1Az-Fe Engine Mechanical. Engine On-Vehicle Inspection

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

1Az-Fe Engine Mechanical. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

INSPECT ENGINE COOLANT
INSPECT ENGINE OIL
INSPECT BATTERY
INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
INSPECT SPARK PLUG
INSPECT FAN AND GENERATOR V BELT
INSPECT IGNITION TIMING
INSPECT ENGINE IDLE SPEED
INSPECT COMPRESSION
INSPECT CO/HC

Engine -- On-Vehicle Inspection

HINT:

The type of ignition switch on this model differs according to the specifications of the vehicle. For the expressions used in this section, refer to the "EXPRESSIONS OF IGNITION SWITCH" precaution (RAV4_ACA30 RM00000215G00HX.html).

1. INSPECT ENGINE COOLANT

2. INSPECT ENGINE OIL

3. INSPECT BATTERY

4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

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 cleaner filter element sub-assembly.

5. INSPECT SPARK PLUG

6. INSPECT FAN AND GENERATOR V BELT

HINT:

You do not need to check the belt deflection because the auto tensioner has been adopted.

7. 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.

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.1Az-Fe Engine Mechanical.Engine.Engine On-Vehicle Inspection

When using intelligent tester:
1. Connect the intelligent tester to the DLC3.
2. Allow the engine to idle.
3. Select the following menu items:
  Powertrain / Engine and ECT / Data List / IGN Advance.
4. Read IGN Advance to check the ignition timing.
  Standard ignition timing:
  5 to 15° BTDC @ idle
5. Check that the ignition timing advances immediately when the engine speed is increased.
6. Turn the ignition switch off.
7. Disconnect the intelligent tester from the DLC3.

When not using intelligent tester:
1. Remove the No. 1 engine cover (RAV4_ACA30 RM000001R3L00BX_01_0005.html).
2. Open the ignition cover located to the right of the No. 4 ignition coil.
3. Pull out the wire harness from the IG cover.
4. Connect a timing light to the wire harness.
  NOTICE:
  Use a timing light that detects the first signal.
5. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
  SST
  09843-18040
6. 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.
7. Remove SST from the DLC3.
8. Allow the engine to idle and check the ignition timing.
  Standard ignition timing:
  5 to 15° BTBC
9. Check that the ignition timing advances immediately when the engine speed is increased.
10. Turn the ignition switch off.
11. Remove the timing light.
12. Close the IG cover.
13. Install the No. 1 engine cover (RAV4_ACA30 RM000001AA900FX_01_0026.html).

8. INSPECT ENGINE IDLE SPEED

When using intelligent tester:
1. Turn OFF all the accessories and air conditioning.
2. Move the shift lever to P or neutral.
3. Connect the intelligent tester to the DLC3.
4. Warm up the engine.
5. Select the tester menus:
  Powertrain / Engine and ECT / Data List / Engine SPD
6. Read Engine SPD to check the idle speed while the radiator-cooling fan is not rotating.
  Standard idle speed:
  Item
  Specified Condition
  A/T vehicle
  610 to 710 rpm
  M/T vehicle
  650 to 750 rpm
7. Turn the ignition switch off.
8. Disconnect the tester from the DLC3.

When not using intelligent tester:
1. Turn OFF all the accessories and air conditioning.
2. Move the shift lever to P or neutral.
3. Connect SST to 9 (TAC) of the DLC3 terminal, and then connect a tachometer to SST.
  SST
  09843-18030
4. Warm up the engine.
5. Check the idle speed while the radiator-cooling fan is not rotating.
  Standard idle speed:
  Item
  Specified Condition
  A/T vehicle
  610 to 710 rpm
  M/T vehicle
  650 to 750 rpm
6. Turn the ignition switch off.
7. Remove the tachometer and disconnect SST from the DLC3.

9. INSPECT COMPRESSION

Warm up and stop the engine.

Remove the No. 1 engine under cover.

Remove the 4 ignition coils (RAV4_ACA30 RM000001QVM017X_01_0003.html).

Remove the 4 spark plugs.

Disconnect the 4 fuel injector connectors.

Insert a compression gauge into the spark plug hole.

While cranking the engine, measure the compression pressure.
Standard compression pressure:
1,300 kPa (13.3 kgf/cm², 189 psi)
Minimum pressure:
1,000 kPa (10.0 kgf/cm², 145 psi)
Standard difference between each cylinder:
100 kPa (1.0 kgf/cm², 15 psi)
NOTICE:
1. Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
2. Check the other cylinders' compression pressures in the same way.
3. 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:
1. If adding oil increases the compression, the piston rings and/or cylinder bore may be worn or damaged.
2. 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.

Install the 4 ignition coils (RAV4_ACA30 RM000001QVK018X_01_0001.html).

Install the No. 1 engine under cover.

10. INSPECT CO/HC

HINT:

The ECM properly controls the CO/HC concentration in the emission gas.

Start and warm up the engine.

Run the engine at 2,500 rpm for approximately 180 seconds.

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.

CO	HC	Problems	Causes
Normal	High	Rough idle	1. Faulty ignition: - Incorrect timing - Plugs are contaminated, shorted, or gaps are defective 2. Incorrect valve clearance 3. Leaks in intake and exhaust valve 4. Leaks in cylinders
Low	High	Rough idle (Fluctuating HC reading)	1. Vacuum leakage: - Ventilation hoses - Intake manifold - Throttle body - Brake booster line 2. Lean mixture causing misfire
High	High	Rough idle (Black smoke from exhaust)	1. Restricted air filter 2. Plugged PCV valve 3. Faulty SFI system: - Faulty pressure regulator - Faulty engine coolant temperature sensor - Faulty mass air flow meter - Faulty ECM - Faulty injectors - Faulty throttle body

Item	Specified Condition
A/T vehicle	610 to 710 rpm
M/T vehicle	650 to 750 rpm