2NZ-FE ENGINE CONTROL  MASS AIR FLOW METER  INSPECTION  


PROCEDURE

Hide 22204 1.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

a.
A190679
0.927,2.042 1.354,0.719 1.354,0.719 1.74,0.719 false 1.792,3.094 1.385,3.094 1.385,3.094 1.021,2.531 false 1.802,0.625 2.125,0.854 0.323,0.229 10 false *a 1.885,3.01 2.219,3.208 0.333,0.198 10 false *b
*a Platinum Hot Wire (Heater)
*b Temperature Sensor (Thermistor)


Perform a visual check for any foreign matter on the platinum hot wire (heater) and 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, replace the mass air flow meter sub-assembly.


b.
A226758
2.24,0.885 2.458,0.885 2.458,0.885 2.792,1.354 false 2.302,0.51 2.563,0.51 2.563,0.51 2.938,1.344 false 1.99,0.417 2.354,0.615 0.365,0.198 10 false THA 2.031,0.802 2.281,1 0.25,0.198 10 false E2 0.031,0.031 0.219,0.26 0.188,0.229 10 false *a
*a Component without harness connected
(Mass Air Flow Meter Sub-assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
1 (THA) - 2 (E2) -20°C (-4°F) 13.6 to 18.4 kΩ
20°C (68°F) 2.21 to 2.69 kΩ
60°C (140°F) 0.49 to 0.67 kΩ


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