Subaru XT 1988 Service Manual page 349

2-7
FUEL INJECTION SYSTEM
-r
Check if voltage across terminal 6
NO
(LS) of control unit connector and
body changes from 0 - 10V (mini-
mum) alternately every 1.5 seconds.
YES
Check if voltage across terminal (R)
NO
of fuel pump relay and body is
~
Repair harness from battery to relay.
J
greater than 10 V.
YES
Replace relay.
YES
.1
Check if terminal 6 is open or discon-
1
YES
I Check if voltage is greater than 10V.
L
j
Repair terminal.
I
J
-l
nected.
J I
NO
J
NO
I
Replace control unit.
J
Check if voltage across terminal (LS)
YES
J
Repair harness from relay to control
J
of fuel pump relay and body is
greater than 10 V.
I
unit.
NO
Check if voltage·across terminal (SW)
YES
of fuel pump relay and body is
t
Replace relay.
J
greater than 10 V.
NO
Repair harness from battery to relay.
66