current TOYOTA RAV4 2006 Service Repair Manual

ENGINE - 2AZ-FE ENGINE
01MEG10Y
Charcoal FilterAir Cleaner Cap
Air Cleaner Element
(Nonwoven Fabric)
Service Tip
The charcoal filter, which is maintenance-free, cannot be removed from the air cleaner cap.
01NEG42Y
Throttle Position
Sensor
Throttle Control MotorEG-19
2. Air Cleaner
A nonwoven, full-fabric type air cleaner element is used.
A charcoal filter, which adsorbs the HC that accumulates in the intake system when the engine is stopped,
is used in the air cleaner cap in order to reduce evaporative emissions.
3. Throttle Body
The linkless-type throttle body is used and it realizes excellent throttle control.
A DC motor with excellent response and minimal power consumption is used for the throttle control motor.
The ECM performs the duty ratio control of the direction and the amperage of the current that flows to
the throttle control motor in order to regulate the opening angle of the throttle valve.

ENGINE - 2AZ-FE ENGINE
01MEG05Y
DEFGGER SWITCH
TA I L L I G H T S W I T C H
STOP LIGHT SWITCH
CURRENT SENSOR
CANISTER PUMP MODULE
CANISTER PRESSURE
SENSOR
TRANSPONDER KEY ECU*
AIRBAG SENSOR ASSEMBLY
EPS ECU
AIR CONDITIONING ECU
SKID CONTROL ECU
DLC3
BATTERYELS1
ELS3
STP
ST1-
THB
VCIB
PPMP
IMI
IMO
CANH,
CANL
TC
TA C H
BATTECMFA N H
FA N L
MPMP
VPMP
PRG
RLO
DF
MREL
+B
WCOOLING FAN CONTROL
COOLING FAN RELAY No.1
COOLING FAN RELAY No.2
COOLING FAN RELAY No.3
EVAPORATIVE EMISSION
CONTROL
CANISTER PUMP MODULE
LEAK DETECTION PUMP
VENT VALVE
GENERATOR
MAIN RELAY
COMBINATION METER
MIL
PURGE VSV
: CANEG-33
*: Models with Engine Immobilizer System

ENGINE - 2AZ-FE ENGINE
01MEG31Y
DLC3
Accelerator Pedal
Position Sensor
Mass Air Flow Meter
(Built-in Intake Air
Temperature Sensor)
VSV (for EVAP)
Battery Current
Sensor
Fuel Pump
Canister Pump Module
Ve n t Va l v e
Leak Detection Pump
Canister Pressure Sensor
ECM
Heated Oxygen Sensor
(Bank 1, Sensor 2) Air Fuel Ratio Sensor
(Bank 1, Sensor 1)
Camshaft Timing
Oil Control ValveInjectorKnock Sensor
Ignition Coil with Igniter
Throttle Position
Sensor
Camshaft Position
Sensor
Water Temperature
Sensor
Crakshaft Position
SensorEG-35
4. Layout of Main Components

ENGINE - 2AZ-FE ENGINE
Throttle Body
Throttle Position
Sensor Portion
Reduction
Gears
Throttle ValveMagnetic Yoke
Hall IC
Throttle Control
Motor A
View from A
Cross Section
01NEG44Y
EG-44
Construction
1) Throttle Position Sensor
The throttle position sensor is mounted on the throttle body, to detect the opening angle of the throttle
valve.
2) Throttle Control Motor
A DC motor with excellent response and minimal power consumption is used for the throttle control
motor. The ECM performs the duty ratio control of the direction and the amperage of the current that
flows to the throttle control motor in order to regulate the opening of the throttle valve.
Operation
1) General
The ECM drives the throttle control motor by determining the target throttle valve opening in accordance
with the respective operating condition.
Non-linear Control
Idle Air Control
TRAC Throttle Control
VSC Coordination Control
Cruise Control

