Subaru LEGACY 2006 Manual page 3562

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND BODY HARNESS.
Measure the resistance of harness between
TCM connector and body harness.
Connector & terminal
(B54) No. 18 — Chassis ground:
3 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
control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T4) No. 18 — (T16) No. 8:
4 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
Measure the resistance between chassis
ground and control valve body connector.
Connector & terminal
(T16) No. 8 — Chassis ground:
5 CHECK INPUT CLUTCH SOLENOID.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T16) No. 8 — Transmission ground:
6 CHECK POOR CONTACT.
Check that there are no poor contact in TCM
connector, transmission connector and control
valve body connector.
7 CHECK AFTER REPAIR.
1) Perform the Clear Memory Mode.
2) Drive for a while, read the DTC, and check
that there is no faulty.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance between 3 —
9 Ω?
Is there any loosing terminal,
entering foreign matter, dam-
aging connector body?
Is DTC displayed?
5AT(diag)-69
Yes No
Go to step 3. Repair the short
circuit of harness
between TCM and
transmission con-
nector.
Go to step 4. Repair the open
circuit of harness
between transmis-
sion connector
and control valve
body connector.
Go to step 5. Repair the short
circuit of harness
between transmis-
sion connector
and control valve
body connector.
Go to step 6. Replace the con-
trol valve body.
<Ref. to 5AT-53,
Control Valve
Body.>
Repair the poor Go to step 7.
contact.
Replace the TCM. Temporary poor
<Ref. to 5AT-56, contact or open
Transmission Con- circuit occurs.
trol Module Recheck that the
(TCM).> harness connec-
tor has no faulty.