Page 2238 of 2453

5AT(diag)-121
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK UP/DOWN SWITCH.
1) Move the select lever to manual mode.
2) Shift and hold the select lever to up side.
3) Read the “Up Switch” data of TCM using
Subaru Select Monitor.
OPERATION, Subaru Select Monitor.>
Is ON displayed? Go to step 2.Go to step 3.
2CHECK UP/DOWN SWITCH.
1) Move the select lever to manual mode.
2) Shift and hold the select lever to down side.
3) Read the “Down Switch” data of TCM using
Subaru Select Monitor.
OPERATION, Subaru Select Monitor.>
Is ON displayed? Go to the proce-
dure for “CHECK
RANGE POSI-
TION/GEAR
POSITION INDI-
CATOR LIGHT”.
124, CHECK
RANGE POSI-
TION/GEAR
POSITION INDI-
CATOR LIGHT,
Diagnostic Proce-
dure without Diag-
nostic Trouble
Code (DTC).>
Go to step 12.
3CHECK THE BODY INTEGRATED UNIT.
1) Turn the ignition switch to ON.
2) Shift and hold the select lever to up side.
3) Read the “TIP UP SW” data of body inte-
grated unit using Subaru Select Monitor.
Is ON displayed? Go to step 4.Go to step 5.
4CHECK THE BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
Is DTC of CAN communication
displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Check the TCM.
5CHECK UP/DOWN SWITCH GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the up/down
switch.
3) Measure the resistance of harness
between the up/down switch connector and
chassis ground.
Connector & terminal
(B116) No. 11— Chassis ground:
Is the resistance less than 1
Ω?
Go to step 6.Repair the open
circuit of harness
between the up/
down switch con-
nector and chassis
ground.
6CHECK UP/DOWN SWITCH.
Measure the up/down switch resistance.
Connector & terminal
(B116) No. 10 — No. 11:
Is the resistance more than 1
MΩ?
Go to step 7.Replace the guide
plate assembly.
7CHECK UP/DOWN SWITCH.
1) Shift and hold the select lever to up side.
2) Measure the up/down switch resistance.
Connector & terminal
(B116) No. 10 — No. 11:
Is the resistance less than 1
Ω?
Go to step 8.Replace the guide
plate assembly.
8CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED UNIT AND UP/DOWN
SWITCH.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the resistance of the harness
between body integrated unit and up/down
switch connector.
Connector & terminal
(B116) No. 10 — (B281) No. 25:
(B116) No. 9 — (B281) No. 15:
Is the resistance less than 1
Ω?
Go to step 9.Repair the open
circuit of harness
between the up/
down switch con-
nector and body
integrated unit
connector, or poor
contact of connec-
tor.
Page 2241 of 2453
5AT(diag)-124
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
B: CHECK RANGE POSITION/GEAR POSITION INDICATOR LIGHT
DIAGNOSIS:
Output signal circuit of the range position/gear position indicator light is open or shorted.
TROUBLE SYMPTOM:
•Range position/gear position indicator light does not illuminate or remains illuminated.
•Cannot understand range position/gear position indicator light display.
WIRING DIAGRAM:
AT-03290
34
2930
COMBINATIONMETER
i10
A27A26
B20B30
BODY INTEGRATED UNIT
i84A:
B280B:
43
TCMB54
BATTERY
MAIN SBF SBF-6 NO.5
E
IGNITIONSWITCH
i84
8765432122232120191615141312111093435333217301831292827262524
A:
B54
12789563410 11 1219 20 2113 14 15 16 17 18222324
B280
87654321
2223212019161514131211109173018292827262524
B:
i10
123456789101112131415161718192021222324252627282930
RANGE POSITION/GEAR POSITIONINDICATOR
Page 2242 of 2453

5AT(diag)-125
Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step Check Yes No
1CHECK THE BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
Is DTC of AT CAN communica-
tion circuit displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 2.
2CHECK TCM.
Check DTC of TCM.
Is DTC of AT CAN communica-
tion circuit displayed?
Pe r for m t h e d ia g -
nosis according to
DTC.
Go to step 3.
3CHECK 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 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?
Go to step 4.Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
4CHECK TCM.
1) Shift up the select lever.
2) Read the indicator.
Is the gear position 2, and is
“” displayed?
Go to step 5.Replace the TCM.
Tr a n s m i s s i o n C o n -
trol Module
(TCM).>
5CHECK THE BODY INTEGRATED UNIT.
Read the data of gear position using Subaru
Select Monitor.
Is SPORT shift gear position
2?
Go to step 6.Check the body
integrated unit.
Body Integrated
Unit.>
6CHECK COMBINATION METER.Is the range position/gear posi-
tion indicator light normal?
Refer to “Symptom
Related Diagnos-
tic”.
5AT(diag)-128,
General Diagnos-
tic Table.>
Replace the com-
bination meter
assembly.
IDI-11, Combina-
tion Meter.>
Page 2257 of 2453
CS-5
AT Shift Lock Control System
CONTROL SYSTEMS
2. AT Shift Lock Control System
A: LOCATION
(1) TCM (“P” range) (4) Key cylinder (with built-in key
warning switch)
(6) “P” range switch
(2) Body integrated unit (7) Key lock solenoid
(3) Stop light switch (5) Shift lock solenoid ASSY
CS-00595
(4)
(6)
(5)
(7)(1)
(2)
(3)
Page 2259 of 2453

