Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during intake manifold removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: When performing learning using the Techstream.

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Battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane departure alert system (w/ Steering Control)

Pre-collision system

Intelligent clearance sonar system*

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking assist monitor system

Panoramic view monitor system

  • Replacement of fuel injector assembly
  • Replacement of fuel pressure sensor (fuel delivery pipe with sensor assembly)
  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly

Inspection after repair

  • Poor idle, etc.
  • Engine start function, etc.

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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2. DISCHARGE FUEL SYSTEM PRESSURE

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3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

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4. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

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5. REMOVE FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY

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6. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY

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7. REMOVE V-BANK COVER SUB-ASSEMBLY

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8. DISCONNECT VENTILATION HOSE

(a) Slide the clip and disconnect the ventilation hose from the intake air surge tank assembly.

9. DISCONNECT PURGE VALVE (PURGE VSV)

(a) Disconnect the No. 1 fuel vapor feed hose from the intake air surge tank assembly.

(b) Remove the bolt and disconnect the purge valve (purge VSV) from the intake air surge tank assembly.

10. REMOVE NO. 2 SURGE TANK STAY

(a) Remove the 2 bolts and No. 2 surge tank stay from the intake air surge tank assembly and camshaft housing RH.

11. REMOVE INTAKE AIR SURGE TANK ASSEMBLY

(a) Disconnect the vacuum switching valve (for ACIS) connector.

(b) Disengage the 2 clamps to disconnect the vacuum hose sub-assembly from the intake air surge tank assembly.

(c) Disengage the 2 clamps to disconnect the vacuum hose sub-assembly from the intake air surge tank assembly.

*1

Vacuum Hose Sub-assembly

*2

Vacuum Hose

*3

No. 2 Air Tube

(d) Disengage the clamp to disconnect the vacuum hose from the intake air surge tank assembly.

(e) Disengage the clamp to disconnect the No. 2 air tube from the intake air surge tank assembly.

(f) Remove the 5 bolts, 2 nuts and intake air surge tank assembly from the intake manifold.

Bolt

Nut

(g) Remove the plug from the intake air surge tank assembly.

12. REMOVE AIR SURGE TANK TO INTAKE MANIFOLD GASKET

(a) Remove the air surge tank to intake manifold gasket from the intake air surge tank assembly.

13. REMOVE NO. 1 V-BANK COVER BRACKET

HINT:

Perform this procedure only when replacement of the No. 1 V-bank cover bracket is necessary.

(a) Remove the 2 No. 1 V-bank cover brackets from the intake air surge tank assembly.

14. REMOVE NO. 2 ENGINE MOUNTING STAY RH

(a) Remove the bolt and disconnect the wire harness clamp from the wire harness clamp bracket.

(b) Remove the bolt and separate the wire harness clamp bracket from the No. 2 engine mounting stay RH.

(c) Remove the bolt, 2 nuts and No. 2 engine mounting stay RH from the engine mounting insulator sub-assembly RH.

Bolt

Nut

(d) Remove the bolt and No. 2 engine mounting stay RH from the intake manifold and front No. 1 engine mounting bracket LH.

15. DISCONNECT FUEL TUBE SUB-ASSEMBLY

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16. REMOVE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY

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17. REMOVE NO. 1 DELIVERY PIPE SPACER

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18. REMOVE INJECTOR VIBRATION INSULATOR

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19. REMOVE INTAKE MANIFOLD

(a) Remove the 4 bolts, 4 nuts and intake manifold from the cylinder head sub-assembly.

Bolt

Nut

20. REMOVE NO. 1 INTAKE MANIFOLD TO HEAD GASKET

(a) Remove the 2 No. 1 intake manifold to head gaskets from each cylinder head sub-assembly.

21. REMOVE STUD BOLT

HINT:

If a stud bolt is deformed or the threads are damaged, replace it.

(a) Using an E6 "TORX" socket wrench, remove the 2 stud bolts from the intake manifold.

    Installation

    Intake System

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Electronically Controlled Brake System(for Hv Model): Calibration
    CALIBRATION DESCRIPTION (a) After replacing any VSC related components or performing wheel alignment adjustment, clear and read the sensor calibration data. Refer to the table below and then perform the necessary operation according to the part to be replaced in order to perform calibration. NOTICE: ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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