Nissan Versa Sedan. Manual - part 262

SYSTEM

EC-47

< SYSTEM DESCRIPTION >

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BASIC ASCD SYSTEM

Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed

without depressing accelerator pedal. Driver can be set the vehicle speed in the set speed range.

ECM controls throttle angle of electric throttle control actuator to regulate engine speed.

Operation status of ASCD is indicated in combination meter.

If any malfunction occurs in the ASCD system, it automatically deactivates the ASCD control.

Refer to 

EC-48, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function"

 for ASCD

operating instructions.

CAUTION:

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

ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYS-
TEM
ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM : 
System Description

INFOID:0000000009640511

The alternator power generation voltage variable control system controls the amount of power generation,

according to a battery loaded condition. ECM judges a battery condition, according to a signal received from

the battery current sensor which detects a charge/discharge current. ECM then transmits a signal to IPDM E/

R to command power generation via CAN communication. IPDM E/R transmits a power generation control sig-

nal to the alternator so that the system can control the amount of power generation. The voltage of power gen-

eration is lowered during battery low-load conditions and boosted under heavy load conditions. In this way, the

system reduces the engine load through the adequate power generation control.

For details, refer to 

CHG-7, "System Description"

.

EC-48

< SYSTEM DESCRIPTION >

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OPERATION

OPERATION

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Switch Name and Function

INFOID:0000000009267011

SWITCHES AND INDICATORS

SET SPEED RANGE

ASCD system can be set the following vehicle speed.

SWITCH OPERATION

SET OPERATION

Press MAIN switch. (The CRUISE indicator in combination meter illuminates.)

When vehicle speed reaches a desired speed between approximately 38 km/h (24 MPH) and 144 km/h (90

MPH), press COAST/SET switch.

ACCELERATE OPERATION

If the ACCEL/RES switch is pressed during the 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, the cruise operation is canceled.

- CANCEL switch is pressed

- ASCD MAIN switch is pressed (Set speed is cleared)

- More than 2 switches at ASCD steering switch are pressed at the same time (Set speed is cleared)

- Brake pedal is depressed

- Selector lever is changed to N, P or R position

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

- TCS system is operated

1.

CRUISE indicator 

2.

CANCEL switch

3.

ACCEL/RES switch

4.

COAST/SET switch

5.

ASCD MAIN switch

A.

On the combination meter

B.

On the steering wheel

JPBIA5708ZZ

Minimum speed (Approx.)

Maximum speed (Approx.)

38 km/h (24 MPH)

144 km/h (90 MPH)

Item

Function

CANCEL switch

Cancels the cruise control driving. 

ACCEL/RES switch

• Resumes the set speed.
• Increases speed incrementally during cruise control driving.

COAST/SET switch

• Sets desired cruise speed.
• Decreases speed incrementally during cruise control driving.

ASCD MAIN switch

Master switch to activate the ASCD system.

OPERATION

EC-49

< SYSTEM DESCRIPTION >

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• When the ECM detects any of the following conditions, the ECM cancels the cruise operation and informs

the driver by blinking CRUISE indicator lamp.

- Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE indicator lamp

is blinked slowly.

NOTE:

Engine coolant temperature decreases to the normal operating temperature, CRUISE indicator lamp stop

blinking and the cruise operation is able to work.

- Malfunction for some self-diagnoses regarding ASCD control: CRUISE indicator will blink quickly.

• When ASCD MAIN switch is turned to OFF during the cruise control driving, all of ASCD operations is can-

celed and vehicle speed memory is erased.

COAST OPERATION

When the COAST/SET switch is pressed during the 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 ACCEL/RES switch is pressed after the cancel operation other than pressing ASCD MAIN switch

is performed, vehicle speed is 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 38 km/h (24 MPH) and less than 144 km/h (90 MPH)

EC-50

< SYSTEM DESCRIPTION >

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ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

INFOID:0000000009267012

This system is an on board diagnostic system that records exhaust emission-related diagnostic information

and detects a sensors/actuator-related malfunction. A malfunction is indicated by the malfunction indicator

lamp (MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diag-

nostic tool (GST: Generic Scan Tool).

GST (Generic Scan Tool)

INFOID:0000000009267013

When GST is connected with a data link connector equipped on the vehicle side, it will communicate with the

control unit equipped in the vehicle and then enable various kinds of diagnostic tests. Refer to 

EC-50, "Diag-

nosis Description"

.

NOTE:

Service $0A is not applied for regions where it is not mandated.