Mass Flow Meter Questions

[Robert W. Hughes]

Well, I need a little help. Spent several days going through local
pick-a-part places and finally found one mass flow meter on a 1987
Chevrolet Celebrity.

I was expecting three pins on the connector but there were five. After
some digging I found this:
Marked on sensor	wire color	ECM connection
M			Tan		F16 MAF signal
M			Purple		5v return
+			Orange		MAF relay to +12v
-			Black-white	Ground
F			Brown-white	F10 MAF signal

I connected the thing to 12volts and ground but could get no response
from either the M or F lines. Does anybody know what these are and what
sort of signal I should see?
-- 
Robert W. Hughes (Bob)
BackYard Engineering
Houston, Texas
rwhughe at ev1.net