Nissan Sentra manuals

Nissan Sentra Service Manual: Evaporative emission system

EVAPORATIVE EMISSION SYSTEM : System Description

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL CHART


INPUT/OUTPUT SIGNAL CHART

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS) Engine speed* EVAP canister purge flow control EVAP canister purge volume control solenoid valve
Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas (Mixture ratio feedback signal)
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
Combination meter CAN communication Vehicle speed signal

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into


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 and idling.

Starter motor drive control
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Automatic speed control device (ASCD)
AUTOMATIC SPEED CONTROL DEVICE (ASCD) : System Description SYSTEM DIAGRAM BASIC ASCD SYSTEM Refer to Owner's Manual for ASCD operating instructions. Automatic Speed Control Device (ASCD) all ...

Other materials:

P0075 IVT control solenoid valve
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0075 INT/V TIM V/CIR-B1 (Intake valve control solenoid circuit bank 1) An improper voltage is sent to the ECM through intake val ...

P1212 TCS Communication line
Description This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”. Be sure to erase the malfunction information such as DTC not only for †...

Operating range
The Intelligent Key functions can only be used when the Intelligent Key is within the specified operating range from the request switch 1. When the Intelligent Key battery is discharged or strong radio waves are present near the operating location, the Intelligent Key operating range becom ...

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