Lexus ES: Removal

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fxs (fuel) / Fuel Injector (for Port Injection) / 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 port fuel injector assembly 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
*: When performing learning using the Techstream. Click here
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Control System (for HV Model)
		Pre-collision System (for HV Model)
		Parking Support Brake System (for HV Model)*
		Lighting System (for HV Model)
	Memorize steering angle neutral point	Parking Assist Monitor System (for HV Model)
	Memorize steering angle neutral point	Panoramic View Monitor System (for HV Model)
	Initialize power trunk lid system	Power Trunk Lid System (for HV Model)
Replacement of port fuel injector assembly Replacement of No. 2 fuel pressure sensor Replacement of fuel pump assembly Replacement of throttle body with motor assembly Cleaning the deposits from the throttle body with motor assembly Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.

CAUTION:

Never perform work on fuel system components near any possible ignition sources.
Vaporized fuel could ignite, resulting in a serious accident.
Do not perform work on fuel system components without first disconnecting the cable from the negative (-) auxiliary battery terminal.
Sparks could cause vaporized fuel to ignite, resulting in a serious accident.
To prevent serious injury due to fuel spray from the high-pressure fuel lines, always discharge fuel system pressure before removing any fuel system components.

NOTICE:

After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System)
After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Navigation System)
This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.
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PROCEDURE

1. PRECAUTION

NOTICE:

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

2. DISCHARGE FUEL SYSTEM PRESSURE

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3. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

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4. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY

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5. REMOVE EGR VALVE ASSEMBLY

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6. REMOVE NO. 2 WATER BY-PASS PIPE

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7. DISCONNECT FUEL TUBE SUB-ASSEMBLY

(a) Remove the fuel pipe clamp from the fuel tube connector.

(b) Disconnect the fuel tube sub-assembly from the fuel pump assembly and fuel delivery pipe sub-assembly.

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8. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY

CAUTION:

To prevent serious injury due to fuel spray from the high-pressure fuel lines, always discharge fuel system pressure before removing any fuel system components.

(a) Disconnect the ignition coil connector.

(b) for EGR Valve Bracket Connection Type:

(1) Using a 17 mm union nut wrench, loosen the 2 union nuts of the No. 1 fuel pipe sub-assembly.

	Union Nut
	Bolt

(2) Using an 8 mm socket wrench, remove the bolt.

(d) Loosen the 2 bolts of the fuel pump assembly.

(e) Remove the No. 1 fuel pipe sub-assembly from the fuel delivery pipe and fuel pump assembly.

9. REMOVE FUEL PUMP ASSEMBLY

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10. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY

(a) Disconnect the No. 5 engine wire connector.

(b) Remove the 2 bolts and fuel delivery pipe sub-assembly with the 4 port fuel injector assemblies from the cylinder head sub-assembly.

NOTICE:

Be careful not to drop the port fuel injector assemblies when removing the fuel delivery pipe sub-assembly.

11. REMOVE NO. 1 DELIVERY PIPE SPACER

(a) Remove the 2 No. 1 delivery pipe spacers from the cylinder head sub-assembly.

12. REMOVE INJECTOR VIBRATION INSULATOR

(a) Remove the 4 injector vibration insulators from the cylinder head sub-assembly.

13. REMOVE NO. 5 ENGINE WIRE

(a) Disconnect the 4 port fuel injector assembly connectors and No. 2 fuel pressure sensor connector.

(b) Disengage the 2 clamps to remove the No. 5 engine wire from the fuel delivery pipe sub-assembly.

14. REMOVE PORT FUEL INJECTOR ASSEMBLY

(a) Pull the 4 port fuel injector assemblies out of the fuel delivery pipe sub-assembly.

(b) Remove the O-ring from each port fuel injector assembly.

(c) Attach a tag or label with the corresponding cylinder number to each port fuel injector assembly so that they can be installed to their original locations.

NOTICE:

Cover the port fuel injector assemblies with plastic bags to prevent damage and contamination.

SEE MORE:

System Voltage (BATT) Circuit Short to Ground or Open (P056014)

DESCRIPTION Auxiliary battery power is supplied to the BATT terminal of the hybrid vehicle control ECU in order to store DTCs and freeze frame data. Even if the power switch is turned off, back-up power is supplied. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning

Components

COMPONENTS ILLUSTRATION *A Type A - - *1 EXHAUST MANIFOLD (TWC: Front Catalyst) *2 NO. 1 EXHAUST MANIFOLD HEAT INSULATOR *3 MANIFOLD STAY *4 EXHAUST MANIFOLD TO HEAD GASKET N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part ILLUSTRATION *A

Lexus ES: Removal

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Inspection

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Fuel Main Valve

SEE MORE:

System Voltage (BATT) Circuit Short to Ground or Open (P056014)

Components