Subaru Legacy 2005 Service Manual page 2544

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
1 CHECK BODY INTEGRATED MODULE.
1) Connect the Subaru Select Monitor to data
link connector.
2) Turn the ignition switch to ON. (engine
OFF)
3) Read the DTC of body integrated module
using Subaru Select Monitor. <Ref. to
LAN(diag)-14, OPERATION, Subaru Select
Monitor.>
2 CHECK BODY INTEGRATED MODULE IN-
PUT SIGNAL.
1) Shift the select lever to "P" range.
2) Read the TIP mode SW data of body inte-
grated module using Subaru Select Monitor.
<Ref. to LAN(diag)-14, OPERATION, Subaru
Select Monitor.>
3 CHECK BODY INTEGRATED MODULE IN-
PUT SIGNAL.
1) Shift the select lever from "P" to "D" range.
2) Read the TIP mode SW data of body inte-
grated module using Subaru Select Monitor.
<Ref. to LAN(diag)-14, OPERATION, Subaru
Select Monitor.>
4 CHECK BODY INTEGRATED MODULE IN-
PUT SIGNAL.
1) Shift the select lever to manual mode.
2) Shift the select lever to other than "D"
range.
3) Read the TIP mode SW data of body inte-
grated module using Subaru Select Monitor.
<Ref. to LAN(diag)-14, OPERATION, Subaru
Select Monitor.>
5 CHECK DTC OF TCM.
6 CHECK TCM INPUT SIGNAL.
1) Shift the select lever from "P" to "D" range.
2) Read the TIP mode SW data of TCM using
Subaru Select Monitor. <Ref. to 5AT(diag)-17,
OPERATION, Subaru Select Monitor.>
7 CHECK HARNESS BETWEEN BODY INTE-
GRATED MODULE AND SWITCH FOR
SPORT MODE AND MANUAL MODE.
1) Turn the ignition switch to OFF.
2) Disconnect harness connector from body
integrated module and select lever.
3) Measure the harness resistance between
body integrated module and chassis ground.
Connector & terminal
(B281) No. 26 — Chassis ground:
Check
Is DTC displayed?
Is OFF displayed?
Is the indication on each range
OFF?
Is OFF displayed?
Is DTC of Transmission Range
Sensor Circuit (PRNDL Input)
and AT CAN communication
circuit displayed?
Is the indication on each range
OFF?
Is the resistance more than 1
MΩ?
5AT(diag)-126
Yes
Perform the diag- Go to step 2.
nosis according to
DTC.
Go to step 3. Go to step 7.
Go to step 4. Replace the select
lever assembly.
<Ref. to CS-22,
Select Lever.>
Go to step 5. Replace the select
lever assembly.
<Ref. to CS-22,
Select Lever.>
Perform the diag- Go to step 6.
nosis according to
each DTC.
Even if the SPORT Replace the TCM.
indicator lights <Ref. to 5AT-61,
blinks, the system Transmission Con-
is in normal condi- trol Module
tion. A temporary (TCM).>
poor contact of
connector or har-
ness may be the
cause.
Go to step 8. Repair the short
circuit of harness
between body inte-
grated module and
switch for SPORT
mode and manual
mode.
No