2006 TOYOTA RAV4 Service Repair Manual

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Page 49 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
01NEG09Y
01NEG10Y
Air
Conditioning
ECU
Engine Coolant
Temperature SensorFANL
ECM
FA N HCooling Fan
Relay No.3
Cooling Fan
Motor No.2
Cooling Fan
Relay No.1
Cooling Fan
Motor

Page 50 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
00REG18Y
Front Airbag
Sensor
(RH and LH)
Curtain Shield
Airbag Sensor*
(RH and LH)Airbag
Sensor
Side Airbag
Sensor*
(RH or LH)ECMCircuit
Opening
Relay
Fuel
Pump
Motor
: CANEG

Page 51 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
Service Tip
The canister pump module performs the EVAP leak check. This check is done approximately five
hours after the engine is turned off. So you may hear sound coming fr

ENGINE - 2AZ-FE ENGINE
Service Tip
The canister pump module performs the EVAP leak check. This check is done approximately five
hours after the engine is turned off. So you may hear sound coming from underneath the luggage
compartment for several minutes. It does not indicate a malfunction.
The pinpoint pressure test procedure is carried out by pressurizing the fresh air line that runs from
the pump module to the air filler neck. For details, refer to the 2006 RAV4 Repair Manual (Pub.
No. RM01M1U).
EG-54
10. EVAP (evaporative Emission) Control System
General
The EVAP (evaporative emission) control system prevents the vapor gas that is created in the fuel tank from
being released directly into the atmosphere.
The canister stores the vapor gas that has been created in the fuel tank.
The ECM controls the purge VSV in accordance with the driving conditions in order to direct the vapor
gas into the engine, where it is burned.
In this system, the ECM checks the evaporative emission leak and outputs DTC (Diagnostic Trouble
Code) in the event of a malfunction. An EVAP (evaporative emission) leak check consists of an
application of a vacuum pressure to the system and monitoring the changes in the system pressure in order
to detect a leakage.
This system consists of the purge VSV, canister, refueling valve, canister pump module, and ECM.
The ORVR (Onboard Refueling Vapor Recovery) function is provided in the refueling valve.
The canister pressure sensor has been included to the canister pump module.
The canister filter has been provided on the fresh air line. This canister filter is maintenance-free.
The followings are the typical conditions for enabling an EVAP leak check:
Typical Enabling
Condition
Five hours have elapsed after the engine has been turned OFF*.
Altitude: Below 2400 m (8000 feet)
Battery voltage: 10.5 V or more
Ignition switch: OFF
Engine coolant temperature: 4.4 to 35C (40 to 95F)
Intake air temperature: 4.4 to 35C (40 to 95F)
*: If engine coolant temperature does not drop below 35C (95F), this time should be extended to 7hours.
Even after that, if the temperature is not less than 35
C (95F), the time should be extended to 9.5 hours.

Page 52 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
00REG22Y
To Intake Manifold
Purge VSV
Purge Air
Line
ECMFuel Tank
Canister Filter
Fresh Air LineRefueling Valve
Canister Pump Module
Ve n t
Va l v e
Leak Detection Pump
& Pum

Page 53 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
D13N07 285EG76
Chamber A
Fresh Air Line
Refueling
Valve (Open)
Chamber B
From Fuel
Ta n k
Internal PressureCanister
To F u e l
Ta n k
Positive Pressure
(Fuel Tank Pressure)

Page 54 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
279EG26
D13N17 279EG25
Fresh Air
Canister
Pressure SensorLeak Detection Pump
Pump Motor
Vane PumpCanister
Pressure SensorVe n t Va l v e
Fresh Air
Canister
Canister Pump Mo

Page 55 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
00REG23Y
To Intake Manifold
Atmosphere
Purge VSV
(Open)
ECM
00REG24Y
CloseOpen EG-58
System Operation
1) Purge Flow Control
When the engine has satisfied the predetermined co

Page 56 of 2000

TOYOTA RAV4 2006 Service Repair Manual ENGINE - 2AZ-FE ENGINE
275TU47
Purge
VSV
Ve n t
Va l v e
Pump Motor
System
PressureON (Open)
OFF (Close)
ON
OFF (Vent)
ON
OFF
Atmospheric Pressure
0.02 in. Leak Pressure
1) 2) 3) 4) 5) 6)EG-59
3) E

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