Subaru XT 1988 Service Manual page 361

2-7
FUEL INJECTION SYSTEM
TROUBLE CODE (15): FUEL INJECTOR [1800cc model]
Control unit
51 WL
52 WL
@
(Black)
~
Aesistor
Fig.
83
Check if trouble code is out-
NO
Check terminals of
control unit.
putted in D·check mode.
(See page 56.)
1
YES
Turn ignition switch OFF
(engine off).
1
Disconnect test mode
connector.
l
Disconnect control unit con·
nector.
!
Check if voltage across body
and terminals 51 (WL) and 52
NO
(WL) of connector (body side)
is greater than 10 V.
~
YES
Check if terminals 51 and 52
YES
r
A ' . I
are open or disconnect.
I epalr term lOa .
~
NO
Aeplace control unit.
Fuel injector
No.3
Fuel injector
No.4
@
(Black)
®®
~
~
(Black)
r-1
Disconnect injector connectors
#3 and #4.
1
Check if resistance between
terminals of each injector is
2 - 3,n.
l
YES
Check if voltage across body
and power terminals (AI and
(AL) of connector (body side)
is greater than 10V.
!
YES
Disconnect resistor connector.
1
Check if resistance between
terminals (W) and (B's) of con·
nector (resistor side) is 5.7-
6.5,n.
~
YES
Check if voltage across termi·
nal 5 (A) of connector (body
side) and body is greater than
10V.
1
YES
Aepair harness from resistor to
fuel injector.
78
NO
NO
NO
NO
L2-1500
_I Aeplace fuel injector.
Aepair harness from
fuel injector and
control unit.
I .
I Aeplace reSistor.
I
Aepair harness from
battery to resistor.