Toyota RAV4 Service Manual: Engine
On-vehicle inspection
- Inspect engine coolant
- Inspect engine oil
- Inspect battery
- Inspect air cleaner filter element subassembly
- Remove the air cleaner cap.
- Remove the air filter element.
- Visually check that the air filter is not excessively
damaged or oily.
If necessary, replace the air filter.
- Inspect spark plug
- Inspect fan and generator v belt
Hint:
You do not need to check the belt deflection because the
auto tensioner has been adopted.
- Inspect ignition timing
Notice:
- Turn all the electrical systems and the a/c off.
- Inspect the ignition timing with the cooling fan
off.
- When checking the ignition timing, shift the
transmission to the neutral position.
- Warm up and stop the engine.
- When using intelligent tester:
- Connect the intelligent tester to the dlc3.
- Allow the engine to idle.
- Select the following menu items:
diagnosis / enhanced obd ii / data list
/ primary / ign advance.
- Read ign advance to check the ignition
timing.
Standard ignition timing: 5 to 15° btdc @ idle
- check that the ignition timing advances
immediately when the engine speed is
increased.
- Turn the ignition switch off.
- Disconnect the intelligent tester from the dlc3.
- When not using intelligent tester:
- Remove the no. 1 Engine cover (see page em-
22).
- Open the ignition cover located to the right of
the no. 4 Ignition coil.
- Pull out the wire harness from the ig cover.
- Connect a timing light to the wire harness.
Notice:
Use a timing light that detects the first
signal.
- Using sst, connect terminals 13 (tc) and 4
(cg) of the dlc3.
Sst 09843-18040
- Allow the engine to idle and check the ignition
timing.
Standard ignition timing:
8 to 12° btdc @ idle
Hint:
Run the engine at 1,000 to 1,300 rpm for 5
seconds, then check that the engine speed
returns to the idling speed.
- Remove sst from the dlc3.
- Allow the engine to idle and check the ignition
timing.
Standard ignition timing:
5 to 15° btdc
- Check that the ignition timing advances
immediately when the engine speed is
increased.
- Turn the ignition switch off.
- Remove the timing light.
- Close the ig cover.
- Install the no. 1 Engine cover (see page em-
43).
- Inspect engine idle speed
- When using intelligent tester:
- Turn off all the accessories and air
conditioning.
- Move the shift lever to p or neutral.
- Connect the intelligent tester to the dlc3.
- Warm up the engine.
- Select the tester menus:
diagnosis / enhanced obd ii / data list
/ primary / engine spd.
- Read engine speed to check the idle speed
while the radiator-cooling fan is not rotating.
Standard idle speed:
600 to 700 rpm
- Turn the ignition switch off.
- Disconnect the tester from the dlc3.
- When not using intelligent tester:
- Turn off all the accessories and air
conditioning.
- Move the shift lever to p or neutral.
- Connect sst to 9 (tac) of the dlc3 terminal,
and then connect a tachometer to sst.
Sst 09843-18030
- Warm up the engine.
- Check the idle speed while the radiator-cooling
fan is not rotating.
Standard idle speed:
600 to 700 rpm
- Turn the ignition switch off.
- Remove the tachometer and disconnect sst
from the dlc3.
- Inspect compression
- Warm up and stop the engine.
- Remove the no. 1 Engine under cover.
- Remove the 4 ignition coils (see page ig-9).
- Remove the 4 spark plugs.
- Disconnect the 4 fuel injector connectors.
- Set sst and a compression gauge. Sst 09992-00500
- Insert the compression gauge into the spark plug
hole.
- While cranking the engine, measure the
compression pressure.
Standard compression pressure:
1,300 kpa (13.8 Kgf/cm2, 196 psi)
Minimum pressure:
1,000 kpa (10 kgf/cm2, 142 psi)
Standard difference between each cylinder:
100 kpa (1.0 Kgf/cm2, 14 psi)
Notice:
- Always use a fully charged battery to obtain
an engine speed of 250 rpm or more.
- Check the other cylinders' compression
pressures in the same way.
- This measurement must be done as quickly
as possible.
If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
spark plug hole and inspect again.
Hint:
- If adding oil increases the compression, the
piston rings and/or cylinder bore may be worn or
damaged.
- If pressure stays low, a valve may be stuck or
seated improperly, or there may be leakage in
the gasket.
- Connect the 4 fuel injector connectors.
- Install the 4 spark plugs.
Torque: 25 n*m (255 kgf*cm, 18 ft.*Lbf)
- Install the 4 ignition coils (see page ig-9).
- Install the no. 1 Engine under cover.
- Inspect co/hc
Hint:
The ecm properly controls the co/hc concentration in
the emission gas.
- Start and warm up the engine.
- Start and warm up the engine.
- Insert the co/hc meter testing probe at least 40 cm
(1.3 Ft.) Into the tailpipe while idling.
- Inspect the co/hc concentration while idling and/or
at 2,500 rpm.
If the co/hc concentration is not as specified,
perform troubleshooting.
Hint:
See the table below for possible causes, and then
inspect and repair the applicable causes if
necessary.
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 ...
Installing child restraints
Follow the child restraint system manufacturer’s instructions.
Firmly secure child restraints to the seats using the latch
anchors or a seat belt. Attach the top tether strap when installing
a child restraint.
The lap/shoulder belt can be used if your child restraint system
is not compati ...
Downhill assist control operation switch (test mode dtc)
Description
The downhill assist control switch is connected to the skid control ecu in
the abs and traction
actuator.
Dtc c1379/74 can be detected when the downhill assist control switch sends the
downhill assist control
switch signal or test mode ends. Dtc c1379/74 is output only in t ...