Subaru XT 1988 Service Manual page 1375

WIRING DIAGRAM AND TROUBLESHOOTING
6-3
~
FAULTY SUB-FAN CONTROL CIRCUIT - Part II
(The sub-fan will not operate when the main fan operates or when the air conditioner is ON.)
Turn ignition switch ON.
No
: 8-11
I
Check if fail lamp comes on.
I
Yes
Start engine.
No
J
81
I
Check if fail lamp goes out.
I
I -
Yes
No
1
Repair connections or harness.
I
Check if 12 volts are produced at terminal
LR of sub-fan relay body harness connector
when main fan operates and/or when air
conditioner is ON.
Yes
No
l
Repair connections or harness.
I
Check if 12 volts are produced at terminal L
of sub-fan relay body harness connector.
Yes
Ground terminal YW of sub-fan relay
body harness connector.
No
: Replace sub-fan relay.
J
Check if 12 volts are produced at terminal
L Y of sub-fan relay body harness connector
when main fan operates and/or when air
conditioner is ON.
Yes
No
l
Repair harness.
I
See if resistance is
on
between terminal (8)
of sub-fan motor and vehicle body
(grounding).
Yes
103