Mazda 121 - Circuit Diagram

F
SELF.DIAGNOSIS
FUNCTION
Troubleshootlng
lf a malfunction
c6de
number iS Shown
on the
SST, check
for
the cause
by Using
lhe
chart
related to the
codg
number
shown.
COOE
o.
O:I
IDTRIBUTOR
I{E.SIGNAL)
STEI
NSPECNON
ACTION
ls
lhere a
poor
conn€ction
in distributor
circui0
Repair or
replace wnng
No
2 ls there
continud
b€tween distributor
terminal
wirc
(B/LG)
and
grcund?
Go
to next
gep
Check
for open circuit
in wirng
ifom distributor
to
ground
3
ls there battery
voltage at disltibutor
tetminal
NO
Ch€ck
lor
open
circut
in wiing
trom
dislibutor
to
main
relay
(fUEl
INJ
relay)
ls lhere aoorox.
5V at ECU
temlnal 2E?
{Wilh
distributor connector
disconnected)
Go to
next slep
neplace ECU
5
ls there approx.
5V dist bLrtor
terminal_wre
(G/R)?
(At
harneseside connector
with discon_
Feplace
dist butor
NO
Check
lor snort or
open
circuit in
wring lrcm disldbutor
ECU terminal
2E
Circult
Diagram
O|sTR|aUTOR
IGNITION
swrTcH
BATTEFIY
TO
IGNITION
swtTcH
TO TACHOMEIEFi
TO DIAGNOSIS
CONNECTOR
IGNITEF
DIS]RIBUTOF
G/B
F-70