Subaru XT 1988 Service Manual page 342

FUEL INJECTION SYSTEM
Troubleshooting for Engine Starting Failure
1. GROUND & CONTROL UNIT POWER SUPPLY
Fig. 75
Control unit
10
SR
20
BR
61
R
60
BR
57~----------------------------------------~
56 B
_ 62!--'-'R _ _ _ _ _ _ _ _ _ ---j
27 WR
35 WR
19I-'B:..:.W'-------------l
39 GW
® 1::1 •• 1 J 1
t
I
I
I I 1
~
@CrTITIJ
Ignition relay
@
=
t!E
Fusible link
~R---------~~>C~-----o(BB
Diode
r-B_W---O----...D--.--o(B IG
®
Fuse No. 11
it
@
~
g]
Turn ignition switch OFF.
)
Check if right intake manifold ground
YES
I
Tighten bolts.
~
terminal is grounded properly. I
l
NO
Disconnect control unit connector.
~
Check if connector between body
YES
harness and engine harness is discon-
J
Connect properly.
nected.
Check if resistance is less than 10
n
between body and terminals 10 (BA),
NO
~
NO
20 (BA). 60 (BA), 61 IBA), 56 (B)
I - - -
and 57 IB) of connector (body side),
Aepair harness.
respect ivel y.
~
YES
Check if at least 10V are present
2-7
L2-1192
I
I
Turn ignition switch ON (engine off). )
across body and terminals 27 (WA),
NO
.1
Check battery terminals, fuse, igni-
I
I
tion relay and ignition switch.
35 (WA). 62 IR) and 19 (BW) of
connector (body sidel.
~
OK
~
YES
I
Repair harness.
I
Power supply and grounding circuits
are OK.
+
-
59