EG
ENGINE – 2GR-FE ENGINE
02KEG36TE
EFI MAIN RELAY
BATTERY
DLC3 (Data Link Connector 3)
ACTIVE CONTROL
ENGINE MOUNT ECU*
4
AIRBAG SENSOR
ASSEMBLY
A/C ECU
DISTANCE
CONTROL ECU*
5
CAN GATEWAY ECU
+B, +B2
MREL
BATT, +BM
TACH
TC
CANH
CANL
CAN
(CAN No.1 Bus)
CAN
(CAN No.2 Bus)
Engine
ECU
SKID CONTROL ECU
METER ECU
PRG
ACM*
3
W
CAN+
CAN–
Local CAN
EVAPORATIVE EMISSION CONTROL
VSV (For Purge VSV)
ACTIVE CONTROL ENGINE MOUNT*
3
VSV
COMBINATION METER
Check Engine Warning Light
ECT ECU
EG-99
*
1
: Only for models with smart entry and start system
*
2
: Only for models without smart entry and start system
*
3
: Only for models without power tilt and power telescopic steering column
*
4
: Only for models with power tilt and power telescopic steering column
*
5
: Only for models with dynamic radar type cruise control system
ENGINE – 2GR-FE ENGINE
02KEG37TE
Combination Meter
D Vehicle Speed Signal
D Check Engine Warning Light
Neutral
Start Switch
Engine Switch
Main Body ECU
IG2 Relay*
1
Ignition Switch*
2
Power Steering
Oil Pressure Switch
Electronic Controlled
Transmission Solenoid Valve
Starter Cut Relay
ECT ECU
Battery
Local CAN
Neutral
Start Switch
Circuit Opening
Relay
Accelerator Pedal
Position Sensor
Cooling Fan ECU
DLC3
CAN
(CAN No.1 Bus)
Cooling Fan
Fuel Pump
Stop Light Switch
Engine ECU
EVAP
Valve
Intake Air
Temp. Sensor
Throttle
Control
Motor
VSV*
3
For
Active Control
Engine Mount
Canister
ACIS Actuator
VSV (For
Air Intake
Control)
Air Flow
Meter
Throttle Position
Sensor
Active Control Engine
Mount ECU*
4
Air
Intake Camshaft Timing
Oil Control Valve LH
Injector
Injector
Intake VVT
Sensor LH
Intake Camshaft Timing
Oil Control Valve RH
Intake VVT Sensor RH
Ignition Coil With Igniter
Exhaust VVT Sensor RH
Exhaust Camshaft Timing
Oil Control Valve RH
Exhaust VVT
Sensor LH
Knock
Sensor
TWC
TWC
Exhaust Camshaft
Timing Oil Control
Valve LH
Air Fuel Ratio Sensor
(Bank 1, Sensor 1)
Water Temp.
Sensor
Crankshaft
Position Sensor
Heated Oxygen Sensor
(Bank 1, Sensor 2)
TWC
Heated Oxygen Sensor
(Bank 2, Sensor 2)
Starter Relay
Air Fuel
Ratio Sensor
(Bank 2, Sensor 1)
EG-100
3. Engine Control System Diagram
*
1
: Only for models with smart entry and start system
*
2
: Only for models without smart entry and start system
*
3
: Only for models without power tilt and power telescopic steering column
*
4
: Only for models with power tilt and power telescopic steering column
EG
ENGINE – 2GR-FE ENGINE
285EG49
285EG50
Intake VVT
Sensor LH
Intake Camshaft Timing
Oil Control Valve LH
Ignition Coil
with Igniter
Injector
Water Temp.
