure sensor
Refrigerant pressure
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