Subaru Legacy 2004 Service Manual page 2535

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. 18 — (B11) No. 18:
(B54) No. 6 — (B11) No. 11:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND BODY HARNESS.
Measure resistance of harness between TCM
connector and body harness.
Connector & terminal
(B54) No. 18 — Chassis ground:
(B54) No. 6 — 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. 18 — (T6) No. 8:
(T4) No. 11 — (T5) 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
(T6) No. 8 — Chassis ground:
(T5) No. 8 — Chassis ground:
5 CHECK INPUT CLUTCH SOLENOID.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T6) 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.
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?
5AT(diag)-76
Yes
Go to step 2. Repair the open
circuit in harness
between TCM and
transmission con-
nector.
Go to step 3. Repair the short
circuit in harness
between TCM and
transmission con-
nector.
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 connector.
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.
No