Subaru LEGACY 2006 Manual page 3506

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Diagnostic Procedure for Subaru Select Monitor Communication
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
17 CHECK FUSE (NO. 12).
Remove the fuse (No. 12).
18 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. 8 — (B11) No. 19:
(B54) No. 17 — (B11) No. 19:
(B55) No. 2 — (B11) No. 20:
(B55) No. 3 — (B11) No. 20:
19 CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND TRANSMISSION
GROUND.
Measure the resistance of the harness
between transmission and transmission
ground.
Connector & terminal
(T4) No. 19 — Transmission ground:
(T4) No. 20 — Transmission ground:
20 CHECK POOR CONTACT OF CONNEC-
TORS.
Check
Is the fuse (No. 12) blown out? Replace the fuse
Is the resistance less than 1
Ω?
Is the resistance less than 1
Ω?
Is there poor contact in TCM
power supply, ground and data
link connector?
4AT(diag)-26
Yes No
Repair the open
(No. 12). If the circuit of harness
replaced fuse (No. between fuse (No.
12) has blown out 12) and TCM, or
easily, repair the fuse (No. 12) and
short circuit of har- battery, and poor
ness between fuse contact of the con-
(No. 12) and TCM. nector.
Go to step 19.
Repair the open
circuit of harness
between TCM and
transmission har-
ness connector,
and poor contact
of connector.
Go to step 20.
Repair the open
circuit of the har-
ness between
transmission and
transmission
ground.
Repair the con- Replace the TCM.
nector. <Ref. to 4AT-62,
Transmission Con-
trol Module
(TCM).>