Sensor
Air Fuel Ratio Sensor
(Bank 2, Sensor 1)
Exhaust VVT
Sensor LH
Crankshaft
Position Sensor
Exhaust Camshaft
Timing Oil
Control Valve LH
Intake Camshaft Timing
Oil Control Valve RH
Exhaust VVT
Sensor RH
Intake VVT
Sensor RH
Exhaust Camshaft
Timing Oil
Control Valve RH
Air Fuel Ratio Sensor
(Bank 1, Sensor 1)
ACIS Actuator Throttle Position Sensor
Knock Sensor 1
Knock Sensor 2
EG-101
4. Layout of Main Components
ENGINE – 2GR-FE ENGINE
02KEG38Y
VSV
(for Air Intake Control)
Air Cleaner Cap
D Vacuum Tank
Engine
ECU
Air Flow Meter
D Intake Air Temp. Sensor
Fuel Pump
Actuator
(for Air Intake Control)
Heated Oxygen Sensor
(Bank 1, Sensor 2)
Heated Oxygen Sensor
(Bank 2, Sensor 2)
Cooling
Fan ECU
VSV*
1
Vacuum Type*
1
Electric Type*
2
Active Control Engine Mount
Check Engine Warning Light
Stop Light Switch
Accelerator Pedal
Position Sensor
DLC3
Active Control
Engine Mount ECU*
2
LHD Model
EG-102
*
1
: Only for models without power tilt and power telescopic steering column
*
2
: Only for models with power tilt and power telescopic steering column
EG
ENGINE– 2GR-FE ENGINE
EG-103
5.Main Component of Engine Control System
General
The main components of the 2GR-FE engine control system are as follows:
Components Outline Quantity Function
Engine ECU 32-bit CPU 1
The engine ECU optimally controls the EFI ESA and
ISC to suit the operating conditions of the engine in
accordance with the signals provided by the sensors.
Oxygen Sensor
(Bank 1, Sensor 2)
(Bank 2, Sensor 2)
Cup Type
with Heater
2
DThis sensor detects the oxygen concentration in the
exhaust emission by measuring the electromotive
force which is generated in the sensor itself.
DThe basic construction and operation of this sensor
are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-46.
Air Fuel
Ratio Sensor
(Bank 1, Sensor 1)
(Bank 2, Sensor 1)
Planar Type
with Heater
2
DAs with the oxygen sensor, this sensor detects the
oxygen concentration in the exhaust emission.
However, it detects the oxygen concentration in the
exhaust emission linearly.
DThe basic construction and operation of this sensor
are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-46.
Air Flow Meter Hot-wire Type 1
DThis sensor has a built-in hot-wire to directly detect
the intake air mass.
DThe basic construction and operation of this sensor
are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-40.
Crankshaft
Position Sensor
(Rotor Teeth)
Pick-up Coil Type
(36-2)
1
This sensor detects the engine speed and performs the
cylinder identification.
Intake VVT Sensor
LH, RH
(Rotor Teeth)
MRE Type
(3)
2 This sensor performs the cylinder identification.
Exhaust VVT Sensor
LH, RH
(Rotor Teeth)
MRE Type
(3)
2 This sensor performs the cylinder identification.
Water Temperature
Sensor
Thermistor Type 1
This sensor detects the engine coolant temperature by
means of an internal thermistor.
Intake Air
Temperature Sensor
Thermistor Type 1
This sensor detects the intake air temperature by means
of an internal thermistor.
Knock Sensor 1,2
Built-in
Piezoelectric Type
(Flat Type)
2
This sensor detects an occurrence of the engine
knocking indirectly from the vibration of the cylinder
block caused by the occurrence of engine knocking.
Throttle
Position Sensor
No-contact Type 1
DThis sensor detects the throttle valve opening angle.
DThe basic construction and operation of this sensor
are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-43.
Accelerator Pedal
Position Sensor
No-contact Type 1
DThis sensor detects the amount of pedal effort applied
to the accelerator pedal.
DThe basic construction and operation of this sensor
are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-42.
Injector 12-Hole Type 6
The injector is an electromagnetically-operated nozzle
which injects fuel in accordance with signals from the
engine ECU.
ENGINE – 2GR-FE ENGINE
285EG79
Engine
Front
Timing Rotor
Crankshaft
Position Sensor
279EG50
NE Signal Plate (720_ CA)
10_ CA
2 Teeth
Missing
285EG83285EG82
Intake VVT Sensor RH
Timing Rotor
Intake VVT Sensor (Right Bank)
Exhaust VVT Sensor RH
Timing Rotor
Exhaust VVT Sensor (Right Bank)
EG-104
Crankshaft Position Sensor
The timing rotor of the crankshaft consists of 34 teeth, with 2 teeth missing. The crankshaft position sensor
outputs the crankshaft rotation signals every 10_, and the missing teeth are used to determine the
top-dead-center.
Intake and Exhaust VVT Sensors
1) General
The MRE (Magnetic Resistance Element) type intake and exhaust VVT sensors are used. To detect the
camshaft position, a timing rotor that is secured to the camshaft in front of the VVT controller is used
to generate 6 (3 Hi Output, 3 Lo Output) pulses for every 2 revolutions of the crankshaft.