ENGINE - 2AZ-FE ENGINE
199EG47
Injectors
ECMIgnition Coils
Accelerator Pedal
Position Sensor
Main
Sub
Main
Sub
Return to
Prescribed Angle
Throttle ValveReturn
SpringThrottle
Control
Motor
Accelerator Pedal Throttle BodyEG-47
Fail-safe of Throttle Position Sensor
The throttle position sensor is comprised of two (main, sub) sensor circuits. If a malfunction occurs in
either one or both of the sensor circuits, the ECM detects the abnormal signal voltage difference between
these two sensor circuits, cuts off the current to the throttle control motor, and switches to the limp mode.
Then, the force of the return spring causes the throttle valve to return and stay at the prescribed opening
angle. At this time, the vehicle can be driven in the limp mode while the engine output is regulated
through the control of the fuel injection (intermittent fuel-cut) and ignition timing in accordance with the
accelerator opening.
The same control as above is effected if the ECM detects a malfunction in the throttle control motor
system.

ENGINE - 2AZ-FE ENGINE
01NEG13Y
Generator
RegulatorB
DF
RLOECM
Various Electrical
Loads
Battery Current Sensor
Battery Temperature Sensor
Battery Voltage
Battery
Various Sensors and Switches
Throttle Position Sensor
Crankshaft Position Sensor
Accelerator Pedal Position
SensorEG-65
11. Charging Control
General
This system lowers the generated voltage when the vehicle is idling or is being driven at a constant speed,
and raises the generated voltage when the vehicle is decelerating. This reduces the load on the engine as
a result of the electric generation of the generator, thus contributing to the fuel economy of the engine.
During acceleration, this system regulates the generated voltage in order to place the amperage estimation
value close to the target value.
This control consists of the ECM, battery current sensor with a built-in battery temperature sensor,
generator, and various sensors and switches.
The ECM detects driving condition based on signals from various sensors and switches, and detects
charging condition based on signals from the generator, battery current sensor and battery temperature
sensor. Then the ECM outputs signals to the IC regulator to control the genetated voltage of the generator.
The ECM stops the charging control and the generator switches to normal power generation mode under
the following conditions:
Low battery capacity
Low or high battery temparature
Wipers operating or blower motor operating with tail lamp relay ON
System Diagram

ENGINE - 2AZ-FE ENGINE
258AS61 281EG86
Output
Voltage5 (V)
0
-100
Current+100 (A)
Characteristic of Current Sensor
288EG61C
(C) 60
Battery Temperature 0 Resistance(k
)
6 EG-66
Battery Current Sensor
Installed on the negative terminal of the battery, this sensor detects the amount of charging and discharging
amperage of the battery and sends signal to the ECM. Based on this signal, the ECM calculates the battery
capacity. A Hall IC is used for detecting the amount of charging and discharging amperage. The changes
that occur in the magnetic flux density in the core as a result of the charging and amperage of the battery
are converted and output as voltage.
Batter Temperature Sensor
The battery temperature sensor is built into the battery current sensor.
The battery characteristic (battery internal resistance) of taking in current for charging varies according
to battery electrolyte temperature. If the electrolyte temperature is too low or too high, the battery internal
resistance will increase, resulting in early deterioration. To prevent this, the battery temperature sensor
changes its resistance as shown below to detect the temperature.

