Nissan Altima HL32 Hybrid. Manual - part 265

EC-44

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ELECTRIC IGNITION SYSTEM

Engine coolant temperature sensor

EC-166, "Description"

Ignition signal

EC-390, "Description"

Knock sensor

EC-249, "Description"

Mass air flow sensor

EC-144, "Description"

Throttle position sensor

EC-169, "Description"

Vehicle speed sensor

EC-310, "Description"

Component

Reference

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

EC-45

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AUTOMATIC SPEED CONTROL DEVICE (ASCD)

System Diagram

INFOID:0000000004211330

System Description

INFOID:0000000004211331

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent through 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.

JMCIA0165GB

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*

EC-46

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AUTOMATIC SPEED CONTROL DEVICE (ASCD)

The ASCD operation status is indicated by two indicators (CRUISE and SET on the information display) on the

combination meter. If any malfunction occurs in ASCD system, SET indicator blinks and ASCD control is deac-

tivated.

NOTE:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

SET OPERATION

Press MAIN switch. (CRUISE is indicated on the information display.)

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 is indicated on the information display.)

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 the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform

the driver by blinking indicators.

• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE indicator may

blink slowly.

When the engine coolant temperature decreases to the normal operating temperature, CRUISE indicator will

stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/

ACCELERATE switch.

• Malfunction for some self-diagnoses regarding ASCD control: SET indicator 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)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

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Component Parts Location

INFOID:0000000004362520

1.

Intake valve timing control solenoid 
valve

2.

Ignition coil (with power transistor) 
and spark plug

3.

Knock sensor,
Crankshaft position sensor (POS)

4.

Air fuel ratio (A/F) sensor 1

5.

Camshaft position sensor (PHASE)

6.

Engine coolant temperature sensor

7.

ECM

8.

Refrigerant pressure sensor

9.

IPDM E/R

10. Mass air flow sensor (with intake 

temperature sensor)

11. EVAP service port

12. Electric throttle control actuator (with 

built in throttle position sensor and 
throttle control motor)

13. EVAP canister purge volume control 

solenoid valve

14. Fuel injector

ALBIA0138ZZ