Subaru Legacy 2005 Service Manual page 4194

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
1 CHECK HARNESS.
1) Disconnect the TCM connector.
2) Measure the resistance between TCM con-
nector terminals.
Connector & terminal
4AT model
(B54) No. 3 — No. 12:
5AT model
(B54) No. 3 — No. 4:
2 CHECK TCM.
Read the DTC of TCM using Subaru Select
Monitor. <Ref. to 4AT(diag)-16, READ DIAG-
NOSTIC TROUBLE CODE (DTC), OPERA-
TION, Subaru Select Monitor.> <Ref. to
5AT(diag)-17, READ DIAGNOSTIC TROUBLE
CODE (DTC), OPERATION, Subaru Select
Monitor.>
Check
Is the resistance ∞ Ω?
Is DTC other than "CAN com-
munication" displayed on Sub-
aru Select Monitor?
LAN(diag)-64
Yes
Open harness in Go to step 2.
related lines of
TCM. Repair or
replace the open
circuit of harness.
Perform the diag- Replace the TCM.
nosis according to <Ref. to 4AT-66,
DTC. Transmission Con-
trol Module
(TCM).> <Ref. to
5AT-61, Transmis-
sion Control Mod-
ule (TCM).>
No