Mazda 121 - Page 269

CONTROL SYSTEM
6'd
ffi
o.
3. Place the SST
(Sheet)
on the Engine Slgnal Monitor.
4. Measure the voftage
at each terminal.
(Refer
to
pages
F 114
to F-119.)
5. lf any ECU termjnal voltage is
incorfect, check the related
inpui
or output devices and wiring.
lf
no
problem
is iound,
replace
the ECU.
(Refer
to above.)
Caulion
.
Never apply voltage to SST terminals
A and
g.
6
-d'
ffi
F-l13