Lexus ES: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. FUEL PUMP ASSEMBLY OPERATION
(a) Check fuel pressure.
(1) Connect the Techstream to the DLC3.
(2) Start the engine.
(3) Turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine / Active Test / Control the Target Fuel Pressure Offset.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Target Fuel Pressure Offset |
| Data List Display |
|---|
| Fuel Pressure (High) |
(5) Select the Data List item: Fuel Pressure (High)
(6) Check that the fuel pressure fluctuates when the target fuel pressure changes.
HINT:
The target fuel pressure operation decreases the target fuel pressure by 12.5% or increases the target fuel pressure by 24.8%.
If the result is not as specified, replace the fuel pump assembly or fuel pressure sensor (fuel delivery pipe with sensor assembly LH).
(b) Check operating sound.
(1) Remove the V-bank cover sub-assembly.
Click here .gif)
(2) Start the engine.
(3) Using a sound scope, check the operating sound of the fuel pump assembly.
If no sound can be heard, check the fuel pump assembly, wire harness and ECM.
(4) Stop the engine.
(5) Install the V-bank cover sub-assembly.
Click here
READ NEXT:
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
Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL PUMP ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condit
Installation
INSTALLATION PROCEDURE 1. TEMPORARILY INSTALL FUEL PUMP ASSEMBLY (a) Turn the crankshaft pulley until the flat of the camshaft faces the fuel pump lifter assembly. HINT: This prevents the camshaft
SEE MORE:
Data List / Active Test
DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. The actual values may differ from the values listed in the chart under "Reference Value"
Components
COMPONENTS ILLUSTRATION *1 REAR BUMPER ASSEMBLY *2 REAR COMBINATION LIGHT COVER LH *3 REAR COMBINATION LIGHT COVER RH - - ILLUSTRATION *A w/ Hands Free Power Trunk Lid - - *1 KICK DOOR CONTROL SENSOR WITH BRACKET - - ILLUSTRATION *A w/ Parking Supp
