Installation [08/2015 - ]: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Area to be Cleaned

   NOTE:

   • Do not clean the tip of the direct fuel injector assembly.
   • Do not use a wire brush to clean the direct fuel injector assembly.
   • If a direct fuel injector assembly is dropped or the tip of the direct fuel injector assembly is struck, replace it with a new one.
2. Apply engine oil to the direct fuel injector assembly contact surface of SST (guide), then attach SST (guide) to the direct fuel injector assembly with the chamfer facing the tip of the direct fuel injector assembly as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	SST (Guide)
   *b	Chamfer

   • SST: 09260-39021 
     1. 09261-03020
3. Install a new fuel injector seal to SST (holder).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Fuel Injector Seal
   *a	SST (Holder)
   *b	Correct
   *c	Incorrect

   • SST: 09260-39021 
     1. 09261-03011
   NOTE:

   Be careful not to install the fuel injector seal to SST (holder) at an angle. Doing so will stretch the fuel injector seal.

4. Install SST (holder) with the fuel injector seal to the tip of the direct fuel injector assembly. Slide the fuel injector seal downward into the direct fuel injector assembly groove with your fingers as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	SST (Holder)
   *b	SST (Guide)

   • SST: 09260-39021 
     1. 09261-03011
     2. 09261-03020

   HINT: 

   Check that the fuel injector seal is seated in the direct fuel injector assembly groove as shown in the illustration.

5. Slowly slide SST (guide) toward the tip of the direct fuel injector assembly. When the direct fuel injector assembly contact surface of SST (guide) aligns with the fuel injector seal as shown in the illustration, hold the position for 5 seconds or more to fully seat the fuel injector seal into the direct fuel injector assembly groove.
   • SST: 09260-39021 
     1. 09261-03020

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	SST (Guide)

   NOTE:

   Make sure the fuel injector seal is not pinched between SST (guide) and the edge of the direct fuel injector assembly groove. Replace the fuel injector seal if it becomes damaged.

   HINT: 

   • Set SST (guide) so that its bottom surface is flush with the fuel injector seal.
   • If it is difficult to slide SST (guide) upward, slowly wiggle it from side to side while sliding it up the direct fuel injector assembly little by little.
6. After installing the fuel injector seals, check that they are not scratched, deformed or protruding from the direct fuel injector assembly groove.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Normal
   *b	Protruding
   *c	Deformed
   *d	Correct
   *e	Incorrect

   NOTE:

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

HINT: 

Perform "Inspection After Repair" after replacing a direct fuel injector assembly.

Refer to INITIALIZATION [08/2015 - 09/2018] , or refer to INITIALIZATION [09/2018 - 09/2019] , or refer to INITIALIZATION [09/2019 - ]

1. Install a new injector vibration insulator and a new C-ring to the direct fuel injector assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Direct Fuel Injector Assembly
   *2	C-ring
   *3	Injector Vibration Insulator
   *a	Taper

   NOTE:

   • Install the taper of the injector vibration insulator by aligning it with the taper of the direct fuel injector assembly.
   • Check that the C-ring is securely seated in the groove of the direct fuel injector assembly.
2. Install a new O-ring and a new No. 1 fuel injector back-up ring to each direct fuel injector assembly as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	No. 1 Fuel Injector Back-up Ring	*2	O-ring
   *a	No. 1 Fuel Injector Back-up Ring Opening	*b	Overlapped
   *c	Stretched	*d	Correct
   *e	Incorrect	-	-

   NOTE:

   • Check that there is no foreign matter or damage on the O-ring groove of the direct fuel injector assembly.
   • Make sure that the No. 1 fuel injector back-up ring is installed in the correct orientation.
   • Make sure that the No. 1 fuel injector back-up ring and O-ring are installed in the correct order.
   • Check that the opening of the No. 1 fuel injector back-up ring is 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.
3. With the notch of a new No. 3 fuel injector back-up ring facing downward, install the direct fuel injector assembly to the No. 3 fuel injector back-up ring as shown in the illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Direct Fuel Injector Assembly
   *2	No. 3 Fuel Injector Back-up Ring
   *a	Notch

   NOTE:

   • Make sure that the No. 3 fuel injector back-up ring is installed in the correct orientation.
   • After installing the No. 3 fuel injector back-up ring, make sure there is no damage or foreign matter.
4. Install the nozzle holder clamp to each direct fuel injector assembly.
5. Align the protrusion of the nozzle holder clamp with the positioning hole of the fuel delivery pipe sub-assembly and insert the direct fuel injector assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Protrusion
   *b	Positioning Hole
   	No Gap

   NOTE:

   • Make sure that there is no foreign matter or damage inside the direct fuel injector assembly installation holes (fuel delivery pipe sub-assembly).
   • Do not allow gasoline to get on the O-rings or inside the installation holes.
   • If it is difficult to insert the direct fuel injector assembly, apply new engine oil to the chamfer of the direct fuel injector assembly installation hole of the fuel delivery pipe sub-assembly. Be careful not to allow the direct fuel injector assembly to fall out of the fuel delivery pipe sub-assembly.
   • Do not tilt the direct fuel injector assembly when inserting it into the fuel delivery pipe sub-assembly.

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

     *1	O-ring	*2	Fuel Delivery Pipe Sub-assembly
     *a	Correct	*b	Incorrect

   • Check that there is no gap between the fuel delivery pipe sub-assembly and the nozzle holder clamp.
   • As direct fuel injector assemblies with different flow classification numbers are incompatible, make sure the 4 direct fuel injector assemblies have the same flow classification number (the number to the left of the QR code (1, 2 or 3)).

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

     *a	QR Code
     *b	Flow Classification Number

   HINT: 

   When replacing the direct fuel injector assemblies for all cylinders, it is not necessary to use the same flow classification number as those currently installed to the vehicle. However, make sure to replace the direct fuel injector assemblies with new ones that all have the same flow classification number (1, 2 or 3).

1. Apply lubricant to the direct fuel injector assembly installation holes of the cylinder head sub-assembly.
2. Temporarily install the fuel delivery pipe sub-assembly so that the stud bolts protrude enough to install the nuts.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Protruding enough to install nut

   NOTE:

   • If a direct fuel injector assembly is dropped or the tip of a direct fuel injector assembly is struck, replace it with a new one.
   • Check that there is no foreign matter or damage on the direct fuel injector assembly installation holes of the cylinder head sub-assembly.
   • When installing the fuel delivery pipe sub-assembly, push it in evenly without tilting it.
3. Install the fuel delivery pipe sub-assembly by uniformly tightening the 3 bolts and 2 nuts in the order shown in the illustration.
   Fig 1: Fuel Delivery Pipe Sub-Assembly Bolt And Nut Tightening Sequence

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   	Bolt
   	Nut

   Torque: 34 N.m (347 kgf/cm, 25 ft.lbf) 

   NOTE:

   Make sure that there is no oil on the bolt threads and nut.

1. Connect the 4 direct fuel injector assembly connectors.
2. Connect the sensor wire to the fuel delivery pipe sub-assembly with the 2 bolts.

   Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

3. Connect the fuel pressure sensor connector.

See step  2

See step  3

See step  4

Refer to INSTALLATION [08/2015 - ]

Refer to PROCEDURE - Step 1

1. Perform "Inspection After Repair" after replacing a direct fuel injector assembly.

   Refer to INITIALIZATION [08/2015 - 09/2018] , or refer to INITIALIZATION [09/2018 - 09/2019] , or refer to INITIALIZATION [09/2019 - ]