Subaru Legacy (2005 year). Service manual — part 635
5AT(diag)-131
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
18
CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED MODULE AND MANU-
AL MODE SWITCH.
1) Disconnect the steering roll connector.
2) Measure the resistance of harness
between manual mode switch connector and
chassis ground.
Connector & terminal
(B116) No. 9 — Chassis ground:
Is the resistance more than 1
M
Ω?
Repair the short
circuit of harness
between manual
mode switch con-
nector and body
integrated module
connector.
19
CHECK INPUT SIGNAL TO BODY INTE-
GRATED MODULE.
1) Connect all the connectors.
2) Turn the ignition switch to ON. (engine
OFF)
3) Check the signal voltage for body inte-
grated module.
Connector & terminal
(B281) No. 25 (+) — Chassis ground (
−
):
Is the voltage more than 9 V?
Replace the body
integrated mod-
ule. <Ref. to SL-
44, Body Inte-
grated Module.>
20
CHECK INPUT SIGNAL TO BODY INTE-
GRATED MODULE.
1) Shift and hold the select lever to up side.
2) Check the signal voltage for body inte-
grated module.
Connector & terminal
(B281) No. 25 (+) — Chassis ground (
−
):
Is the voltage less than 1 V?
Replace the body
integrated mod-
ule. <Ref. to SL-
44, Body Inte-
grated Module.>
21
CHECK STEERING SHIFT SWITCH
GROUND CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from steering roll
connector.
3) Measure the resistance of harness
between steering roll connector and chassis
ground.
Connector & terminal
(ST4) No. 3 — Chassis ground:
Is the resistance less than 1
Ω?
Repair the open
circuit of harness
between steering
roll connector and
chassis ground.
22
CHECK STEERING SHIFT SWITCH.
Measure the resistance between steering roll
connector terminals.
Connector & terminal
(ST4) No. 3 — No. 4:
Is the resistance more than 1
M
Ω?
Replace the steer-
ing roll connector
or steering shift
switch. Or repair
the poor contact in
connector.
23
CHECK STEERING SHIFT SWITCH.
1) Press and hold the steering shift switch to +
side.
2) Measure the resistance between steering
shift switch terminals.
Connector & terminal
(ST4) No. 3 — No. 4:
Is the resistance less than 1
Ω?
Replace the steer-
ing roll connector
or steering shift
switch. Or repair
the poor contact in
connector.
24
CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED MODULE AND STEER-
ING ROLL CONNECTOR.
1) Disconnect the connector from body inte-
grated module.
2) Measure the resistance of harness
between body integrated module connector
and steering roll connector.
Connector & terminal
(B281) No. 15 — (B68) No. 2:
Is the resistance less than 1
Ω?
Repair the open
circuit of harness
between body inte-
grated module
connector and
steering roll con-
nector, or poor
contact in connec-
tor.
Step
Check
Yes
No
5AT(diag)-132
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
25
CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED MODULE AND STEER-
ING ROLL CONNECTOR.
1) Disconnect the connector from body inte-
grated module.
2) Measure the resistance of harness
between body integrated module connector
and steering roll connector.
Connector & terminal
(B281) No. 25 — (B68) No. 7:
Is the resistance less than 1
Ω?
Repair the open
circuit of harness
between body inte-
grated module
connector and
steering roll con-
nector, or poor
contact in connec-
tor.
26
CHECK POOR CONTACT.
Is there poor contact in manual
mode switch circuit?
Repair the poor
contact.
A temporary poor
contact of manual
mode switch circuit
connector or har-
ness
Step
Check
Yes
No
5AT(diag)-133
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
B: CHECK SPORT INDICATOR LIGHT
DIAGNOSIS:
Output signal circuit of SPORT indicator light is open or shorted.
TROUBLE SYMPTOM:
• SPORT indicator light does not illuminate or remains illuminated.
• SPORT indicator light display does not change.
WIRING DIAGRAM:
AT-03177
3
4
21
1
22
7
i10
i77
2
8
A27
A26
B20
B30
i84
A:
B280
B:
4
3
TCM
B54
i10
i77
i84
B280
B54
2
1
3 4
6 7 8 9 10
22
21
20
19
18
17
16
15
14
13
12
11
5
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
22 23
21
20
19
16
15
14
13
12
11
10
9
34 35
33
32
17
30
18
31
29
28
27
26
25
24
8
7
6
5
4
3
2
1
22
23
21
20
19
16
15
14
13
12
11
10
9
17
30
18
29
28
27
26
25
24
MAIN SBF
SBF-6
No.5
E
COMBINATION
METER
SPORT
INDICATOR
JOINT
CONNECTOR
BODY INTEGRATED
MODULE
IGNITION
SWITCH
B
A
TTER
Y
A:
B:
1 2
7
8
9
5 6
3 4
10 11 12
19 20 21
13
14 15
16
17
18
22
23
24
5AT(diag)-134
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK BODY INTEGRATED MODULE.
Check DTC of body integrated module.
Is DTC of AT CAN communica-
tion circuit displayed?
Perform the diag-
nosis according to
DTC.
2
CHECK TCM.
Check DTC of TCM.
Is DTC of AT CAN communica-
tion circuit displayed?
Perform the diag-
nosis according to
DTC.
3
CHECK TCM.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON. (engine
OFF)
4) Turn the Subaru Select Monitor power
switch to ON.
5) Shift the select lever to manual mode side,
and then shift down the select lever.
6) Read the indicator.
Is gear position 1 and “
▲” dis-
played?
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
4
CHECK TCM.
1) Shift up the select lever.
2) Read the indicator.
Is gear position 2 and “
▼” dis-
played?
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
5
CHECK BODY INTEGRATED MODULE.
Read the data of gear position using Subaru
Select Monitor.
Is SPORT shift gear position
2?
Check the body
integrated mod-
ule. <Ref. to SL-
44, Body Inte-
grated Module.>
6
CHECK COMBINATION METER.
Is the SPORT indicator OK?
Refer to “General
Diagnostic Table”.
<Ref. to 5AT(diag)-
137, General Diag-
nostic Table.>
Replace the com-
bination meter
assembly. <Ref. to
IDI-15, Combina-
tion Meter.>
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