CONTROL
SYSTEM
4A
AIR FLOW METER
Inspection
1. Inspect
the air flow meter
body for cracks.
2. Check the resistance
between
terminals
using an
ohmmeter.
Terminal
Ez +. Vs
Ez +. Vc
Ez +B Vs
Ez +v THA
(Air thermo sensor)
Resistance
(0)
20 to 400
100 to 300
200 to 400
-20%
(-4?=)
10,000
to 20,000
0%
(32OF) 4,000 to 7,000
20%
(68OF) 2,000
to 3,000
40%
(104vq
900 to 1,300
60%
(14OOF) 400 to 700
I
F1
.?a Fr
I
OL)
I
3. Press open the measuring
plate with a screwdriver,
measure
the resistance
between
EI and Fc (fuel
pump
switch) and between
Ez and Vs.
El ++ Fc
Ez ++ Vs
Measuring
Plate
Fully closed
Fully open
m
0
20 to 4003
20 to 1,ooon
4. If not correct
replace
it.
4A-65