Subaru XT 1988 Service Manual page 1374

6-3 WIRING DIAGRAM AND TROUBLESHOOTING
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FAULTY SUB-FAN CONTROL CIRCUIT - Part I
(The radiator sub-fan will not stop when the steering wheel is turned at least 250 deg/sec_ while the engne is off,
the air conditioner is ON and/or engine coolant temperature is so high the main fan operates_)
Yes
Yes
Check if sub-fan operates when air condi- Check if sub-fan operates when terminal LR I---
tioner is OFF and if main fan stops when
or YW on sub-fan relay energizing coil side
engine is cold_ is disconnected_
No
No
Repair harness_
1
r
Replace sub-fan_ J
No
Check if sub-fan control circuit operates
Repair in accordance with procedures
properly if test is conducted in accordance
with
[[IJ.
described in
[[IJ
and subsequent steps_
Yes
Replace signal controller.
102