AIR POLLUTION 4-2
NATURAL POLLUTANTS 4-2
INDUSTRIAL POLLUTANTS 4-2
AUTOMOTIVE POLLUTANTS 4-2
TEMPERATURE INVERSION 4-2
HEAT TRANSFER 4-2
AUTOMOTIVE EMISSIONS 4-3
EXHAUST GASES 4-3
HYDROCARBONS 4-3
CARBON MONOXIDE 4-3
NITROGEN 4-3
OXIDES OF SULFUR 4-4
PARTICULATE MATTER 4-4
CRANKCASE EMISSIONS 4-4
EVAPORATIVE EMISSIONS 4-4
EMISSION CONTROLS 4-5
POSITIVE CRANKCASE VENTILATION
(PCV) SYSTEM 4-5
OPERATION 4-5
TESTING 4-5
REMOVAL & INSTALLATION 4-6
EVAPORATIVE EMISSION CONTROLS 4-6
OPERATION 4-6
COMPONENT TESTING 4-6
REMOVAL & INSTALLATION 4-9
EXHAUST GAS RECIRCULATION
SYSTEM 4-9
OPERATION 4-9
COMPONENT TESTING 4-10
REMOVAL & INSTALLATION 4-15
ELECTRONIC ENGINE
CONTROLS 4-17
GENERAL INFORMATION 4-17
ENGINE CONTROL MODULE (ECM) 4-17
OPERATION 4-17
PRECAUTIONS 4-17
REMOVAL & INSTALLATION 4-17
OXYGEN SENSOR 4-18
OPERATION 4-18
TESTING 4-18
REMOVAL & INSTALLATION 4-19
KNOCK SENSOR 4-20
OPERATION 4-20
TESTING 4-20
REMOVAL & INSTALLATION 4-20
IDLE AIR CONTROL (IAC) VALVE 4-20
OPERATION 4-20
TESTING 4-21
REMOVAL & INSTALLATION 4-22
COOLANT TEMPERATURE SENSOR 4-22
OPERATION 4-22
TESTING 4-22
REMOVAL & INSTALLATION 4-23
INTAKE AIR TEMPERATURE (IAT)
SENSOR 4-23
OPERATION 4-23
VOLUME AIRFLOW METER 4-23
OPERATION 4-23
TESTING 4-23
REMOVAL & INSTALLATION 4-24
MASS AIRFLOW METER (MAF) 4-24
OPERATION 4-24
TESTING 4-25
REMOVAL & INSTALLATION 4-25
THROTTLE POSITION SENSOR 4-26
OPERATION 4-26
TESTING 4-26
REMOVAL & INSTALLATION 4-27
ADJUSTMENT 4-28
CAMSHAFT POSITION SENSOR 4-28
OPERATION 4-28
TESTING 4-29
REMOVAL & INSTALLATION 4-29
CRANKSHAFT POSITION SENSOR 4-29
OPERATION 4-29
TESTING 4-29
REMOVAL & INSTALLATION 4-29
COMPONENT LOCATIONS 4-30
TROUBLE CODES 4-31
GENERAL INFORMATION 4-31
DATA LINK CONNECTOR (DLC) 4-31
READING CODES 4-32
2TZ-FE ENGINE 4-32
2TZ-FZE ENGINE 4-33
CLEARING CODES 4-33
2TZ-FE ENGINE 4-33
2TZ-FZE ENGINE 4-34
VACUUM DIAGRAMS 4-39CONTROLS
. '. .AIR POLLUTION 4-2
AUTOMOTIVE EMISSIONS 4-3
- EMISSION CONTROLS 4-5
ELECTRONIC ENGINE CONTROLS 4-17
COMPONENT LOCATIONS 4-30
TROUBLE CODES 4-31
/-•/-'" ••••.• VACUUM DIAGRAMS 4-39