Sequoia 4WD V8-5.7L (3UR-FE) (2009)
Air Flow Meter/Sensor: Testing and Inspection
Inspection
3UR-FE ENGINE CONTROL: MASS AIR FLOW METER: INSPECTION
INSPECTION
1. INSPECT MASS AIR FLOW METER
(a) Check the output voltage.
(1) Apply battery voltage across terminals 1 (+B) and 2 (E2G).
NOTE: While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit
may occur.
(2) Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).
(3) Blow air into the MAF meter, and check that the voltage fluctuates.
If the result is not as specified, replace the MAF meter.
(b) Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown in the illustration.
OK:
There is no foreign material.
If the result is not as specified, replace the mass air flow meter.
(c) Check the IAT sensor.