Subaru XT 1988 Service Manual page 367

2-7
FUEL INJECTION SYSTEM
TROUBLE CODE (25): FUEL INJECTOR [2700cc model]
Control unit
Fuel injector
No.3
@
(Black)
53 WV ~w~v
________________
~
Fuel injector
No.4
@])
(Black)
~
wv
rW~G~ __________________ ~ ________ ~
A
rA~Y
__________________
~
~
__
~A~ rA~
______________________________
~
@
(Black)
Fusible link
~
L2-1504
Fig. 89
Check if trouble code is out·
NO
Check terminals of
r--I
Dis,connect injector connectors
control unit.
putted in o.check mode.
(See page
56.)
#3 and
#4.
!
YES
!
Turn ignition switch OFF Check if resistance between
NO
(engine off).
terminals of each injector is
I Aeplace fuel injector.
1
13 -14.5
n.
l
YES
Disconnect test moda
connector.
Check if voltage across body
Aepair harness from
!
and power terminals (A) and
NO
fuel injector and
(RY) of connector (body side)
control unit.
is greater than 10 V.
Disconnact control unit con-
~
YES
nector.
!
Disconnect engine harness
Check if voltage across body
connector from body harness
connector.
and terminals 53 (WY) and 54
NO
!
YES
(WY) of connector (body side)
is greater than
10
V.
!
YES
Check if voltage across terminal
NO
Repair harness from
(A) of body harness connector
battery to body
Check if terminals 53 and 54
and body is greater than 10 V.
harness connector.
YES
I R ' .
are open or disconnect.
I
epalr terminal.
!
YES
J
NO
Repair harness from engine
Replace control unit.
harness connector to injector.
84