Nissan Maxima. Manual - part 396

 

  Index      Nissan     Nissan Maxima (2009-2014 year) - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  394  395  396  397   ..

 

 

Nissan Maxima. Manual - 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 Manual 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 

EC-437, "Description"

.

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

 

 

 

 

 

 

 

Content   ..  394  395  396  397   ..