Nissan Frontier. Manual — part 367

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

EC-39

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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 depressing 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

• Clutch pedal is released (M/T models)

• A/T selector lever is in position other than P and N positions (A/T models)

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

Component Description

INFOID:0000000009480729

ASCD STEERING SWITCH

Refer to

EC-384

.

BRAKE PEDAL POSITION SWITCH

Refer to

EC-388

and

EC-433

.

CLUTCH PEDAL POSITION SWITCH

Refer to

EC-395

and

EC-436

.

STOP LAMP SWITCH

Refer to

EC-388

,

EC-399

and

EC-433

.

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to

EC-416

.

ASCD INDICATOR

Refer to

EC-437

.

EC-40

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CAN COMMUNICATION

CAN COMMUNICATION

System Description

INFOID:0000000009480730

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle, and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

Refer to

LAN-4, "System Description"

, about CAN communication for detail.

EVAPORATIVE EMISSION SYSTEM

EC-41

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EVAPORATIVE EMISSION SYSTEM

Description

INFOID:0000000009480731

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel

system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.

The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the

vapor is stored there when the engine is not operating or when refueling to the fuel tank.

The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the

engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the

engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is

proportionally regulated as the air flow increases.

EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating.

PBIB3639E

EC-42

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EVAPORATIVE EMISSION SYSTEM

EVAPORATIVE EMISSION LINE DRAWING

PBIB2654E