Nissan Maxima. Instruction — part 396
EC-68
< SYSTEM DESCRIPTION >
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System Diagram
INFOID:0000000010094813
System Description
INFOID:0000000010094814
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Instruction for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE lamp in combination meter. If any malfunction occurs in the
ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE lamp in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch.
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will maintain the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
• CANCEL switch is pressed
• More than 2 switches on ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
JMBIA1616GB
Sensor
Input signal to ECM
ECM function
Actuator
ASCD brake switch
Brake pedal operation
ASCD vehicle speed
control
Electric throttle control
actuator
Stop lamp switch
Brake pedal operation
ASCD steering switch
ASCD steering switch operation
TCM
Gear position
Powertrain revolution*
Unified meter and A/C amp.
Vehicle speed*
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-69
< SYSTEM DESCRIPTION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• Selector lever position is N, P or R
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
• TCS system is operated
• CVT control system has a malfunction. Refer to
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
If MAIN switch is turned to OFF while ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will maintain the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after canceling operation other than pressing the MAIN
switch, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must meet
following conditions.
• Brake pedal is released
• Selector lever position is other than P and N
• Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component Parts Location
INFOID:0000000010094815
ALBIA0603ZZ
EC-70
< SYSTEM DESCRIPTION >
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Electronic controlled engine mount
control solenoid valve
3.
Exhaust valve timing control magnet
retarder (bank 2)
4.
Intake valve timing control solenoid
valve (bank 2)
5.
Knock sensor (bank 1 and 2)
6.
Fuel injector (bank 2)
7.
Ignition coil (with power transistor) and
spark plug (bank 2)
8.
Exhaust valve timing control position
sensor (bank 2)
9.
Crankshaft position sensor (POS)
10. Engine coolant temperature sensor
11. Camshaft position sensor (PHASE)
(bank 2)
12. Transmission range switch
13. Refrigerant pressure sensor
14. ECM
15. Battery current sensor
16. Condenser-2
17. EVAP canister purge volume control
solenoid valve
18. Mass air flow sensor (with intake air
temperature sensor)
19. Camshaft position sensor (PHASE)
(bank 1)
20. EVAP service port
21. Power valve actuator 2
22. Electric throttle control actuator
23. Exhaust valve timing control position
sensor (bank 1)
24. Ignition coil (with power transistor) and
spark plug (bank 1)
25. Fuel injector (bank 1)
26. VIAS control solenoid valve 1 and 2
27. Power valve actuator 1
28. Exhaust valve timing control magnet
retarder (bank 1)
29. Power steering pressure sensor
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-71
< SYSTEM DESCRIPTION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Mas air flow sensor (with intake air
temperature sensor)
2.
Air cleaner case
3.
Engine coolant temperature sensor
(view with engine cover removed)
4.
EVAP canister purge volume control
solenoid valve (view with engine cover
removed)
5.
Power valve actuator 1 (view with en-
gine cover removed)
6.
VIAS control solenoid valve 1
7.
VIAS control solenoid valve 2
8.
Power valve actuator 2
9.
Power steering pressure sensor
10. Tie rod (RH)
11. Camshaft position sensor (PHASE)
(bank 1) (view with air cleaner case re-
moved)
12. Exhaust valve timing control position
sensor (bank 1)
13. Camshaft position sensor (PHASE)
(bank 2) (view with air cleaner case re-
moved)
14. Exhaust valve timing control position
sensor (bank 2)
15. Engine oil temperature sensor
: Vehicle front
ALBIA0604ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст