2006 TOYOTA RAV4 catalytic converter

ENGINE - 2AZ-FE ENGINE EG-4
FEATURES OF 2AZ-FE ENGINE
The 2AZ-FE engine has achieved the following performance through the use of the items listed below.
(1) High performance and reliability
(2) Low noise and vibration
(3) Lightweight and compact design
(4) Good serviceability
(5) Clean emission and fuel economy
Section
Item(1)(2)(3)(4)(5)
Engine
A cylinder block made of aluminum alloy along with a
magnesium alloy die-cast cylinder head cover is used.
Engine
ProperA taper squish shape is used for the combustion chamber.p
A resin gear balance shaft is used.
Vl
A timing chain and chain tensioner are used.
Va l v e
MechanismThe shim-less type valve lifters are used.MechanismThe VVT-i system is used.
A chacoal filter is used in the air cleaner cap.
Intake andIntake manifold made of plastic is used.Intake and
ExhaustThe linkless-type throttle body is used.
SystemA thin-wall ceramic TWC (Three-Way Catalytic converter)
is used.
The fuel returnless system is used.
Fuel
System
Quick connectors are used to connect the fuel hose with the
fuel pipe.
System12-hole type fuel injectors with high atomizing performance
are used.
Ignition
SystemIridium-tipped spark plugs are used.
Charging
SystemThe segment conductor type generator is used.
Starting
SystemPS (Planetary reduction-Segment conductor motor) type
starter is used.
The ETCS-i is used.
Engine
Control
The DIS (Direct Ignition System) makes ignition timing
adjustment unnecessary.
Control
SystemThe non-contact type sensor is used in the throttle position
sensor.
The planar type air-fuel ratio sensor is used.

ENGINE - 2AZ-FE ENGINE
01NEG37Y
Mesh Type Gasket
01NEG38Y
TWC EG-20
4. Intake Manifold
The intake manifold has been made of plastic to reduce the weight and the amount of heat transferred from
the cylinder head. As a result, it has become possible to reduce the intake air temperature and improve the
intake volumetric efficiency.
A mesh type gasket is used, in order to reduce the intake noise.
5. Exhaust Manifold
A stainless steel exhaust manifold is used for improving the warm-up of TWC (Three-Way Catalytic
converter) and for weight reduction.

ENGINE - 2GR-FE ENGINEEG-71
FEATURES OF 2GR-FE ENGINE
The 2GR-FE engine has achieved the following performance through the use of the items listed below.
(1) High performance and reliability
(2) Low noise and vibration
(3) Lightweight and compact design
(4) Good serviceability
(5) Clean emission and fuel economy
Item
(1)(2)(3)(4)(5)
A steel laminate type cylinder head gasket is used.
An upright intake port is used.
EngineA taper squish shape is used for combustion chamber.Engine
ProperA cylinder block made of aluminum alloy is used.Proper
The skirt portion of the piston is applied with resin to
reduce friction.
An oil pan No. 1 made of aluminum alloy is used.
The Dual VVT-i (Variable Valve Timing-intelligent)
system is used.
Va l v e
Mh i
Hydraulic lash adjusters are used.
MechanismTiming chains and chain tensioners are used.
Roller rocker arms are used.
Lubrication
SystemAn oil filter with a replaceable element is used.
Cooling SystemThe TOYOTA Genuine SLLC (Super Long Life Coolant)Cooling SystemThe TOYOTA Genuine SLLC (Super Long Life Coolant)
is used for the engine coolant.
The linkless-type throttle body is used.
Intake andThe intake air chamber made of plastic is used.Intake and
Exhaust
S
A stainless steel exhaust manifold is used.
SystemAn ultra thin-wall, high-cell density ceramic type TWC
(Three-Way Catalytic converter) is used.
The fuel delivery pipe made of plastic is used.
Fuel SystemA compact 12-hole type injector is used.Fuel SystemQuick connectors are used to connect the fuel hose with
the fuel pipe.
Ignition System
The DIS (Direct Ignition System) makes ignition timing
adjustment unnecessary.
Ignition System
The long-reach type spark plugs are used.
(Continued)

ENGINE - 2GR-FE ENGINE
01MEG14Y
TWC
Right Bank Exhaust
ManifoldTWC
Left Bank Exhaust
ManifoldUltra
Thin-Wall
01MEG16Y
Exhaust Front PipeExhaust Center PipeTailpipe
Sub Muffler
Ball Joint
Main Muffler
TWC
Ball Joint
Spring
Bolt
Gasket Ball JointEG-93
6. Exhaust Manifold
A stainless steel exhaust manifold with an integrated TWC (Three-Way Catalytic converter) is used for
warm-up of the TWC and for weight reduction.
An ultra thin-wall, high-cell density, ceramic type TWC is used. This TWC is incorporated on each of the
right and left banks.
This TWC improves exhaust emissions by optimizing the cells density and the wall thickness.
7. Exhaust Pipe
The exhaust pipe is made of stainless steel for improved rust resistance.
A thin-wall, ceramic type TWC is used.
Ball joints are used at two places: one at the exhaust center pipe joint, and the other between the exhaust
center pipe and the tailpipe. As a result, a simple construction and reliability are realized.

