Apply engine conditioner to the injector area shown in the illustration. Using a piece of cloth, clean carbon deposits from the injector and its grooves.

NOTICE:

Do not clean the tip of the injector.

Do not use a wire brush to clean the injector.

If an injector is dropped or the tips of the injectors are struck, replace it with a new one.

Apply engine oil to the injector contact surface of SST (guide). Then attach SST (guide) to the injector with the tapered inner portion facing the tip of the injector, as shown in the illustration.

SST
09260-39015(09268-03020)

Install a new injector seal to SST (holder).

SST
09260-39015(09268-03010)

NOTICE:

Be careful not to install the injector seal to SST (holder) at an angle. Doing so will stretch the seal and correcting this problem is very complicated.

Install SST (holder with injector seal) to the tip of the injector. Slide the seal downward into the injector groove (injector connector side) with your fingers, as shown in the illustration.

SST
09260-39015(09268-03010,09268-03020)

HINT:

Check that the seal covers the circumference of the injector groove as shown in the illustration.

Using SST (holder), gently press downward on the injector seal (injector connector side). Then slowly slide SST (guide) towards the injector tip to settle the seal into the injector groove.

SST
09260-39015(09268-03010,09268-03020)

NOTICE:

Be careful that the seal is not pinched between SST (guide) and the injector groove. Replace the seal if it becomes damaged.

HINT:

When using SST (guide) to settle the seal into the groove, SST (guide) only needs to be slid upward to the position labeled A in the illustration.

After using SST (guide) to settle the seal into the groove, return SST (guide) to its position labeled B in the illustration.

Install a new injector seal to the injector groove (injector tip side) as shown in the illustration.

SST
09260-39015(09268-03010,09268-03020)

Check that the seal covers the circumference of the injector groove as shown in the illustration.

SST
09260-39015(09268-03010,09268-03020)

NOTICE:

Make sure that the seal does not slip into the welded groove of the injector shown in the illustration. If it does, replace it with a new one.

Slowly slide SST (guide) towards the tip of the injector. When the injector contact surface of SST (guide) aligns with the seal (injector connector side) as shown in the illustration, hold the position for 5 seconds or more to fully align the seal into the injector groove.

SST
09260-39015(09268-03020)

NOTICE:

Be careful that the seal is not pinched between SST (guide) and the injector groove. Replace the seal if it becomes damaged.

HINT:

Set SST (guide) so that its bottom surface and seal are flush.

If there is difficulty in sliding SST upward, slowly wiggle it from side to side while sliding it up the injector little by little.

Using SST (holder), gently press downward on the injector seal (injector tip side). Then slowly slideSST (guide) towards the injector tip to settle the seal into the injector groove.

SST
09260-39015(09268-03010,09268-03020)

NOTICE:

Be careful that the seal is not pinched between SST (guide) and the injector groove. Replace the seal if it becomes damaged.

Slowly slide SST (guide) towards the tip of the injector. When the injector contact surface of SST (guide) aligns with the seal (injector tip side) as shown in the illustration, hold the position for 5 seconds or more to fully align the seal into the injector groove.

SST
09260-39015(09268-03020)

NOTICE:

Be careful that the seal is not pinched between SST (guide) and the injector groove. Replace the seal if it becomes damaged.

HINT:

Set SST (guide) so that its bottom surface and the seal's bottom surface are flush.

If there is difficulty in sliding SST upward, slowly wiggle it from side to side while sliding it up the injector little by little.

After installing the seals, check that the seal is not scratched, deformed or protruding from the injector groove.

NOTICE:

If the seal is scratched, deformed or protruding from the groove, replace it with a new one.

3. INSTALL FUEL INJECTOR

Install a new O-ring, new backup rings (No. 1, No. 2, No. 3) and new E-ring to the fuel injector as shown in the illustration.

Knock Sensor - Installation. 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

NOTICE:

Check that there is no foreign matter or damaged areas in the injector's O-ring groove.

Check that the No. 1 and No. 2 backup rings are installed in the correct direction.

Make sure that the backup rings and O-ring are installed in the correct order.

Check that the alignment openings of the backup rings are not overlapped or stretched as shown in the illustration.

After installing the O-ring, check that it is not contaminated with foreign matter and is not damaged.

Install the injector nozzle holder clamp.

Apply gasoline to the O-ring. Install the nozzle holder clamp by aligning the protruding part of the clamp to the notch of the delivery pipe.

NOTICE:

Make sure that there is no gap between the delivery pipe and clamp.

Check that there is no foreign matter or damage to the injector insertion hole of the delivery pipe.

Insert the injector straight into the delivery pipe without tilting it.

4. INSTALL NO. 1 FUEL DELIVERY PIPE

Install a new injector vibration insulator to the cylinder head.

Apply lubricant to the installation hole of the injector.

