On-Vehicle Inspection [12/2012 - ]: Procedure

INSPECT ENGINE COOLANT
Refer to ON-VEHICLE INSPECTION [12/2012 - ]
INSPECT ENGINE OIL
Refer to ON-VEHICLE INSPECTION [12/2012 - ]
INSPECT BATTERY
Refer to ON-VEHICLE INSPECTION [12/2012 - 11/2013] , or refer to ON-VEHICLE INSPECTION [11/2013 - 10/2015] , or refer to ON-VEHICLE INSPECTION [10/2015 - ]
INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
1. Remove the air cleaner cap.
2. Remove the air cleaner filter element sub-assembly.
3. Visually check that the air cleaner filter is not excessively damaged or oily.
  If necessary, replace the air cleaner filter element sub-assembly.
INSPECT SPARK PLUG
Refer to ON-VEHICLE INSPECTION [12/2012 - ]
INSPECT FAN AND GENERATOR V BELT
Refer to ON-VEHICLE INSPECTION [12/2012 - ]
INSPECT VALVE LASH ADJUSTER ASSEMBLY NOISE
1. 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.
  
  Refer to PROCEDURE - Step 2

INSPECT IGNITION TIMING

Warm up and stop the engine.

When using the Techstream:

Connect the Techstream to the DLC3.
Start the engine and idle it.
Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / IGN Advance.

Standard ignition timing

5 to 15° BTDC @ idle

Powertrain > Engine and ECT > Data List

Tester Display
IGN Advance

HINT:

Refer to the Techstream operator's Service Information for further details.

If the ignition timing is not as specified, check the valve timing.

When not using the Techstream:

Connect the tester probe of a timing light to the wire of the ignition coil connector for the No. 1 cylinder.
NOTE:
Use a timing light that detects primary signals.

Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of DLC3

SST: 09843-18040

NOTE:

Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
When checking the ignition timing, the transaxle should be in neutral.

Using a timing light, check the ignition timing.
Standard ignition timing

8 to 12° BTDC @ idle
Remove SST from the DLC3.
Check the ignition timing.
Standard ignition timing

5 to 15° BTDC @ idle

If the ignition timing is not as specified, check the valve timing.
Check that the ignition timing advances immediately when the engine speed is increased.
Disconnect the timing light from the engine.

INSPECT ENGINE IDLE SPEED

Warm up and stop the engine.

When using the Techstream:

Connect the Techstream to the DLC3.
HINT:

Switch off all accessories and the A/C before connecting the Techstream.
Race the engine at 2500 RPM for approximately 90 seconds.
Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Engine Speed.

Powertrain > Engine and ECT > Data List

Tester Display
Engine Speed

Standard idle speed

720 to 820 RPM

NOTE:

When checking the idle speed, the transaxle should be in neutral.

HINT:

Refer to the Techstream operator's Service Information for further details.

If the idle speed is not as specified, check the air intake system.

Disconnect the Techstream from the DLC3.

When not using the Techstream:

Using SST, connect a tachometer probe to terminal 9 (TAC) of the DLC3.

*a	Front view of DLC3

SST: 09843-18030

NOTE:

Confirm the terminal number before connecting the probe. Connecting the wrong terminals can damage the engine.

Race the engine at 2500 RPM for approximately 90 seconds.
Check the idle speed.
Standard idle speed (transaxle in neutral)

720 to 820 RPM

If the speed is not as specified, check the air intake system.
Disconnect the tachometer probe from the DLC3.

INSPECT COMPRESSION
1. Warm up and stop the engine.
2. Check for DTCs.
  Refer to DTC CHECK / CLEAR [12/2012 - ]
3. Remove the 4 spark plugs.
  Refer to REMOVAL [12/2012 - ]
4. Disconnect the 4 fuel injector connectors.
5. Insert a compression gauge into the spark plug hole.
6. Fully open the throttle.
7. While cranking the engine, measure the compression pressure.
  Standard compression pressure
  
  1450 kPa (14.8 kgf/cm² , 210 psi) or higher
  
  Minimum pressure
  
  980 kPa (10.0 kgf/cm² , 142 psi)
  
  Difference between each cylinder
  
  200 kPa (2.0 kgf/cm² , 29 psi) or less
  
  HINT:
  
  Always use a fully charged battery to obtain an engine speed of 250 RPM or more.
8. If the cylinder compression is low in one or more cylinders, pour a small amount of engine oil into the cylinder with low compression through its spark plug hole. Then inspect the cylinder compression pressure again.
  HINT:
  - If adding oil helps boost the compression, it is likely that the piston rings and/or cylinder bore is worn or damaged.
  - If the pressure stays low, a valve may be stuck or seated improperly, or there may be leakage from the gasket.
9. Connect the 4 fuel injector connectors.
10. Install the 4 spark plugs.
  Refer to INSTALLATION [12/2012 - ]
11. Clear the DTCs.
  Refer to DTC CHECK / CLEAR [12/2012 - ]

INSPECT CO/HC

HINT:

This check determines 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 (1.31 ft.) into the tailpipe during idling.

Immediately check the CO/HC concentration at idle and at 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 order given below.

Check the air fuel ratio sensor operation.
Refer to INSPECTION [12/2012 - ]
Check the heated oxygen sensor operation.
Refer to INSPECTION [12/2012 - ]

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

CO	HC	Symptom	Causes
Normal	High	Rough idle	1. Faulty ignition Incorrect timing Plugs are contaminated or shorted, or gaps are defective 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 Brake booster line 2. Lean mixture causing misfire
High	High	Rough idle (Black smoke from exhaust)	1. Restricted air filter 2. Faulty SFI system Faulty pressure Defective engine coolant temperature sensor Faulty ECM Faulty injector Faulty throttle position sensor Faulty mass air flow meter sensor