Toyota RAV4 Service Manual: Emission control system
Parts location
System diagram
On-vehicle inspection
- Check fuel cut rpm
- Increase the engine speed to at least 3,500 rpm.
- Use a sound scope to check for injector operating
noise.
- Check that the operating sounds stop momentarily
and then resume when the throttle lever is released.
Hint:
Measure with the a/c off.
Fuel return rpm:
1,400 rpm
- Check for leaks
- Visually check that the hoses, connections and
gaskets have no cracks, leaks or damage.
Notice:
- Detachment or other problems with the
engine oil dipstick, filler cap, pcv hose and
other components may cause the engine to
run improperly.
- Disconnection, looseness or cracks in the
parts of the air induction system between the
throttle body and cylinder head will allow air
suction and cause an engine failure or engine
malfunctions.
If the result is not as specified, replace parts as
necessary.
- Check line and connectors
- Visually check for loose connections, sharp bends
or damage.
- Check fuel tank assembly
- Visually check for deformation, cracks or fuel
leakage.
- Check fuel tank and vent line
- Disconnect the vent line tube from the canister.
- Connect a pressure gauge to the vent line tube.
- Apply 4 kpa (41 kgf/cm2, 30 mmhg) of pressure to
the vent line of the fuel tank.
Hint:
Perform this inspection with the fuel tank less than
90% full. When the fuel tank is full, the fuel cutoff
valve closes and pressure is released through the
1.5 Mm orifice. As a result, when the fuel tank cap is
removed, the pressure does not decrease smoothly.
- Check that the fuel tank pressure is maintained for
some time, and does not decrease immediately.
Hint:
If the pressure decreases immediately, one of the
following may be the cause:
- The fuel tank cap is not completely tightened.
- The fuel tank cap is damaged.
- Air is leaking from the vent line.
- The fuel tank is damaged.
- When the fuel tank cap is removed, check that
pressure is released smoothly.
Hint:
If the pressure does not drop, replace the fuel tank
assembly.
- Reconnect the vent line tube to the canister.
- Check air inlet line
- Disconnect the air inlet line hose from the charcoal
canister.
- Check that air flows freely into the air inlet line.
Hint:
If air does not flow freely into the air inlet line, repair
or replace it.
- Reconnect the air inlet line hose to the charcoal
canister.
Components
removal
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent ai ...
Other materials:
General maintenance (2006/01- )
General notes
Maintenance requirements vary depending on the
country.
Check the maintenance schedule in the owner's
manual supplement.
Following the maintenance schedule is mandatory.
Determine the appropriate time to service the vehicle
using either miles driven or time elapsed ...
Dtc check / clear
Notice:
When the diagnosis system is changed from normal
mode to check mode or vice versa, all dtcs and freeze
frame data recorded in normal mode are erased. Before
changing modes, always check and make a note of any
dtcs and freeze frame data.
Hint:
Dtcs which are stored in the ecm can be ...
Compressor solenoid circuit (2006/01- )
Description
In this circuit, the compressor receives a refrigerant compression demand
signal from the air conditioning
amplifier. Based on this signal, the compressor changes the degree of
refrigerant compression.
Hint:
*: Compressor and pulley for 2az-fe, compressor and magnetic clutc ...