Insert the stud bolt into the fuel delivery pipe until the screw threads protrude enough so that a nut can be attached.

NOTICE:

If an injector is dropped or the tips of the injectors are struck, replace it with a new one.

Check that there is no foreign matter or damage to the injector insertion hole of the delivery pipe.

When inserting the fuel delivery pipe, push it in evenly without tilting it.

Install the fuel delivery pipe by uniformly tightening the 2 bolts and 2 nuts in several passes in the order shown in the illustration.

Torque:
21 N*m{ 214 kgf*cm, 15 ft.*lbf}

Connect the 3 connectors and 2 clamps.

5. INSTALL NO. 2 FUEL DELIVERY PIPE

Install new injector vibration insulators to the cylinder head.

Apply lubricant to the installation holes of the injectors.

Insert the stud bolt into the delivery pipe until the screw threads protrude enough so that a nut can be attached.

NOTICE:

If an injector is dropped or the tips of the injectors are struck, replace it with a new one.

Check that there is no foreign matter or damage to the injector insertion hole of the delivery pipe.

When inserting the fuel delivery pipe, push it in evenly without tilting it.

Install the fuel delivery pipe by uniformly tightening the 2 bolts and 2 nuts in several passes in the order shown in the illustration.

Torque:
21 N*m{ 214 kgf*cm, 15 ft.*lbf}

Connect the 3 connectors and 3 clamps.

6. INSTALL NO. 3 FUEL PIPE

Install a new O-ring, new backup rings (No. 1, No. 2) and new E-ring to the fuel injector as shown in the illustration.

Knock Sensor - Installation. 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

NOTICE:

Check that there is no foreign matter or damaged areas in the injector's O-ring groove.

Check that the No. 1 and No. 2 backup rings are installed in the correct direction.

Make sure that the backup rings and O-ring are installed in the correct order.

Check that the alignment openings of the backup rings are not overlapped or stretched as shown in the illustration.

After installing the O-ring, check that it is not contaminated with foreign matter and is not damaged.

Check that the fuel pipe installation end is not contaminated with foreign matter and is not damaged.

Apply gasoline to the O-ring.

Press the fuel pipe and delivery pipe together by hand until there is no gap between them. Then install the No. 3 fuel pipe with the 4 bolts.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

NOTICE:

Do not install the No.3 fuel pipe at an angle.

7. INSTALL NO. 2 FUEL PIPE

Install a new O-ring, new backup rings (No. 1 and No. 2) and new E-ring to the fuel injector as shown in the illustration.

Knock Sensor - Installation. 4GR-FSE ENGINE CONTROL SYSTEM. Lexus IS250 IS220d GSE20 ALE20

NOTICE:

Check that there is no foreign matter or damaged areas in the injector's O-ring groove.

Check that the No. 1 and No. 2 backup rings are installed in the correct direction.

Make sure that the backup rings and O-ring are installed in the correct order.

Check that the alignment openings of the backup rings are not overlapped or stretched as shown in the illustration.

After installing the O-ring, check that it is not contaminated with foreign matter and is not damaged.

Check that the No. 3 fuel pipe installation end is not contaminated with foreign matter and is not damaged.

Apply gasoline to the O-ring and connect the fuel pipe to the delivery pipe.

NOTICE:

Do not install the No.2 fuel pipe at an angle.

Do not install the bolt at this time.

8. INSTALL FUEL PUMP ASSEMBLY

Turn the crankshaft until the flat of the cam is facing the cylinder head cover's fuel pump attachment hole, as shown in the illustration.

HINT:

When installing the fuel pump by following the procedure described above: By not using the crankshaft pointed side to push up the pump activation surface, it is easier to install the fuel pump and No. 2 fuel pipe later.

Pour 30 cc of engine oil through the cylinder head cover's fuel pump attachment hole into the cylinder head oil collector.

Apply a coat of engine oil to the pump activation cam and pump lifter part.

Install a new fuel pump insulator to the cylinder head cover. Then pass the 2 stud bolts through the holes of the fuel pump and set them on the insulator.

NOTICE:

Install the insulator so that the open sides of the metal eyelets are facing outward, as shown in the illustration.

Temporarily install the No.2 fuel pipe sub-assembly to the fuel pump assembly.

NOTICE:

Be careful not to damage the sealing surface of the fuel pipe when temporarily installing the fuel pipe.

Install the 2 nuts and tighten them in several passes.

Torque:
25 N*m{ 255 kgf*cm, 18 ft.*lbf}

Connect the fuel hose.

9. CONNECT NO. 2 FUEL PIPE

Install the No. 2 fuel pipe to the delivery pipe with the 2 bolts.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

Using a 19 mm union nut wrench, connect the fuel pipe.

