ENGINE ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

CAUTION:

To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the engine running or the power switch on (IG).

PROCEDURE

INSPECT ENGINE COOLANT (for Engine)

Click here
INSPECT ENGINE OIL

Click here
INSPECT AUXILIARY BATTERY

Click here
INSPECT SPARK PLUG

Click here
INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
1. Remove the air cleaner filter element sub-assembly.
2. Visually check that there is no dirt, blockage, and/or damage to the air cleaner filter element sub-assembly.
  Tech Tips
  - 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.
3. Install the air cleaner filter element sub-assembly.
INSPECT V-RIBBED BELT

Click here
INSPECT VALVE LASH ADJUSTER NOISE
1. Put the engine in inspection mode.
  
  Click here
2. 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 valve lash adjuster inspection.
INSPECT IGNITION TIMING
Note
- 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 transmission should be in park.
1. Put the engine in inspection mode.
  
  Click here
2. Warm up the engine and stop the engine.
  
  Note
  
  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 speed should be stabilized.
3. When using the GTS:
  1. Connect the GTS to the DLC3.
  2. Put the engine in inspection mode.
    
    Click here
  3. Enter the following menus: Powertrain / Engine / Data List / Ignition Timing Cylinder #1.
    
    Powertrain > Engine > Data List
    
    Tester Display
    
    Ignition Timing Cylinder #1
    
    Standard ignition timing
    
    7 to 24° BTDC at idle
  4. Check that the ignition timing advances immediately when the engine speed is increased.
  5. Enter the following menus: Powertrain / Engine / Active Test / Activate the TC Terminal / ON.
    
    Powertrain > Engine > Active Test
    
    Active Test Display
    
    Activate the TC Terminal
    
    Data List Display
    
    Ignition Timing Cylinder #1
  6. Monitor Ignition Timing Cylinder #1 of the Data List.
    
    Standard ignition timing
    
    8 to 12° BTDC at idle
4. When not using the GTS:
  1. Remove the V-bank cover sub-assembly.
  2. Connect the tester probe of a timing light to the wire of the ignition connector for No. 1 cylinder.
    
    Note
    
    Use a timing light which can detect the primary signal.
  3. *a Front view of DLC3
    
    Using SST, connect terminals 13 (TC) and 4 (CG) of the 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 transmission should be in neutral.
  4. Using a timing light, check the ignition timing.
    
    Standard ignition timing
    
    8 to 12° BTDC at idle
  5. Remove SST from the DLC3.
  6. Check the ignition timing.
    
    Standard ignition timing
    
    7 to 24° 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 sub-assembly.
INSPECT ENGINE IDLE SPEED
Note
- Check the idle speed with the cooling fans off.
- Turn off all the electrical systems and the A/C.
- When checking the ignition timing, the transmission should be in park.
1. Put the engine in inspection mode.
  
  Click here
2. Warm up and stop the engine.
  
  Note
  
  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 speed should be stabilized.
3. When using the GTS:
  1. Connect the GTS to the DLC3.
  2. Put the engine in inspection mode.
    
    Click here
  3. Enter the following menus: powertrain / Engine / Data list / Engine Speed.
    
    Powertrain > Engine > Data List
    
    Tester Display
    
    Engine Speed
  4. Read the value displayed on the GTS.
    
    Standard idle speed
    
    950 to 1050 rpm
  5. Disconnect the GTS from the DLC3.
4. When not using the GTS:
  1. *a Front view of DLC3
    
    Using SST, connect the tachometer probe to terminal 9 (TAC) of the DLC3.
    
    SST
    
    09843-18030
    
    Note
    
    Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
  2. Put the engine in inspection mode.
    
    Click here
  3. Check the idle speed.
    
    Standard idle speed
    
    950 to 1050 rpm
  4. Turn the power switch off.
  5. Disconnect the tachometer from the DLC3.
INSPECT COMPRESSION

Note

Keep the intake manifold and spark plug holes free of foreign matter when measuring the compression pressure.
1. Put the engine in inspection mode.
  
  Click here
2. Warm up and stop the engine.
  
  Note
  
  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 speed should be stabilized.
3. Connect the GTS to the DLC3.
4. Check for DTCs.
  - w/ Canister Pump Module:
    
    Click here
  - w/o Canister Pump Module:
    
    Click here
5. Remove intake air surge tank assembly.
  
  Click here
6. Remove the 6 ignition coils.
  
  Click here
7. Remove the 6 spark plugs.
  
  Click here
8. Insert a compression gauge into the spark plug hole.
9. Turn the power switch on (IG).
10. Turn the GTS on.
  
