On-Vehicle Inspection [10/2017 - 09/2020]: Procedure

Refer to ON-VEHICLE INSPECTION [10/2017 - ]

Refer to ON-VEHICLE INSPECTION [10/2017 - 10/2023]

Refer to ON-VEHICLE INSPECTION [10/2017 - ]

Refer to ON-VEHICLE INSPECTION [10/2017 - ]

1. Remove the air cleaner filter element sub-assembly.
2. Visually check that the air cleaner filter element sub-assembly is not damaged or excessively oily.

   HINT: 

   • If there is any dirt or clogs in the air cleaner filter element sub-assembly, clean it with compressed air.
   • If any dirt or clogs remain even after cleaning the air cleaner filter element sub-assembly with compressed air, replace it.
3. Install the air cleaner filter element sub-assembly.

1. Remove the V-ribbed belt.

   Refer to REMOVAL [10/2017 - ] 

2. Turn the V-ribbed belt tensioner assembly clockwise and counterclockwise and check that it turns smoothly and does not catch.

   HINT: 

   If the V-ribbed belt tensioner assembly does not turn smoothly or catches, replace the V-ribbed belt tensioner assembly.

3. Install the V-ribbed belt.

   Refer to INSTALLATION [10/2017 - ] 

1. Rev up the engine several times. Check that the engine does not emit unusual noises.
2. If unusual noises occur, warm up the engine and idle it for 30 minutes or more, then perform the inspection.

   HINT: 

   If any defects or problems are found during the inspection, perform valve lash adjuster assembly inspection.

   Refer to PROCEDURE - Step 2

1. Warm up and stop the engine.
2. When using the Techstream:
   1. Connect the Techstream to the DLC3.
   2. Start the engine and run it at idle.
   3. Turn the Techstream on.
   4. 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

      8 to 25° BTDC at idle

   5. Check that the ignition timing advances immediately when the engine speed is increased.
   6. 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

   7. Monitor Ignition Timing Cylinder #1 of the Data List.

      Standard Ignition Timing

      8 to 12° BTDC at idle

3. When not using the Techstream:
   1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a

      DLC3

      • SST: 09843-18040 
      NOTE:

      Confirm the terminal numbers before connecting them. Connecting the wrong terminals may damage electrical components.

   2. Remove the V-bank cover sub-assembly.

      See step  3

   3. Connect the clip of a timing light to the ignition coil wire for the No. 1 cylinder.
      NOTE:

      Use a timing light that detects primary signals.

   4. Start the engine and run it at idle.
   5. Check the ignition timing at idle.

      Standard Ignition Timing

      8 to 12° BTDC at idle

      HINT: 

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

   6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
   7. Check the ignition timing at idle.

      Standard Ignition Timing

      8 to 25° BTDC at idle

   8. Confirm that the ignition timing advances immediately when the engine speed is increased.
   9. Disconnect the clip of the timing light from the ignition coil wire for the No. 1 cylinder.
   10. Install the V-bank cover sub-assembly.

       Refer to PROCEDURE - Step 104

1. Warm up and stop the engine.
2. When using the Techstream:
   1. Connect the Techstream to the DLC3.
   2. Start the engine and run it at idle.
   3. Turn the Techstream on.
   4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.

      Powertrain > Engine > Data List 

      Tester Display
      Engine Speed

   5. Read the value displayed on the Techstream.

      Standard Idle Speed

      600 to 700 rpm

3. When not using the Techstream:
   1. Using SST, connect a tachometer probe to terminal 9 (TAC) of the DLC3.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a

      DLC3

      • SST: 09843-18030 
      NOTE:

      Be sure to connect the tachometer probe to the correct terminal. Connecting to the wrong terminal may result in damage to electrical components.

   2. Turn the engine switch ON (IG).
   3. Inspect the engine idle speed.

      Standard Idle Speed

      600 to 700 rpm

   4. Turn the engine switch off.
   5. Disconnect the tachometer probe from terminal 9 (TAC) of the DLC3.

1. Warm up and stop the engine.
2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - ]

3. Disconnect the 4 fuel injector connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

4. Remove the 6 spark plugs.

   Refer to REMOVAL [10/2017 - ]

5. Check the cylinder compression pressure.
   1. Insert a compression gauge into the spark plug hole.
   2. Fully open the throttle.
   3. While depressing the brake pedal, push the engine switch to crank the engine. Then check the compression pressure.

      Standard Compression Pressure

      1400 kPa (14.3 kgf/cm² , 203 psi)

      Minimum Compression Pressure

      980 kPa (10.0 kgf/cm² , 142 psi)

      Pressure Difference between each Cylinder

      100 kPa (1.0 kgf/cm² , 15 psi) or less

      NOTE:

      • Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
      • Inspect all cylinders in the same way.
      • Measure the compression pressure as quickly as possible.
   4. If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole then inspect the cylinder compression pressure again.

      HINT: 

      • 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.
6. Install the 6 spark plugs.

   Refer to INSTALLATION [10/2017 - ]

7. Connect the 4 fuel injector connectors.
8. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - ]

   NOTE:

   After the inspection, clear the DTCs, check for DTCs again and make sure the normal system code is output.

HINT: 

This check determines whether or not the idle CO/HC complies with regulations.

1. Start the engine.
2. Run the engine speed at 2500 rpm for approximately 180 seconds.
3. Insert a CO/HC meter testing probe at least 40 cm (1.31 ft.) into the tailpipe during idle.
4. Immediately check the CO/HC concentration at idle and then at an engine speed of 2500 rpm.

   HINT: 

   When performing a 2 mode test (with the engine idling/running at 2500 rpm), the measurement procedures are 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 for DTCs.

      Refer to DTC CHECK / CLEAR [10/2017 - ]

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

      CO	HC	Problem	Cause
      Normal	High	Rough idle	Faulty ignition: Incorrect valve timing Fouled, shorted or improperly gapped spark plugs Incorrect valve clearance (valve lash adjuster assembly) Leaks in intake or exhaust valves Leaks in cylinders
      Low	High	Rough idle (Fluctuating HC reading)	Vacuum leaks: PCV hoses Intake manifold Throttle with motor body assembly 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: Fuel pressure regulator assembly Engine coolant temperature sensor Mass air flow meter sub-assembly ECM Fuel injector assemblies Throttle position sensor (built in throttle with motor body assembly)