Mazda 121 Workshop Manual page 180

F
TROUBLESHOOTING GUIDE
INSPECTION
ACTION
6
ls ar bypass solenord valve @OX?
r' p.g€ F-104
SOLENOID
INJECTION BODY
VALVE@\\\
r )
k!
o
No
Replace solenoid valve
7
Are ECU terminal voltages OK?
(Esoec,aly 1C, th and 20)
c? Page F-lOg
Go lo nexl slep
Cn""f io, "uuse
r' Page F-115
F-117
F-l19
8
Connect cliagnoss conneclor tetminals F/P and
GND with iumper wirei does engrne stan
Eneck circult opening relay
c7 Page F-93
a
ff rclay OK, repair or teplace wi€
+
li r€lay noi OK, repiace relay
9
Connect System S€lector to diagnosis connector
and set T€st Switch to SELF TEST
'i is lhere
corecl |gnrtion lmng €t dle aiter warm_up?
e Page F-63
lgnilion timing: aTDC 16 + 1c
,-JE"
Adjust lgntion iiminq
!? Page F-63
1 0 ls engine compression correci?
c7 page B-lo
Englne compres€lon (ilinimum):
1.030 kPa (10.5 ksr'cn', r49 Fel)-300 rPm
Check englne condition
c? Page B-1o
.Worn pislon, pLston nngs or cy lnoer
. Delecuve cylinder head gaskei
. Dlsroded cylinder head
. lmpropet valve seating
.valve st ckins in guide
1 1
Try known good ECUI does condilion improve?
F-24