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Home >> Lexus >> 2002 >> GS 430 V8-4.3L (3UZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Sensors and Switches - Computers and Control Systems >> Air Flow Meter/Sensor >> Testing and Inspection
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Air Flow Meter/Sensor: Testing and Inspection

INSPECTION

1. REMOVE AIR FLOW METER
a. Disconnect the air flow meter connector.
b. Remove the 2 screws, air flow meter and O-ring.







2. INSPECT AIR FLOW METER RESISTANCE
Using an ohmmeter, measure the resistance between terminals THA and E2.

If the resistance is not as specified, replace the air flow meter.




3. INSPECT AIR FLOW METER OPERATION
a. Connect the air flow meter connector.
b. Turn the ignition switch to ON.
c. Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G.
d. Blow air into the air flow meter, and check that the voltage fluctuates.
If operation is not as specified, replace the air flow meter.
e. Turn the ignition switch LOCK.
f. Disconnect the air flow meter connector.

4. INSTALL AIR FLOW METER
a. Install a new O-ring and the air flow meter with the 2 screws.
b. Connect the air flow meter connector.
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