Mass Air Flow Meter Inspection

Check the output voltage.

1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
   

   NOTICE:

   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 the negative (-) tester probe to terminal 2 (E2G).
   

3. Blow air into the intake mass air flow meter sub-assembly and check that the voltage fluctuates.
   

   Text in Illustration

   *a	Component without harness connected (Intake Mass Air Flow Meter Sub-assembly)
   	Air

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

Perform a visual check for any foreign matter on the platinum hot wire (heater) of the intake mass air flow meter sub-assembly shown in the illustration.

OK:

There is no foreign matter.

Check the intake air temperature sensor.

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   4 (THA) - 5 (E2)	-20°C (-4°F)	12.5 to 16.9 kΩ
   	20°C (68°F)	2.19 to 2.67 kΩ
   	60°C (140°F)	0.50 to 0.68 kΩ

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