This is what i have found with keyword vane on my engine. no result against VAF.
image on url below shows how vaf looks like
Vane Airflow VAF Sensor
but did not see any such thing on this vehicle.
it has a variable resistor, if you are referring to, which might be a similar thing and adjusts air to fuel mixture ratio.
Diagram 45-02: VANE PUMP & RESERVOIR (POWER STEERING)
part 44360 : RESERVOIR ASSY, VANE PUMP OIL
part 44305 : CAP SUB-ASSY, VANE PUMP OIL RESERVOIR
part 44443B : BRACKET, VANE PUMP
part 44442A : BRACKET, VANE PUMP, REAR
part 44320 : PUMP ASSY, VANE
Diagram 16-05: V-BELT
part 44310A : BELT, V(FOR VANE PUMP)