Subaru Legacy 2005 Service Manual page 2492

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
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) Jack-up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain the ATF until it cools down.
6) Remove the oil pan, and disconnect the
control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T4) No. 15 — (T11) No. 12:
(T4) No. 4 — (T10) No. 12:
7 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) Jack-up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain the ATF until it cools down.
6) Remove the oil pan, and disconnect the
control valve body connector.
7) Measure the resistance between transmis-
sion ground and control valve body connector.
Connector & terminal
(T4) No. 15 — Transmission ground:
(T4) No. 4 — Transmission ground:
Check
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
5AT(diag)-74
Yes
Replace the trans- Repair the open
mission assembly. circuit of harness
<Ref. to 5AT-38, between control
Automatic Trans- valve body con-
mission Assem- nector and trans-
bly.> mission connector.
Replace the con- Repair the short
trol valve body. circuit of harness
<Ref. to 5AT-58, between control
Control Valve valve body con-
Body.> nector and trans-
mission connector.
No