Lexus ES: Removal

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fxs (fuel) / Fuel Pump (for High Pressure) / 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 fuel pump 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 fuel pump 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.

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. 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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6. REMOVE NO. 2 WATER BY-PASS PIPE

(a) Disengage the clamp to disconnect the HV air conditioning wire.

(b) Slide the clip and disconnect the No. 8 water by-pass hose from the No. 2 water by-pass pipe.

(c) Using an 8 mm socket wrench, remove the 2 bolts (A) and separate the No. 2 water by-pass pipe from the intake manifold.

(d) Remove the bolt (B) and No. 2 water by-pass pipe from the cylinder block sub-assembly.

7. 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.

(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.

8. REMOVE FUEL PUMP ASSEMBLY

NOTICE:

When replacing the fuel pump assembly, it is necessary to replace the No. 1 fuel pipe sub-assembly with a new one.

(a) Disconnect the fuel pump assembly connector.

(b) Remove the 2 bolts, fuel pump assembly and fuel pump flange from the cylinder head cover sub-assembly.

(d) Remove the fuel pump lifter assembly from the fuel pump lifter guide.

(e) Remove the fuel pump spacer gasket from the cylinder head cover sub-assembly.

SEE MORE:

On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT RAIN SENSOR (a) Disconnect the rain sensor connector. *a Front view of wire harness connector (to Rain Sensor) (b) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Conditi

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Vehicle Proximity Notification System DTC No. Detection Item Link B1350 Speaker Circuit U0129 Lost Communication with Brake System Control Module U0140 Lost Communication with Body Control Module U0293 Lost Communication wit

Lexus ES: Removal

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Inspection

Installation

Fuel Pump Ecu

SEE MORE:

On-vehicle Inspection

Diagnostic Trouble Code Chart