CS-7
AT Shift Lock Control System
CONTROL SYSTEMS
B: ELECTRICAL SPECIFICATION
ItemTo c o n n e c t o r
No.Te r m i n a l N o .Input/Output signal
Measured value and measuring condition
Battery power supplyB2811
9 — 16 V2
B280 7
Ignition power supply i84 1 10 — 15 V when ignition switch is at ON or START.
ACC power supply i84 24 10 — 15 V when ignition switch is at ACC.
TCM (“P” range)B280 20Pulse signalB280 30
Stop light switch B281 239 — 16 V when stop light switch is ON.
0 V when stop light switch is OFF.
“P” range switch B281 130 V when select lever is in “P” range.
9 — 16 V when select lever is in other positions than “P” range.
Shift lock solenoid signal B280 68.5 — 16 V when shift lock is released.
0 V when shift lock is operating.
Key war ning switch signal B281 79 — 16 V when key is inserted.
0 V when key is removed.
Key lock solenoid signal B280 5
7.5 — 16 V when ignition switch is turned ON, with select lever
in “P” range and brake switch ON.
0 V at other conditions than above.
Ground
B280 22
—i84 21
B2818
9
CS-00273
71928
61827
51741626152514241312231122
3102921
1820
B281side
72030
619291828
51741627152614132512241123
3102922
1821
B280side
82335
722342162033
51932183117301615291428
41327
312261121025
1924
i84side
Page 2260 of 2453
CS-8
AT Shift Lock Control System
CONTROL SYSTEMS
C: WIRING DIAGRAM
(1) Ignition switch (4) Body integrated unit (7) Shift lock solenoid
(2) Stop light switch (5) TCM (“P” range) (8) “P” range switch
(3) Key warning switch (6) Key lock solenoid (9) Battery
CS-00363
OFFACCON
(1)
(2)
(3)
(4)
(9)
(6)
(7)
(8)
(5)
Page 2264 of 2453
CS-12
AT Shift Lock Control System
CONTROL SYSTEMS
3. SELECT LEVER CANNOT BE SHIFTED
CS-00600
B281C:
i84A:
MAIN SBF
SBF-2
NO.8
E
B281C:
i84A:
C23
B6B159
59
B116
4
3
32
B65
BATTERY
STOP LIGHT SWITCH
BODY INTEGRATED UNITJOINT FUSE BOX
SHIFT LOCK SOLENOID
B116
1234
B65
567821943102422 23 25111213141526 27281617181920 21
1234567891011121314151617181920212223242526272829303132333435
123456789
B159
C1
NO.14
1234567891011125467821931022 231112131415242526 2716171828 29192021 30
B280B:
B280B:
Page 2265 of 2453

CS-13
AT Shift Lock Control System
CONTROL SYSTEMS
Step Check Yes No
1CHECK INPUT SIGNAL OF BODY INTE-
GRATED UNIT USING SUBARU SELECT
MONITOR.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch and Subaru Select
Monitor to ON.
4) Depress the brake pedal.
5) Read the input signal of stop light switch
from Subaru Select Monitor.
Select Monitor.>
Is “ON” displayed? Go to step 2.Go to step 3.
2CHECK DTC OF BODY INTEGRATED UNIT.
Check DTC of the body integrated unit.
Diagnostic Trouble Code (DTC).>
Is DTC (B0106) displayed? Repair or replace it
according to the
DTC.
Go to step 6.
3CHECK STOP LIGHT SWITCH.
Depress the brake pedal.
Does the stop light illuminate? Go to step 4.Check the stop
light system.
4CHECK HARNESS BETWEEN STOP LIGHT
SWITCH AND BODY INTEGRATED UNIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors of body inte-
grated unit and stop light switch.
3) Measure the resistance of harness
between stop light switch and body integrated
unit.
Connector & terminal
(B65) No. 3 — (B281) No. 23:
Is the resistance more than 1
MΩ?
Repair the open
circuit of harness
between the body
integrated unit and
stop light switch.
Go to step 5.
5CHECK HARNESS BETWEEN STOP LIGHT
SWITCH AND BODY INTEGRATED UNIT.
Measure the resistance of harness between
stop light switch and chassis ground.
Connector & terminal
(B65) No. 3 — Chassis ground:
Is the resistance less than 1
Ω?
Repair the short
circuit of harness
between the body
integrated unit and
stop light switch.
Go to step 7.
6CHECK SHIFT LOCK SOLENOID.
1) Disconnect the connector of shift lock sole-
noid.
2) Connect the battery to connector terminal
of shift lock solenoid, and operate the solenoid.
Te r m i n a l s
No. 3 (+) — No. 4 (–):
Is the shift lock solenoid oper-
ating properly?
Go to step 7.Replace the shift
lock solenoid.
7CHECK SHIFT LOCK OPERATION.
1) Connect all the connectors.
2) Shift the select lever to “P” range.
3) Shift the select lever from “P” range to “R”
range.
Can the select lever shift from
“P” range to “R” range?
Check the body
integrated unit.
A temporary poor
contact of connec-
tor or harness may
be the cause.