Subaru 1600 Service Manual page 210

Trouble code 5 I
IG ON, E/G OFF
Disconnect ECM
connector.
Check if
voltage between
check connector's
solenoid valve III
terminal (L/R) and
ground terminal for
drive
(D)
is
below 2V.
YES
Check if
voltage between
solenoid valve HI
connector (L/R) line
and car body is
below 2V.
Check if
voltage between
solenoid valve III
connector (D/W) line
and car body is
below 2V.
NO
NO
NO
EMISSION CONTROL SYSTEM
Disconnect solenoid
valve III connector.
Check if
resistance between
both terminals of
solenoid valve III
is below
IOn.
NO
Replace ECM.
Solenoid valve III (L/R)
circuit harness broken.
Repair.
Replace solenoid
valve III.
YES
1""1
..
X
Replace solenoid
valve III.