Engine On-Vehicle Inspection

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

2Gr-Fe Engine Mechanical. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

INSPECT VALVE LASH ADJUSTER NOISE
INSPECT IGNITION TIMING
INSPECT ENGINE IDLE SPEED
INSPECT COMPRESSION
INSPECT CO/HC

Engine -- On-Vehicle Inspection

1. INSPECT VALVE LASH ADJUSTER NOISE

Rev up the engine several times. Check that the engine does not emit unusual noises.
If unusual noises occur, warm up the engine and idle it for over 30 minutes. Then perform the inspection above again.
If any defects or problems are found during the inspection above, perform a lash adjuster inspection.

2. INSPECT IGNITION TIMING

Warm up and stop the engine.
NOTICE:
A warmed up engine should have an engine coolant temperature of over 80°C (176°F) and an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.

When using the intelligent tester:
1. Connect the intelligent tester to the DLC3.
2. Start the engine and idle it.
3. Turn the intelligent tester main switch on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / IGN Advance.
  Standard ignition timing:
  8 to 12° BTDC at idle
  HINT:
  Refer to the intelligent tester operator's manual for further details.

When not using the intelligent tester:
1. Remove the V-bank cover (RAV4_ACA30 RM0000019Y9015X_01_0090.html).
2. Connect the tester terminal of a timing light to the red lead wire as shown in the illustration.
  HINT:
  Use a timing light that detects primary signals.
3. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
  SST
  09843-18040
  NOTICE:
  1. Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
  2. When checking the ignition timing, the transmission should be in the neutral position.
4. Using a timing light, check the ignition timing.
  Standard ignition timing:
  8 to 12° BTDC at idle
  NOTICE:
  When checking the ignition timing, the transmission should be in the neutral position.
  HINT:
  Run the engine at 1000 to 1300 rpm for 5 seconds, and then check that the engine rpm returns to idle speed.
5. Remove SST from the DLC3.
6. Check the ignition timing.
  Standard ignition timing:
  5 to 15° BTDC at idle
7. Check that the ignition timing advances immediately when the engine speed is increased.
8. Disconnect the timing light from the engine.
9. Install the V-bank cover (RAV4_ACA30 RM0000019Y7015X_01_0114.html).

3. INSPECT ENGINE IDLE SPEED

Warm up and stop the engine.
NOTICE:
A warmed up engine should have an engine coolant temperature of over 80°C (176°F) and an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.

When using the intelligent tester:
1. Connect the intelligent tester to the DLC3.
  NOTICE:
  Switch off all accessories and A/C before connecting the intelligent tester.
2. Race the engine at 2500 rpm for approximately 90 seconds.
3. Turn the intelligent tester main switch on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
  Standard idle speed:
  600 to 700 rpm
  NOTICE:
  When checking the idle speed, the transmission should be in the neutral position.
  HINT:
  Refer to the intelligent tester operator's manual for further details.
  If the idle speed is not as specified, check the air intake system.
5. Disconnect the intelligent tester from the DLC3.

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Gr-Fe Engine Mechanical.Engine.Engine On-Vehicle Inspection

When not using the intelligent tester:
1. Using SST, connect the tachometer probe to terminal 9 (TAC) of the DLC3.
  SST
  09843-18040
  NOTICE:
  Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
2. Race the engine at 2500 rpm for approximately 90 seconds.
3. Check the idle speed.
  Standard idle speed:
  600 to 700 rpm (Transmission in neutral position)
  If the speed is not as specified, check the air intake system.
4. Disconnect the tachometer probe from the DLC3.

4. INSPECT COMPRESSION

Warm up and stop the engine.
NOTICE:
A warmed up engine should have an engine coolant temperature of over 80°C (176°F) and an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.

Disconnect the injector connectors.

Remove the intake air surge tank (RAV4_ACA30 RM0000019Y9015X_01_0178.html).

Remove the 6 ignition coils (RAV4_ACA30 RM0000019Y9015X_01_0144.html).

Remove the 6 spark plugs.

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

Inspect the cylinder compression pressure.
1. Insert a compression gauge into the spark plug hole.
2. While cranking the engine, measure the compression pressure.
  HINT:
  Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
  NOTICE:
  The measurement must be done as quickly as possible.
  Compression pressure:
  1400 kPa (14 kgf/cm², 199 psi) or more
  Minimum pressure:
  980 kPa (10.0 kgf/cm², 142 psi)
  Difference between each cylinder:
  100 kPa (1.0 kgf/cm², 15 psi) or less
3. Perform the inspection above for each cylinder.
4. If the cylinder compression in one or more cylinders is low, pour a small amount of engine oil into the cylinder through the spark plug hole. Then perform the first 3 steps under "Inspect the cylinder compression pressure" for the cylinders with low compression.
  HINT:
  1. If adding oil helps the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
  2. If pressure stays low, a valve may be stuck or seated improperly, or there may be leakage in the gasket.

Install the 6 spark plugs.

Install the 6 ignition coils (RAV4_ACA30 RM0000019Y7015X_01_0201.html).

Install the intake air surge tank (RAV4_ACA30 RM0000019Y7015X_01_0201.html).

Connect the injector connectors.

5. INSPECT CO/HC

HINT:

This check is for determining whether or not the idle CO/HC complies with regulations.

Start the engine.

Keep the engine speed at 2500 rpm for approximately 180 seconds.

Insert a CO/HC meter testing probe at least 40 cm (1.3 ft.) into the tailpipe during idling.

Immediately check the CO/HC concentration at idle and/or 2500 rpm.

HINT:

When performing the 2 mode (2500 rpm and idle) test, follow the measurement order prescribed by the applicable local regulations.
If the CO/HC concentration does not comply with regulations, troubleshoot in the following order.

Check the air fuel ratio sensor and heated oxygen sensor operation.

See the table below for the possible cause, then inspect and correct the applicable causes if necessary.

CO	HC	Symptom	Causes
Normal	High	Rough idle	1. Faulty ignitions Incorrect timing Fouled, shorted or improperly gapped plugs 2. Leaky intake and exhaust valves 3. Leaky cylinder
Low	High	Rough idle (Fluctuating HC reading)	1. Vacuum leaks PCV hose Intake manifold Throttle body 2. Lean mixture causing misfire
High	High	Rough idle (Black smoke from exhaust)	1. Restricted air filter 2. Faulty fuel SFI system Abnormal pressure Defective ECT sensor Faulty ECM Faulty injector Faulty throttle position sensor Faulty MAF sensor