INTRODUCTION – TERMSIN–49
IN
IAT Intake Air Temperature Intake or Inlet Air Temperature
ICM Ignition Control Module -
IFI Indirect Fuel Injection Indirect Injection (IDL)
IFS Inertia Fuel-Shutoff -
ISC Idle Speed Control -
KS Knock Sensor Knock Sensor
MAF Mass Airflow Air Flow Meter
MAP Manifold Absolute Pressure Manifold Pressure Intake Vacuum
MC Mixture ControlElectric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDP Manifold Differential Pressure -
MFI Multiport Fuel Injection Electronic Fuel Injection (EFI)
MIL Malfunction Indicator Lamp Check Engine Lamp
MST Manifold Surface Temperature -
MVZ Manifold Vacuum Zone -
NVRAM Non-Volatile Random Access Memory -
O2S Oxygen Sensor Oxygen Sensor, O2 Sensor (O2S)
OBD On-Board Diagnostic On-Board Diagnostic System (OBD)
OC Oxidation Catalytic Converter Oxidation Catalyst Converter (OC), CCo
OL Open Loop Open Loop
PAIR Pulsed Secondary Air Injection Air Suction (AS)
PCM Powertrain Control Module -
PNP Park/Neutral Position -
PROM Programmable Read Only Memory -
PSP Power Steering Pressure -
PTOX Periodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAM Random Access Memory Random Access Memory (RAM)
RM Relay Module -
ROM Read Only Memory Read Only Memory (ROM)
RPM Engine Speed Engine Speed
SC Supercharger Supercharger
SCB Supercharger Bypass E-ABV
SFI Sequential Multiport Fuel Injection Electronic Fuel Injection (EFI), Sequential Injection
SPL Smoke Puff Limiter -
SRI Service Reminder Indicator -
SRT System Readiness Test -
ST Scan Tool -
TB Throttle Body Throttle Body
TBI Throttle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TC Turbocharger Turbocharger
TCC Torque Converter Clutch Torque Converter
TCM Transmission Control Module Transmission ECU, ECT ECU
TP Throttle Position Throttle Position
TR Transmission Range -
TVV Thermal Vacuum ValveBimetallic Vacuum Switching Valve (BVSV)
Thermostatic Vacuum Switching Valve (TVSV) SAE
ABBREVIATIONSSAE TERMS TOYOTA TERMS ( )-ABBREVIATIONS

IN–50INTRODUCTION – TERMS
IN
TWC Three-Way Catalytic ConverterThree-Way Catalytic (TWC)
Manifold Converter
CCRO
TWC+OC Three-Way + Oxidation Catalytic Converter CCR + CCo
VAF Volume Airflow Air Flow Meter
VR Voltage Regulator Voltage Regulator
VSS Vehicle Speed Sensor Vehicle Speed Sensor
WOT Wide Open Throttle Full Throttle
WU-OC Warm Up Oxidation Catalytic Converter -
WU-TWC Warm Up Three-Way Catalytic Converter -SAE
ABBREVIATIONSSAE TERMS TOYOTA TERMS ( )-ABBREVIATIONS

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–63
ES
P0352 Ignition Coil "B"
Primary / Secondary
Circuit- Same as DTC
P0351Comes on DTC storedES-183
P0353 Ignition Coil "C"
Primary / Secondary
Circuit- Same as DTC
P0351Comes on DTC storedES-183
P0354 Ignition Coil "D"
Primary / Secondary
Circuit- Same as DTC
P0351Comes on DTC storedES-183
P0420 Catalyst System
Efficiency Below
Threshold (Bank 1)- Front exhaust pipe
(with Three-Way
Catalytic Converter)
- Gas leakage from
exhaust system
- A/F sensor (sensor
1)
- HO2 sensor (sensor
2)Comes on DTC storedES-191
P043E Evaporative Emission
System Reference
Orifice Clog Up- Canister pump
module (Reference
orifice, leak detection
pump, vent valve)
- Connector/wire
harness (Canister
pump module - ECM)
- EVAP system hose
(pipe from air inlet
port to canister pump
module, canister
filter, fuel tank vent
hose)
- ECMComes on DTC storedES-198
P043F Evaporative Emission
System Reference
Orifice High Flow- Same as DTC
P043EComes on DTC storedES-198
P0441 Evaporative Emission
Control System
Incorrect Purge Flow- Purge VSV
- Connector/wire
harness (Purge VSV
- ECM)
- Canister pump
module
- Leakage from EVAP
system
- Leakage from EVAP
line (Purge VSV -
Intake manifold)
- ECMComes on DTC storedES-203
P0450 Evaporative Emission
Control System
Pressure Sensor /
Switch- Canister pump
module
- EVAP system hose
(pipe from air inlet
port to canister pump
module, canister
filter, fuel tank vent
hose)
- ECMComes on DTC storedES-210 DTC No. Detection Item Trouble Areas MIL Memory See page

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–81
ES
HINT:
• Although the DTC titles say oxygen sensor, these DTCs relate to the Air-Fuel Ratio (A/F) sensor.
• Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and
located near the engine assembly.
DESCRIPTION
Refer to DTC P2195 (see page ES-292).
HINT:
• When either of these DTCs is set, the ECM enters fail-safe mode. The ECM turns off the A/F sensor
heater in fail-safe mode. Fail-safe mode continues until the ignition switch is turned OFF.
• The ECM provides a pulse width modulated control circuit to adjust the current through the heater. The
A/F sensor heater circuit uses a relay on the B+ side of the circuit.
DTC P0031Oxygen (A/F) Sensor Heater Control Circuit
Low (Bank 1 Sensor 1)
DTC P0032Oxygen (A/F) Sensor Heater Control Circuit
High (Bank 1 Sensor 1)
DTC No. DTC Detection Conditions Trouble Areas
P0031Air-Fuel Ratio (A/F) sensor heater current less than 0.8 A
(1 trip detection logic)• Open in A/F sensor heater circuit
• A/F sensor heater (sensor 1)
• Integration relay (EFI MAIN relay)
•ECM
P0032Air-Fuel Ratio (A/F) sensor heater current more than 10 A
(1 trip detection logic)• Short in A/F sensor heater circuit
• A/F sensor heater (sensor 1)
• Integration relay (EFI MAIN relay)
•ECM
A127244E01