Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1UR-FE ENGINE CONTROL
MASS AIR FLOW METER - INSPECTION
| 1. INSPECT MASS AIR FLOW METER ASSEMBLY |
Check the output voltage.
Apply battery voltage across terminals 1 (+B) and 2 (E2G).
| *a | Component without harness connected (Mass Air Flow Meter) |
 | Air |
- 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.
Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG) and the negative (-) tester probe to terminal 2 (E2G).
Blow air into the mass air flow meter and check that the voltage fluctuates.
If the result is not as specified, replace the mass air flow meter assembly.
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 matter.
| *1 | Platinum Hot Wire (Heater) |
If the result is not as specified, replace the mass air flow meter assembly.
Check the intake air temperature sensor.
| *1 | Resistance | *2 | Temperature |
| *3 | Acceptable Range | - | - |
| *a | Component without harness connected (Mass Air Flow Meter) | - | - |
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 4 (THA) - 5 (E2) 20°C (68°F) 2.19 to 2.67 kΩ 4 (THA) - 5 (E2) 60°C (140°F) 0.50 to 0.68 kΩ
If the result is not as specified, replace the mass air flow meter assembly.