OUTLINE - COMPONENT DESCRIPTIONS (continued)

F-11spec table

Component Descriptions (continued)

Component	Function	Remark
Fuel vapor valve	Prevents fuel from entering canister during vehicle roll over
Fuel filter	Filters particles from fuel
Fuel pump	Provides fuel to injectors	• Operates while engine running • Installed in fuel tank
Igniter	Receives spark signal from engine control unit and generates high voltage in ignition coil Detects high voltage ignition; sends substitute ignition signal to engine control unit
Ignition switch (START position)	Sends engine cranking signal to engine control unit
Injector	Injects fuel into intake port	• Controlled by signals from engine control unit • High-ohmic injector • Single port injector nozzle
Intake air thermosensor	Detects intake air temperature; sends signal to engine control unit	Installed in airflow meter
ISC valve	Controls bypass air amount	• Controlled by duty signal from engine control unit • Controls idle-up
Solenoid valve (Purge control)	Controls evaporative fumes from canister to intake manifold	• Controlled by duty signal from engine control unit
Main relay	Supplies electric current to injectors, engine control unit, etc.
MIL (Malfunction indicator lamp)	Lamp illuminates when input device malfunctions Lamp flashes to indicate malfunction code number, of input and output devices	(TEN) terminal of diagnosis connector (TEN) terminal of diagnosis connector
Neutral switch	Detects in-gear condition; sends signal to engine control unit	Switch ON when in neutral
Oxygen sensor	Detects oxygen concentration; sends signal to engine control unit	Zirconia ceramic and platinum coating
PCV valve	Controls blowby gas amount introduced into engine
P/S pressure switch	Detects P/S operation; sends signal to engine control unit	P/S: ON when steering wheel turned
Pressure regulator	Adjusts fuel pressure supplied to injectors
Resonance chamber	Improves mid range torque characteristics
Stoplight switch	Detects braking operation (deceleration); sends signal to engine control unit
Throttle body	Controls intake air quantity	Integrated throttle sensor, ISC valve, and dashpot
Throttle sensor IDL signal	Detects position of the throttle valve fully closed; sends signal to engine control unit
Throttle sensor POW signal	Detects the throttle valve opening at a preset angle; sends signal to engine control unit
Two-way check valve	Controls pressure in fuel tank
Water thermosensor	Detects coolant temperature; sends signal to engine control unit

Fuel vapor valve

FunctionPrevents fuel from entering canister during vehicle roll over

Remark

Fuel filter

FunctionFilters particles from fuel

Remark

Fuel pump

FunctionProvides fuel to injectors

Remark• Operates while engine running • Installed in fuel tank

Igniter

FunctionReceives spark signal from engine control unit and generates high voltage in ignition coil Detects high voltage ignition; sends substitute ignition signal to engine control unit

Remark

Ignition switch (START position)

FunctionSends engine cranking signal to engine control unit

Remark

Injector

FunctionInjects fuel into intake port

Remark• Controlled by signals from engine control unit • High-ohmic injector • Single port injector nozzle

Intake air thermosensor

FunctionDetects intake air temperature; sends signal to engine control unit

RemarkInstalled in airflow meter

ISC valve

FunctionControls bypass air amount

Remark• Controlled by duty signal from engine control unit • Controls idle-up

Solenoid valve (Purge control)

FunctionControls evaporative fumes from canister to intake manifold

Remark• Controlled by duty signal from engine control unit

Main relay

FunctionSupplies electric current to injectors, engine control unit, etc.

Remark

MIL (Malfunction indicator lamp)

FunctionLamp illuminates when input device malfunctions Lamp flashes to indicate malfunction code number, of input and output devices

Remark(TEN) terminal of diagnosis connector (TEN) terminal of diagnosis connector

Neutral switch

FunctionDetects in-gear condition; sends signal to engine control unit

RemarkSwitch ON when in neutral

Oxygen sensor

FunctionDetects oxygen concentration; sends signal to engine control unit

RemarkZirconia ceramic and platinum coating

PCV valve

FunctionControls blowby gas amount introduced into engine

Remark

P/S pressure switch

FunctionDetects P/S operation; sends signal to engine control unit

RemarkP/S: ON when steering wheel turned

Pressure regulator

FunctionAdjusts fuel pressure supplied to injectors

Remark

Resonance chamber

FunctionImproves mid range torque characteristics

Remark

Stoplight switch

FunctionDetects braking operation (deceleration); sends signal to engine control unit

Remark

Throttle body

FunctionControls intake air quantity

RemarkIntegrated throttle sensor, ISC valve, and dashpot

Throttle sensor IDL signal

FunctionDetects position of the throttle valve fully closed; sends signal to engine control unit

Remark

Throttle sensor POW signal

FunctionDetects the throttle valve opening at a preset angle; sends signal to engine control unit

Remark

Two-way check valve

FunctionControls pressure in fuel tank

Remark

Water thermosensor

FunctionDetects coolant temperature; sends signal to engine control unit

Remark

NOTE

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OUTLINE - COMPONENT DESCRIPTIONS (continued)

Component Descriptions (continued)

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