Subaru XT 1988 Service Manual page 1371

WIRING DIAGRAM AND TROUBLESHOOTING 6-3
~
FAUL TV PUMP MOTOR DRIVE CIRCUIT
Turn ignition switch OFF.
I
Connect terminals BR and GY of check
connector.
Turn ignition switch ON.
No
: Replace signal controller.
J
Check if at least 0.5 volts are produced at
terminal W of signal controller body harness
connector
@
for 10 seconds.
Yes
Replace motor pump ASSY.
99