Subaru SVX 1992 Manual page 330

FUEL INJECTION SYSTEM
[T9M6] 2-7
1 . CHECK INPUT SIGNAL FOR ECU .
1) Lift up the vehicle .
2) Start the engine, and drive the wheels .
At this time, if speedometer does not operate, go to
CHECK 2.
3) Measure voltage between ECU connector terminal
and body.
Connector Fr Terminal/Specified voltage
(1359) No. 3 - Body/0 Fs 5 V
2. CHECK POWER SUPPLY AND GROUND LINE
OF ECU .
1) Turn ignition switch to "OFF" .
2) Disconnect ECU connector .
3) Turn ignition switch to "ON".
4) Measure voltage between ECU connector terminal
and body to check power supply line .
Connector fr Terminal/Specified voltage
(1359) No . 2 - Body/10 V,min.
(1359) No. 13 - Body/10 V,min.
5) Measure resistance between ECU connector termi-
nal and body to check ground line .
Connector £r Terminal/Specified resistance
(1359) No . 11 - Body/0 C1
(1359) No. 22 - Body/0 11
3. CHECK HARNESS CONNECTOR BETWEEN
ECU AND VEHICLE SPEED SENSOR 2.
1) Turn ignition switch to "OFF" .
2) Disconnect (139) connector from vehicle speed sen-
sor 2.
3) Measure resistance of harness connector between
ECU and vehicle speed sensor 2.
Connector £r Terminal/Specified resistance
(1360) No. 11 - (139) No. 1/00
C2-366
Fig. 87
4. CHECK VOLTAGE OF POWER SUPPLY FOR
VEHICLE SPEED SENSOR 2.
1) Disconnect connector from vehicle speed sensor 2 .
2) Turn ignition switch to "ON" .
3) Measure voltage between (B9) connector terminal
and body .
Connector Er Terminal/Specified resistance
(B9) No . 1 - Body/10 V, min.
5. CHECK VOLTAGE OF POWER SUPPLY FOR
MAIN RELAY.
Measure voltage between main relay connector termi-
nal and body .
Connector £r Terminal/Specified voltage
(1350) No . 3 - Body/10 V, min.
6 . CHECK VEHICLE SPEED SENSOR 2 .
1) Remote vehicle speed sensor 2.
2) connect (139) connector to vehicle speed sensor 2.
3) While rotating shaft of vehicle speed sensor 2, check
voltage that changing from 0 to 5 volts four times per
rotation between (139) connector terminals.
Connector £r Terminal/Specified resistance
(139) No . 1 - No. 3/Of---v . 5 V (4 times/rotation)
ji
C3-089
Fig . 88
83
1360 g g