Subaru Legacy 2004 Service Manual page 2523

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
1 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance of harness
between TCM and transmission connector.
Connector & terminal
(B54) No. 9 — (B11) No. 19:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND CHASSIS GROUND.
Measure the resistance between TCM connec-
tor and chassis ground.
Connector & terminal
(B54) No. 9 — 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.
5) Drain the ATF.
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. 19 — (T6) No. 7:
4 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T6) No. 7 — Chassis ground:
5 CHECK LINE PRESSURE SOLENOID.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T6) No. 7 — 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 verify
that there is no faulty.
Check
Is the resistance less than 1
"?
Is the resistance more than 1
M"?
Is the resistance less than 1
"?
Is the resistance more than 1
M"?
Is the resistance 3 — 9 "?
Is there any loosing terminal,
entering foreign matter, dam-
aging connector body?
Is DTC displayed?
5AT(diag)-64
Yes
Go to step 2. Repair the open
circuit in harness
between TCM con-
nector and trans-
mission connector.
Go to step 3. Repair the short
circuit in harness
between TCM con-
nector and trans-
mission connector.
Go to step 4. Repair the open
circuit in harness
between control
valve body con-
nector and trans-
mission connector.
Go to step 5. Repair the short
circuit in harness
between control
valve body con-
nector and trans-
mission ground.
Go to step 6. Replace the con-
trol valve body.
<Ref. to 5AT-58,
Control Valve
Body.>
Repair the poor Go to step 7.
contact.
Replace the TCM. Temporary poor
<Ref. to 5AT-61, contact or open
Transmission Con- circuit occurs.
trol Module Recheck that the
(TCM).> harness connec-
tor has no faulty.
No