T100 Pickup 4WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1993)
Air Flow Meter/Sensor: Testing and Inspection
INSPECTION
On Vehicle
1. Disconnect the connector from the Volume Air Flow Meter.
Air Flow Meter Connector Terminal Identification
2. Using an ohmmeter measure the resistance between each terminal as shown:
Between terminals E1 and FC
measuring plate fully closed: infinity
Between terminals VC and E2
always: 200 - 400 ohms
Between terminals THA and E2
at -20°C (-4°F): 10 - 20 k ohms
at 0°C (32°F): 4 - 7 k ohms
at 20°C (68°F): 2 - 3 k ohms
at 40°C (104°F): 0.9 - 1.3 k ohms
at 60°C (104°F): 0.4 - 0.7 k ohms
3. If not within specifications, replace Volume Air Flow Meter.
Off Vehicle
Air Flow Meter Connector Terminal Identification
1. Using an ohmmeter measure the resistance between each terminal as shown:
Between terminals E1 and FC
measuring plate fully closed: infinity
measuring plate other than closed: zero
Between terminals VC and E2
always: 200 - 400 ohms
Between terminals THA and E2
at -20°C (-4°F): 10 - 20 k ohms
at 0°C (32°F): 4 - 7 k ohms
at 20°C (68°F): 2 - 3 k ohms