Engine
4GR-FSE ENGINE MECHANICAL: ENGINE: ON-VEHICLE INSPECTION
1. INSPECT ENGINE COOLANT
(a) Inspect the engine coolant Testing and Inspection.
2. INSPECT ENGINE OIL
(a) Inspect the engine oil Testing and Inspection.
3. INSPECT BATTERY
(a) Inspect the battery Component Tests and General Diagnostics.
4. INSPECT SPARK PLUG
(a) Inspect the spark plug Testing and Inspection.
5. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
(a) Remove the air cleaner filter element sub-assembly.
(b) Visually check that there is no dirt, blockage, and/or damage to the air cleaner filter element.
HINT
* If there is any dirt or a blockage in the air cleaner filter element, clean it with compressed air.
* If any dirt or a blockage remains even after cleaning the air cleaner filter element with compressed air, replace it.
6. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY
(a) Check that nothing gets caught in the tensioner by turning it clockwise and counterclockwise.
If a malfunction exists, replace the tensioner.
7. INSPECT VALVE LASH ADJUSTER NOISE
(a) 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 above inspection again.
If any defects or problems are found during the above inspection, perform a lash adjuster inspection Engine Unit.
8. INSPECT IGNITION TIMING
(a) Warm up the engine and stop the engine.
NOTICE:
A warmed up engine should have an engine coolant temperature of over 80°C (176°F), have an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.
(b) When using the Techstream:
(1) Connect the Techstream to the DLC3.
(2) Start the engine and idle it.
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine / Data List / IGN Advance.
Standard ignition timing:
7 to 17° BTDC at idle
NOTICE:
* When checking the ignition timing, the transaxle should be in neutral or park.
* Switch off all accessories and A/C before connecting the Techstream.
HINT
Refer to the Techstream 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
NOTICE:
When checking the ignition timing, the transmission should be in neutral or park.
HINT
Refer to the Techstream operator's manual for further details.
(c) When not using the Techstream:
(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.
NOTICE:
Use a timing light which can detect the primary current.
(3) Using SST, connect terminals TC and CG of the DLC3.
SST : 09843-18040
NOTICE:
* 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 the SST from the DLC3.
(6) Check the ignition timing.
Standard ignition timing:
7 to 17° BTDC at idle
NOTICE:
* When checking the ignition timing, the transaxle should be in neutral or park.
* Switch off all accessories and A/C before connecting the Techstream.
(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.
9. INSPECT ENGINE IDLE SPEED
(a) 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.
(b) When using the Techstream:
(1) Connect the Techstream to the DLC3.
NOTICE:
Switch off all accessories and A/C before connecting the Techstream.
(2) Race the engine speed at 2500 rpm for approx. 90 seconds.
(3) Turn the Techstream on.
(4) Enter the following menus: powertrain / Engine / Data list / Engine Speed.
Standard idle speed:
650 to 750 rpm
NOTICE:
When checking the idle speed, the transmission should be in neutral.
HINT
Refer to the Techstream operator's manual for further details.
If the idle speed is not as specified, check the air intake system.
(5) Disconnect the Techstream from the DLC3.
(c) When not using the Techstream:
(1) Using SST, connect the tachometer probe to terminal 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 speed at 2500 rpm for approx. 90 seconds.
(3) Check the idle speed.
Standard idle speed (Transmission in neutral):
650 to 750 rpm
NOTICE:
When checking the idle speed, the transmission should be in neutral.
If the speed is not as specified, check the air intake system.
(4) Disconnect the tachometer from the DLC3.
10. INSPECT COMPRESSION
(a) 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.
(b) Remove the 6 spark plugs Removal.
(c) Disconnect the 2 injector driver connectors shown in the illustration.
(d) Insert a compression gauge into the spark plug hole.
(e) While cranking the engine, measure the compression pressure.
HINT
Always use a fully charged battery to obtain engine speed of 250 rpm or more.
NOTICE:
The measurement must be done as quickly as possible.
Standard compression pressure:
1.4 MPa (14 kgf/cm2, 203 psi) or more
Minimum pressure:
0.98 MPa (10.0 kgf/cm2, 142 psi)
(f) Perform the inspection above for each cylinder.
Difference between each cylinder:
0.1 MPa (1.0 kgf/cm2, 15 psi) or less
(g) 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
* If adding oil helps boost the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
* If pressure stays low, a valve may be stuck or seated improperly, or there may be leakage in the gasket.
(h) Connect the 2 injector driver connectors as shown in the illustration.
(i) Install the 6 spark plugs Installation.
11. INSPECT CO/HC
HINT
This check is for determining whether or not the idle CO / HC complies with regulations.
(a) Start the engine.
(b) Keep the engine speed at 2500 rpm for approx. 180 seconds.
(c) Insert the CO / HC meter testing probe at least 40 cm (1.3 ft.) into the tailpipe during idling.
(d) Immediately check CO / HC concentration at idle and/or 2500 rpm.
HINT
* When performing the 2 mode (2,500 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.
(1) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
(2) See the table below for possible causes, then inspect and correct the applicable causes if necessary.