EG
ENGINE – 2GR-FE ENGINE
285EG84
VVT
Sensor
0 V
Crankshaft
Position
Sensor
0 V
VVT Sensor Signal Plate (720_ CA)
180_ CA
60_ CA
60_ CA
180_ CA 120_ CA
120_ CA
360_ CA
360_ CA
10_ CA
EG-105
"
Sensor Output Waveforms
A
2) MRE Type VVT Sensor
D The MRE type VVT sensor consists of an MRE, a magnet and a sensor. The direction of the magnetic
field changes due to the different shapes (protruded and non-protruded portions) of the timing rotor,
which passes by the sensor. As a result, the resistance of the MRE changes, and the output voltage to
the engine ECU changes to Hi or Lo. The engine ECU detects the camshaft position based on this
output voltage.
D The differences between the MRE type VVT sensor and the pickup coil type VVT sensor used on the
conventional model are as follows.
Item
Sensor Type
Item
MRE Pick-up Coil
Signal Output
Constant digital output starts from
low engine speeds.
Analog output changes with the
engine speed.
Camshaft Position
Detection
Detection is made by comparing the
NE signals with the Hi/Lo output
switch timing due to the
protruded/non-protruded portions
of the timing rotor, or made based on
the number of the input NE signals
during Hi/Lo outputs.
Detection is made by comparing the
NE signals with the change of
waveform that is output when the
protruded portion of the timing rotor
passes.
ENGINE – 2GR-FE ENGINE
271EG160
Timing Rotor
Intake VVT
Sensor RH
VCV1
VV1+
VV1–
Engine ECU
Intake VVT Sensor RH
232CH41
Engine
Speed
Sensor
Output
MRE Type
Digital Output
Engine
Speed
Sensor
Output
No Detecting
Analog Output
Pick-up Coil Type
EG-106
"
Wiring Diagram
A
"
MRE Type and Pick-up Coil Type Output Waveform Image Comparison
A
EG
ENGINE– 2GR-FE ENGINE
Service Tip
These knock sensors are mounted in the specific directions and angles as illustrated. To prevent the
right and left bank connectors from being interchanged, make sure to install each sensor in its
prescribed direction.
285EG55
Knock Sensor RH
Engine
Front
Knock Sensor LH
EG-107
Knock Sensor (Flat Type)
DIn the conventional type knock sensor (resonant type), a vibration plate which has the same resonance
point as the knocking frequency of the engine is built in and can detect the vibration in this frequency
band. On the other hand, a flat type knock sensor (non-resonant type) has the ability to detect vibration
in a wider frequency band from about 6 kHz to 15 kHz.
DThe basic construction and operation of this sensor are the same as in the 1AZ-FE and 2AZ-FE engines.
For details, see page EG-44.
ENGINE– 2GR-FE ENGINE
01YEG11Y
Accelerator Pedal
Position Sensor
Throttle ValveThrottle Position Sensor
Throttle Control
Motor
Air Flow Meter
Cruise Control
Switch*
1
Skid Control
ECU
CAN Gateway
ECU*
2
CAN
(CAN No.2 Bus)
CAN
(CAN No.1 Bus)
Distance
Control ECU*
2
Millimeter Wave
Radar Sensor*
2
Engine ECU
Ignition Coil
Fuel Injector
EG-108
6.ETCS-i (Electronic Throttle Control System-intelligent)
General
DIn the conventional throttle body, the throttle valve angle is determined invariably by the amount of the
accelerator pedal effort. In contrast, ETCS-i uses the engine ECU to calculate the optimal throttle valve angle
that is appropriate for the respective driving condition and uses a throttle control motor to control the angle.
DIn case of an abnormal condition, this system transfers to the limp mode. For details, see page EG-122.
"
System Diagram
A
*
1
: Only for models with cruise control system (conventional or dynamic radar type)
*
2
: Only for models with cruise control system (dynamic radar type)
Control
1) General
The ETCS-i consists of the following six functions:
D Normal Throttle Control (Non-linear Control)
D ISC (Idle Speed Control)
D TRC (Traction Control)
D VSC (Vehicle Stability Control)
D Cruise Control*
1
D Dynamic Radar type Cruise Control*
2
*
1
: Only for models with cruise control system (conventional or dynamic radar type)
*
2
: Only for models with cruise control system (dynamic radar type)
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