Emission Control Systems; System Purpose - Toyota 22R-E Service Manual

EMISSION CONTROL SYSTEMS

SYSTEM PURPOSE

System
Positive crankcase ventilation
Fuel evaporative emission control
Exhaust gas recirculation
Pulsed secondary air injection
Three –way catalytic converter
Multiport fuel injection *
Remark: *For inspection and repair of the MFl system,refer to the MFI section this manual.
PREPARATION
SST (SPECIAL SERVICE TOOLS)
RECOMMENDED TOOLS
EQUIPMENT
Heater
Thermometer
Tachometer
Torque wrench
Vacuum gauge
SSM (SPECIAL SERVICE MATERIALS)
ENGINE
Abbreviation
PCV
EVAP
EG R
PAIR
TWC
MFI
09843–18024 Diagnosis Check Wire
09082–00015 TOYOTA Electrical Tester
08833–00070 Adhesive 1324,
THREE BOND 1324 or equivalent
– EMISSION CONTROL SYSTEMS
Purpose
Reduces blow–by gas (HC)
Reduces evaporative HC
Reduces NOx
Reduces HC and CO
Reduces HC CO and NOx
Regulates all engine conditions for reduction
of exhaust emissions.
TVV
TVV
TVV
EG1–81