Nissan Altima HL32 Hybrid. Manual - part 579

DURING COLLISION CONTROL

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1.

Service plug grip

2.

Battery temperature sensor 0

3.

Battery smart unit

4.

SMRG

5.

SMRB

6.

Battery current sensor

7.

Hybrid vehicle converter

8.

Battery temperature sensor 3

9.

Intake air temperature sensor

10. Battery temperature sensor 2

11. Battery temperature sensor 1

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AUTOMATIC SPEED CONTROL DEVICE (ASCD)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

System Diagram

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System Description

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INPUT/OUTPUT SIGNAL CHART

*: This signal is sent 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).

JMCIA0329GB

Input

ECU

Output

Sensor

Signal

Signal

Actuator

Stop lamp switch

Brake pedal operation

Hybrid 

vehicle 

control 

ECU

CRUISE lamp operation*

Combina-

tion meter

ASCD brake switch

Brake pedal operation

SET lamp operation*

Accelerator pedal 
position sensor

Accelerator pedal operation

Torque request

MG 

ECU

Operation

MG1
MG2

PNP switch

Gear position

MG ECU

MG2 speed

Brake ECU

Brake pedal operation*

Stop lamp switch

Brake pedal operation

ECM

ASCD 
request*

Vehicle speed*
Engine power 
request*
Engine speed 
request*

ECM

Operation

Electric 

throttle 
control

actuator

ASCD brake switch

Brake pedal operation

ASCD steering 
switch

ASCD steering switch 
operation

Brake ECU

Vehicle speed*

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

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The hybrid vehicle control ECU receives signals from each switch, sensor, control unit, and maintains constant

vehicle speed by optimizing the use of the engine and motor driving force.

Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunc-

tion occurs in ASCD system, it automatically deactivates control.

NOTE:

Always drive vehicle in 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. (Then SET lamp in combination meter illuminates.)

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 keep 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 at ASCD steering switch are pressed at the same time (Set speed will be cleared)

• Brake pedal is depressed

• Selector lever is changed to N, P, R position

• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed

• TCS system is operated

When any of the following conditions is detected, the hybrid vehicle control ECU will cancel the cruise opera-

tion and inform the driver by blinking indicator lamp.

• Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.

If MAIN switch is turned to OFF during 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 keep the new set speed.

RESUME OPERATION

When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing MAIN switch

is performed, 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 is in other than P and N positions

• Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)

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AUTOMATIC SPEED CONTROL DEVICE (ASCD)

Component Parts Location

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1.

Combination meter

2.

READY operation indicator light

3.

Malfunction indicator light

4.

Master warning light

5.

Data link connector

6.

Steering angle sensor

7.

Stop lamp switch

8.

Accelerator pedal position sensor

9.

ACU (Air bag diagnosis sensor unit)

10. Yaw rate/side G sensor

11. Controller (A/C auto AMP.)

12. Vehicle information display indicator

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