Lexus ES manuals

Lexus ES: Inspection

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fxs (engine Control) / Mass Air Flow Meter / Inspection

INSPECTION

PROCEDURE

1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

(a) Perform a visual check for any foreign matter on the intake air temperature sensor (thermistor) of the mass air flow meter sub-assembly shown in the illustration.

OK:

There is no foreign matter.

If the result is not as specified, clean the intake air temperature sensor (thermistor).

*a

Intake Air Temperature Sensor (Thermistor)

(b) Clean the intake air temperature sensor (thermistor).

NOTICE:

  • Do not contact the mass air flow meter sub-assembly with the nozzle of the air blow gun.
  • Do not insert the nozzle of the air blow gun into the intake air temperature sensor (thermistor) area.

*a

Air Blow Gun

*b

10 mm (0.394 in.)

*c

Intake Air Temperature Sensor (Thermistor)

(1) Using an air blow gun, clean the intake air temperature sensor (thermistor) area of the mass air flow meter sub-assembly by applying approximately 10 intermittent bursts of air to the intake air temperature sensor (thermistor) area at a pressure of approximately 392 to 981 kPa (4.0 to 10.0 kgf/cm2, 57 to 142 psi).

HINT:

After performing cleaning, read the value of Data List item "Mass Air Flow Sensor" using the Techstream and if the value is not as specified, replace the mass air flow meter sub-assembly.

*a

Air Blow Duration

*b

3 to 6 Seconds

*c

1 Second

*d

Air Blowing

*e

Air Stopped

(c) Check the intake air temperature sensor (thermistor) resistance.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (THA) - 2 (E2G)

Always

0.47 to 19.3 kΩ

If the result is not as specified, replace the mass air flow meter sub-assembly.

*a

Component without harness connected

(Mass Air Flow Meter Sub-assembly)

READ NEXT:

 Installation

INSTALLATION PROCEDURE 1. INSTALL MASS AIR FLOW METER SUB-ASSEMBLY HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Click here (a) Install the mass ai

 Relay

On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT MAIN RELAY (EFI-MAIN NO. 1) (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester

 Sfi System

SEE MORE:

 On-vehicle Inspection

ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the engine running or the engine switch on (IG

 Compass

The compass on the inside rear view mirror indicates the direction in which the vehicle is heading. Operation and displays To turn the compass on or off, press and hold the button for more than 3 seconds. Directions are displayed as follows: ■Conditions unfavorable to correct operatio

© 2016-2025 Copyright www.lexguide.net