ENGINE - 2AZ-FE ENGINE
Service Tip
To clear the DTC that is stored in the ECM, use a hand-held tester or disconnect the battery terminal
or remove the EFI fuse for 1 minute or longer.
EG-67
Fail-safe
Due to a failure in the battery current sensor or battery temperature sensor, the ECM may determine the
necessity of performing a fail-safe operation. Then, the ECM stops the charging control and the generator
switches to the normal power generation mode.
When the ECM detects a malfunction in a sensor, the ECM memorizes the DTC (Diagnostic Trouble Code).
The MIL (Malfunction Indicator Lamp) does not illuminate.
DTC Chart
DTC No.Detection ItemDTC No.Detection Item
P0516Battery Temperature Sensor
Circuit LowP1551Battery Current Sensor
Circuit Low
P0517Battery Temperature Sensor
Circuit HighP1552Battery Current Sensor
Circuit High
P0560System VoltageP1602Detection of Battery
P1550Battery Current Sensor
Circuit
12. Diagnosis
When the ECM detects a malfunction, the ECM makes a diagnosis and memorizes the failed section.
Furthermore, the MIL in the combination meter illuminates or blinks to inform the driver.
The ECM will also store the DTCs of the malfunctions. The DTCs can be accessed by the use of the
hand-held tester.
For details, refer to the 2006 RAV4 Repair Manual (Pub. No. RM01M1U).
13. Fail-safe
When a malfunction is detected at any of the sensors, there is a possibility of an engine or other malfunction
occurring if the ECM were to continue to control the engine control system in the normal way. To prevent
such a problem, the fail-safe function of the ECM either relies on the data stored in memory to allow the
engine control system to continue operating, or stops the engine if a hazard is anticipated. For details, refer
to the 2006 RAV4 Repair Manual (Pub. No. RM01M1U).

ENGINE - 2GR-FE ENGINE
01MEG13Y
Air Cleaner Hose with
Resonator
Air Cleaner Cap
Charcoal Filter
Air Cleaner Element
(Nonwoven Fabric)
Air Cleaner Case
Actuator
(For Air Intake Control)
Air Cleaner Inlet
Resonator
285EG32
Throttle Position Sensor
Throttle Control MotorEG-91
2. Air Cleaner
A nonwoven, full-fabric type air cleaner
element is used.
A charcoal filter, which adsorbs the HC that
accumulates in the intake system when the
engine is stopped, is used in the air cleaner case
in order to reduce evaporative emissions. This
filter is maintenance-free.
Along with the use of the air intake control
system, an air intake control valve is provided
on the air cleaner case. For details, see page
EG-128.
Resonators have been provided to reduce the
amount of intake air sound.
3. Throttle Body
A linkless-type throttle body in which the throttle position sensor and the throttle control motor are integrated
is used. It realizes excellent throttle valve control. For details, see page EG-118.
In the throttle control motor, a DC motor with excellent response and minimal power consumption is used.
The ECM performs the duty ratio control of the direction and the amperage of the current that flows to
the throttle control motor in order to regulate the throttle valve angle.

ENGINE - 2GR-FE ENGINE
01MEG06Y
COMBINATION METER
Vehicle Speed Signal
AIR-FUEL RATIO SENSOR
Bank 1, Sensor 1
Bank 2, Sensor 1
HEATED OXYGEN SENSOR
Bank 1, Sensor 2
Bank 2, Sensor 2
CANISTER PUMP MODULE
CANISTER PRESSURE
SENSOR
PARK / NEUTRAL POSITION
SWITCH
TRANSMISSION CONTROL
SWITCH
TRANSPONDER KEY ECU
GENERATOR
BATTERY CURRENT SENSOR
(BUILT-IN BATTERY
TEMPERATURE SENSOR)
WIPER CONTROL SWITCHSPD
A1A
A2A
OX1B
OX2B
PPMP
STA
P, R, N, D
4, L
IMI
IMO
DF
THB VCIB
INHECMACIS
AICV
FC
FPR
HA1A
HA2A
HT1B
HT2B
RLOACIS
ACIS ACTUATOR
AIR INTAKE CONTROL
SYSTEM
VSV
FUEL PUMP CONTROL
CIRCUIT OPENING RELAY
FUEL PUMP RELAY
AIR-FUEL RATIO SENSOR
HEATER CONTROL
AIR-FUEL RATIO SENSOR
HEATER
Bank 1, Sensor 1
Bank 2, Sensor 1
HEATED OXYGEN SENSOR
HEATER CONTROL
HEATED OXYGEN SENSOR
HEATER
Bank 1, Sensor 2
Bank 2, Sensor 2
CHARGING CONTROL
GENERATOR EG-104
(Continued)