Subaru XT 1988 Service Manual page 1368

6-3 WIRING DIAGRAM AND TROUBLESHOOTING
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FAUL TV TEMPERATURE SENSOR CIRCUIT
Turn ignition switch OFF.
I
No
Check if ambient temperature is above
Conduct test in a place where ambient
-lO°C (14°F).
temperature is above -lO°C (14°F).
Yes
No
Check if continuity exists between
I Repair connections or harness.
temperature sensor and signal controller.
Yes
No
I Repair temperature sensor. Check if resistance of temperature sensor is
5,000 ± 150
n
when ambient temperature is
25°C (noF).
Yes
Replace signal controller.
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