Subaru LEGACY 2006 Manual page 3542

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
6 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Lift up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain ATF until it cools down.
6) Remove the oil pan, and disconnect the
connector from control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(B11) No. 7 — (T5) No. 15:
(B11) No. 1 — (T5) No. 14:
7 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T15) No. 15 — Transmission ground:
(T15) No. 14 — Transmission ground:
8 CHECK HARNESS CONNECTOR BETWEEN
CONTROL VALVE BODY AND VEHICLE
SPEED SENSOR.
1) Disconnect the connector from vehicle
speed sensor.
2) Measure the resistance of harness
between control valve body connector and
vehicle speed sensor connector.
Connector & terminal
(T15) No. 15 — (T7) No. 3:
(T15) No. 14 — (T7) No. 2:
(T7) No. 1 — Transmission ground:
9 CHECK HARNESS CONNECTOR BETWEEN
CONTROL VALVE BODY AND VEHICLE
SPEED SENSOR.
Measure the resistance of harness between
control valve body connector and transmission
ground.
Connector & terminal
(T15) No. 15 — Transmission ground:
(T15) No. 14 — Transmission ground:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
5AT(diag)-49
Yes No
Go to step 7. Repair the open
circuit of harness
between control
valve body con-
nector and trans-
mission connector.
Go to step 8.
Repair the short
circuit of harness
between transmis-
sion connector
and transmission
ground.
Go to step 9. Replace the con-
trol valve body.
<Ref. to 5AT-53,
Control Valve
Body.>
Replace the vehi- Replace the con-
cle speed sensor. trol valve body.
<Ref. to 5AT-53,
Control Valve
Body.>