ENGINE ON-VEHICLE INSPECTION

INSPECT ENGINE COOLANT

1. Click here

INSPECT ENGINE OIL

1. Click here

INSPECT BATTERY

1. Click here

INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

1. Remove the air cleaner cap sub-assembly (Click here).

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.

   Tip:
   

   • If there is any dirt or a blockage in the air cleaner filter element sub-assembly, clean it with compressed air.

   • If any dirt or a blockage remains even after cleaning the air cleaner filter element sub-assembly with compressed air, replace it.

4. Install the air cleaner filter element sub-assembly.

5. Install the air cleaner cap sub-assembly (Click here).

INSPECT V-RIBBED BELT

1. Click here

INSPECT V-RIBBED BELT TENSIONER ASSEMBLY

1. Remove the V-ribbed belt (Click here).

2. Check that nothing is caught in the tensioner by turning it clockwise and counterclockwise. If a malfunction exists, replace the tensioner.

3. Install the V-ribbed belt (Click here).

INSPECT SPARK PLUG

1. Click here

INSPECT VALVE LASH ADJUSTER 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 preceding inspection.

   Tip:

   If any defects or problems are found during the preceding inspection, perform lash adjuster inspection (Click here).

INSPECT IGNITION TIMING

1. Warm up and stop the engine.

   Tip:

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

2. When using the intelligent tester:

   Check the ignition timing.

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Start the engine and run it at idle.

   3. Turn the intelligent tester main switch on.

   4. Enter the following menus: Powertrain / Engine / Data List / IGN Advance.

      Standard ignition timing
      7 to 24° BTDC at idle

      Note:
      

      • Check the ignition timing with the cooling fans off.

      • Turn off all electrical systems and the A/C.

      • When checking the ignition timing, the transaxle should be in neutral or park.

      Tip:

      Refer to the intelligent tester operator's manual for further details.

   5. Check that the ignition timing advances immediately when the engine speed is increased.

   6. Enter the following menus: Powertrain / Engine / Active Test / Connect the TC and TE1.

   7. Monitor IGN Advance.

   8. Perform the Active Test.

      Standard ignition timing
      8 to 12° BTDC at idle

      Note:

      When checking the ignition timing, the transaxle should be in neutral or park.

      Tip:

      Refer to the intelligent tester operator's manual for further details.

3. When not using the intelligent tester:

   
   
   1. 

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

      09843-18040

      Note:
      

      • Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.

      • Check the ignition timing with the cooling fans off.

      • Turn off all the electrical systems and the A/C.

      • When checking the ignition timing, the transaxle should be in neutral or park.

   2. Remove the V-bank cover sub-assembly (Click here).

   3. Connect the timing light tester probe to the ignition coil wire for No. 1 cylinder.

      Note:

      Use a timing light that detects primary signals.

   4. Check the ignition timing at idle.

      Standard ignition timing
      8 to 12° BTDC at idle

      Note:

      When checking the ignition timing, the transaxle should be in the neutral position.

      Tip:

      Run the engine at 1000 to 1300 rpm for 5 seconds, and then check that the engine rpm returns to idle speed.

   5. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.

   6. Check the ignition timing at idle.

      Standard ignition timing
      7 to 24° BTDC at idle

   7. Confirm that the ignition timing advances immediately when the engine rpm is increased.

   8. Remove the timing light from the engine.

   9. Install the V-bank cover sub-assembly (Click here).

INSPECT ENGINE IDLE SPEED

1. Warm up and stop the engine.

   Tip:

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

2. When using the intelligent tester:

   Check the idle speed.

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Start the engine and run it at idle.

   3. Turn the intelligent tester main switch on.

   4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.

   5. Read the value displayed on the tester.

      Idle speed
      600 to 700 rpm

      Note:
      

      • Check the idle speed with the cooling fans off.

      • Turn off all the electrical systems and the A/C.

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

      Tip:

      Refer to the intelligent tester operator's manual for further details.

3. When not using the intelligent tester:

   
   
   1. 

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

      09843-18030

   2. Check the idle speed.

      Standard idle speed
      600 to 700 rpm

      Note:
      

      • Check the idle speed with the cooling fans off.

      • Turn off all the electrical systems and the A/C.

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

      Tip:

      If the speed is not as specified, check the air intake system (Click here).

INSPECT COMPRESSION

1. Warm up and stop the engine.

   Tip:

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

2. Remove the V-bank cover sub-assembly (Click here).

3. Remove the intake air surge tank assembly (Click here).

4. Disconnect the injector connectors.

5. Remove the 6 ignition coils (Click here).

6. Remove the 6 spark plugs (Click here).

7. 

   Check the cylinder compression pressure.

   
   

   1. Insert a compression gauge into the spark plug hole.

   2. While cranking the engine, measure the compression pressure.

      Standard compression pressure
      1.3 MPa (13 kgf/cm2, 189 psi)

      Minimum pressure
      0.98 MPa (10 kgf/cm2, 142 psi)

      Difference between each cylinder
      0.1 MPa (1.0 kgf/cm2, 15 psi)

      Note:
      

      • Always use a fully charged battery to obtain an engine speed of 250 rpm or more.

      • Check the compression pressure of the other cylinders in the same way.

      • This measurement must be done as quickly as possible.

   3. If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole and inspect again.

      Tip:
      

      • 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.

8. Install the 6 spark plugs (Click here).

9. Install the 6 ignition coils (Click here).

10. Connect the injector connectors.

11. Install the intake air surge tank assembly (Click here).

12. Install the V-bank cover sub-assembly (Click here).

INSPECT CO/HC

1. Start the engine.

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

3. Insert the CO/HC meter testing probe at least 40 cm (1.31 ft.) into the tailpipe during idle.

4. Immediately check CO/HC concentration during idle and when running at 2500 rpm.

   Tip:

   When performing the 2 mode (with the engine idling/running at 2500 rpm) test, follow the measurement order determined by applicable local regulations.

   If the CO/HC concentration does not comply with the regulations, perform troubleshooting in the order given below.

   
   

   1. Check the DTCs (Click here).

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

      CO	HC	Problem	Cause
      Normal	High	Rough idle	Faulty ignitions: Incorrect valve timing Fouled, shorted or improperly gapped plugs Incorrect valve clearance (valve lash adjuster) Leaks in intake or exhaust valves Leaks in cylinders
      Low	High	Rough idle (Fluctuating HC reading)	Vacuum leaks: PCV hoses Intake manifold Throttle body assembly Brake booster line Lean mixture causing misfire
      High	High	Rough idle (Black smoke from exhaust)	Restricted air cleaner filter element sub-assembly Plugged PCV valve Faulty SFI system: Faulty fuel pressure regulator Defective engine coolant temperature sensor Defective mass air flow meter Faulty ECM Faulty injector assemblies Faulty throttle position sensor (built in throttle body assembly)