Torque:
30 N*m{ 306 kgf*cm, 22 ft.*lbf}

HINT:

The torque shown above should be used for tightening without using union nut wrench. When the union nut wrench is used for tightening, the torque should be calculated based on the length of the union nut wrench .

Connect the connector to the fuel pump.

10. INSTALL NO. 1 FUEL PIPE

Install the fuel pipe with the 2 bolts.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

Connect the 2 fuel hoses.

11. INSTALL FUEL PRESSURE PULSATION DAMPER ASSEMBLY

Using SST, install a new gasket and the fuel pulsation damper to the fuel pump.

Torque:
40 N*m{ 408 kgf*cm, 28 ft.*lbf}

HINT:

The torque shown above should be used for tightening without using SST. When the SST is used for tightening, the torque should be calculated based on the length of the SST .

12. REMOVE WATER HOSE JOINT

Connect the water hose joint with the bolt.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

13. INSTALL INTAKE MANIFOLD

Install a new gasket and the intake manifold with the 4 bolts and 4 nuts.

Torque:
21 N*m{ 214 kgf*cm, 15 ft.*lbf}

Connect the SCV position sensor connector.

Connect the DC motor connector for the SCV.

14. INSTALL INTAKE AIR SURGE TANK

Install a new gasket to the intake air surge tank.

Using a 5 mm hexagon socket wrench, install the 6 bolts.

Torque:
Bolts except A:
18 N*m{ 184 kgf*cm, 13 ft.*lbf}

Install the bolt and 2 nuts to the intake air surge tank.

Torque:
Bolt A:
21 N*m{ 214 kgf*cm, 15 ft.*lbf}
Nut:
16 N*m{ 163 kgf*cm, 12 ft.*lbf}

Install the surge tank stay to the intake air surge tank.

Torque:
21 N*m{ 214 kgf*cm, 15 ft.*lbf}

Connect the water hose joint with the bolt.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

Connect the ventilation hose to the intake air surge tank.

Connect the wire harness and hose to the intake air surge tank.

Connect the No. 1 vacuum switching valve assembly to the intake air surge tank.

Torque:
18 N*m{ 184 kgf*cm, 13 ft.*lbf}

Connect the vacuum hose to the intake air surge tank.

15. REMOVE THROTTLE BODY

Install a new gasket to the intake air surge tank.

HINT:

Align the protrusion of the gasket on the intake air surge tank.

Connect the 2 water by-pass hoses to the throttle body.

Install the throttle body with the 4 bolts.

Torque:
10 N*m{ 102 kgf*cm, 7 ft.*lbf}

Connect the throttle motor connector.

16. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE

Install the air cleaner cap with air cleaner hose assembly with the 4 clamps and hose clamp.

HINT:

Be sure to install the air cleaner assembly so that the screw part of the hose clamp is as shown in the illustration.

Install the VSV hose to the air cleaner hose.

Connect the MAF meter connector and clamp to the air cleaner.

17. CONNECT NO. 2 VENTILATION HOSE

Connect the ventilation hose to the cylinder head cover with the clamp.

18. ADD ENGINE COOLANT

Tighten all the plugs and fill the radiator with TOYOTA Super Long Life Coolant (SLLC).

Torque:
13 N*m{ 130 kgf*cm, 9 ft.*lbf}for cylinder block drain cock plug

Add engine coolant.

Specified capacity:
9.1 liters (9.6 US qts, 8.0 lmp. qts)

HINT:

TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology consists of a combination of low phosphates and organic acids).

Contact your TOYOTA dealer for further details.

Slowly pour coolant into the radiator reservoir until it reaches the FULL line.

Press the inlet and outlet radiator hoses several times by hand, and then check the level of the coolant.

If the coolant level is low, add coolant.

Install the radiator cap and reservoir cap.

Bleed air from the cooling system.

NOTICE:

Before starting the engine to warm up the engine, turn the A/C switch OFF.

Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.

HINT:

The thermostat open timing can be confirmed by pressing the inlet radiator hose by hand, and checking when the engine coolant starts to flow inside the hose.

NOTICE:

When pressing the radiator hoses:

Wear protective gloves.

Be careful as the radiator hoses are hot.

Keep your hands away from the radiator fans.

Maintain the engine speed at 2,000 to 2,500 rpm.

Press the inlet and outlet radiator hoses several times by hand to bleed air.

NOTICE:

When pressing the radiator hoses:

Wear protective gloves.

Be careful as the radiator hoses are hot.

Keep your hands away from the radiator fans.

Stop the engine, and wait until the engine coolant cools down to ambient temperature.

NOTICE:

Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

Check the coolant level in the radiator reservoir.

If the coolant level is low, add SLLC to the radiator reservoir FULL line.

19. CHECK FOR ENGINE COOLANT LEAKAGE

NOTICE:

Before performing each inspection, turn the A/C switch OFF.

