Subaru XT 1988 Service Manual page 1366

6-3 WIRING DIAGRAM AND TROUBLESHOOTING
~
FAUL TV CAR-SPEED SENSOR CIRCUIT
No No
Check if speedometer operates properly Determine whether speedometer cable
r--
when driving car at speed greater than operates.
10 km/h (6MPH).
Yes
Yes
Replace speedometer.
I
Repair or replace
speedometer.
No
: Repair connections or harness.
I
Turn ignition switch OF F.
Check if continuity exists between car-speed
sensor and terminal W of signal controller
body harness connector
@.
Yes
No
-I
Replace speedometer.
I
Check if car-speed sensor operates properly.
Yes
Replace signal controller.
94