  Note
  
  Check the HV battery voltage in the Data List to ensure that the battery is fully charged.
11. Enter the following menus: Powertrain / Hybrid Control / Active Test / Compression Test / ON.
  
  Powertrain > Hybrid Control > Active Test
  
  Tester Display
  
  Compression Test
12. Depress and hold the brake pedal, and turn the power switch on (READY). Then check the compression pressure.
  
  Standard Compression Pressure
  
  1000 kPa (10.2 kgf/cm², 145 psi)
  
  Minimum Compression Pressure
  
  750 kPa (7.6 kgf/cm², 109 psi)
  
  Pressure Difference between Each Cylinder
  
  100 kPa (1.0 kgf/cm², 15 psi) or less
  Note
  - Inspect all cylinders in the same way.
  - Measure the compression pressure as quickly as possible.
  - Noise may be emitted from the hybrid vehicle transaxle assembly. However, this is not a malfunction.
13. If the cylinder compression pressure is low, pour a small amount of engine oil into the cylinder through the spark plug hole and inspect it again.
  Tech Tips
  - If adding oil increases the compression pressure, the piston rings and/or cylinder bore may be worn or damaged.
  - If the compression pressure stays low, a valve may be stuck or seated improperly, or there may be leaks in the cylinder head gasket.
14. Install the 6 spark plugs.
  
  Click here
15. Install the 6 ignition coils.
  
  Click here
16. Install the intake air surge tank assembly.
  
  Click here
17. Clear the DTCs.
  - w/ Canister Pump Module:
    
    Click here
  - w/o Canister Pump Module:
    
    Click here
  Note
  
  After performing the inspection, clear the DTCs and confirm that DTCs are not stored again or that the normal system code is output if using a check wire.

Tester Display
Ignition Timing Cylinder #1

Standard ignition timing
7 to 24° BTDC at idle

Active Test Display
Activate the TC Terminal

Data List Display
Ignition Timing Cylinder #1

Standard ignition timing
8 to 12° BTDC at idle

Standard ignition timing
8 to 12° BTDC at idle

Standard ignition timing
7 to 24° BTDC at idle

Tester Display
Engine Speed

Standard idle speed
950 to 1050 rpm

Standard idle speed
950 to 1050 rpm

Tester Display
Compression Test

Standard Compression Pressure
1000 kPa (10.2 kgf/cm², 145 psi)

Minimum Compression Pressure
750 kPa (7.6 kgf/cm², 109 psi)

Pressure Difference between Each Cylinder
100 kPa (1.0 kgf/cm², 15 psi) or less

INSPECT CO/HC

Tech Tips

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

Put the engine in inspection mode.

Click here
Keep the engine speed at 2500 rpm for approx. 180 seconds.
Insert the CO / HC meter testing probe at least 40 cm (1.31 ft.) into the tailpipe during idling.

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

Tech Tips

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 DTCs.
- w/ Canister Pump Module:
  
  Click here
- w/o Canister Pump Module:
  
  Click here

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

CO	HC	Symptom	Causes
Normal	High	Rough idle	Faulty ignitions Incorrect timing Fouled, shorted or improperly gapped plugs Incorrect valve clearance (valve lash adjuster assembly) Leaky intake and exhaust valves Leaky cylinder Faulty EGR
Low	High	Rough idle (Fluctuating HC reading)	Vacuum leaks PCV hose Intake manifold Throttle body with motor assembly Lean mixture causing misfire Faulty EGR
High	High	Rough idle (Black smoke from exhaust)	Restricted air filter Faulty fuel SFI system Faulty fuel pressure Defective engine coolant temperature sensor Faulty ECM Faulty fuel injector assembly Faulty throttle position sensor (built into throttle with motor body assembly) Faulty mass air flow meter Faulty EGR

Symptom

Causes

Normal

High

Rough idle

Faulty ignitions

Incorrect timing
Fouled, shorted or improperly gapped plugs

Incorrect valve clearance (valve lash adjuster assembly)
Leaky intake and exhaust valves
Leaky cylinder
Faulty EGR

Low

High

Rough idle

(Fluctuating HC reading)

Vacuum leaks

PCV hose
Intake manifold
Throttle body with motor assembly

Lean mixture causing misfire
Faulty EGR

High

Rough idle

(Black smoke from exhaust)

Restricted air filter
Faulty fuel SFI system

Faulty fuel pressure
Defective engine coolant temperature sensor
Faulty ECM
Faulty fuel injector assembly
Faulty throttle position sensor (built into throttle with motor body assembly)
Faulty mass air flow meter

Faulty EGR