CAUTION:

Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

Fill the radiator with coolant and attach a radiator cap tester.

Warm up the engine.

Using a radiator cap tester, increase the pressure inside the radiator to 118 kPa (1.2 kgf*cm², 17 psi), and check that the pressure does not drop.

If the pressure drops, check the hoses, radiator and water pump for leaks. If no external leaks are found, check the heater core, cylinder block and cylinder head.

20. CHECK FOR FUEL LEAKAGE

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

NOTICE:

Do not start the engine.

Push the intelligent tester main switch ON.

Select the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump /Speed.

Check the fuel pump operation.

Check for pressure in the fuel inlet tube from the fuel line. Check that sound of fuel flowing in the fuel tank can be heard.

If no sound can be heard, check the integration relay, fuel pump, ECM and wiring connector.

Check for fuel leaks.

Check that there are no fuel leaks anywhere on the system after performing maintenance.

If there is a fuel leak, repair or replace parts as necessary.

21. INSTALL COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

Engage the 11 claws.

Install the cowl top ventilator louver sub-assembly with the 2 clips.

22. INSTALL FRONT WINDSHIELD WIPER ARM AND BLADE ASSEMBLY LH

Operate the wiper, and stop the windshield wiper motor at the automatic stop position.

Clean the wiper arm serrations.

Clean the wiper pivot serrations with a wire brush (when reinstalling).

Install the front wiper arm and blade assembly LH with the nut at the position as shown in the illustration.

Torque:
22 N*m{ 224 kgf*cm, 16 ft.*lbf}

HINT:

Hold the arm hinge by hand to fasten the nut.

Area	Measurement
A	15 to 30 mm (0.59 to 1.18 in.)
B	Approx. 40 mm (1.57 in.)

23. INSTALL FRONT WINDSHIELD WIPER ARM AND BLADE ASSEMBLY RH

Operate the wiper, and stop the windshield wiper motor at the automatic stop position.

Clean the wiper arm serrations.

Clean the wiper pivot serrations with a wire brush (when reinstalling).

Install the front wiper arm and blade assembly RH with the nut at the position as shown in the illustration.

Torque:
22 N*m{ 224 kgf*cm, 16 ft.*lbf}

HINT:

Hold the arm hinge by hand to fasten the nut.

Area	Measurement
A	18.5 to 33.5 mm (0.73 to 1.32 in.)
B	Approx. 20 mm (0.79 in.)

Operate the front wipers while spraying washer fluid on the windshield glass. Make sure that the front wipers function properly and there is no interference with the vehicle body.

24. INSTALL FRONT WIPER ARM HEAD CAP

Install the front wiper arm head cap.

HINT:

Use the same procedures for the RH side and the LH side.

25. INSTALL ROOF DRIP SIDE FINISH MOULDING LH

26. INSTALL ROOF DRIP SIDE FINISH MOULDING RH

27. INSTALL FRONT FENDER PROTECTOR UPPER LH

Engage the claw and the 3 clips, then install the front upper fender protector LH.

Engage the clip on the rubber portion of the cowl top ventilator louver sub-assembly to the front fender protector upper LH.

28. INSTALL FRONT FENDER PROTECTOR UPPER RH

HINT:

Installation procedure of the RH side is the same as that of the LH side.

29. INSTALL V-BANK COVER SUB-ASSEMBLY

Engage the 2 clips on the front of the cover, and then engage the clip on the rear to install the V-bank cover.

NOTICE:

Be sure to engage the clips securely.

Do not apply excessive force or do not hit the cover to engage the clips. This may cause the cover to break.

30. INSTALL ENGINE ROOM SIDE COVER LH

Install the side cover with the 5 clips.

31. INSTALL ENGINE ROOM SIDE COVER RH

Install the side cover with the 2 clips.

32. INSTALL COOL AIR INTAKE DUCT SEAL

Install the intake duct seal with the 11 clips.

33. CHECK FUNCTION THROTTLE BODY

Check the throttle control motor operating sounds.

Turn the engine switch on (IG).

When pressing the accelerator pedal, check the operating sound of the running motor. Make sure that no friction noises emit from the motor.

If friction noise exists, replace the throttle body.

Check the throttle position sensor.

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

Turn the intelligent tester main switch ON.

Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / THROTTLE POS AND THROTTLE POS #2.

Depress the accelerator pedal. When the throttle valve is fully opened, check that the value of the "Throttle Sensor Position" is within the specification.

Standard throttle valve opening percentage:
60% or more

NOTICE:

When checking the standard throttle valve opening percentage, the shift lever should be in the N position.

If the percentage is less than 60%, replace the throttle body.

LEXUS IS250, IS220d / GSE20 ALE20

4GR-FSE ENGINE CONTROL SYSTEM

Lexus IS250 IS220d GSE20 ALE20

KNOCK SENSOR