2NZ-FE ENGINE CONTROL MASS AIR FLOW METER INSPECTION
PROCEDURE
22204
1.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
a.

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.

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.