Subaru Legacy IV (2008 year). Manual - part 653

 

  Index      Subaru     Subaru Legacy IV - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

  

 

Content   ..  651  652  653  654   ..

 

 

Subaru Legacy IV (2008 year). Manual - part 653

 

 

CS-19

AT Shift Lock Control System

CONTROL SYSTEMS

8

CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND “P” RANGE SWITCH.
1) Disconnect the connector from body inte-
grated unit.
2) Disconnect the connector of “P” range 
switch.
3) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between 
the body integrated unit and “P” range switch.

Connector & terminal

(B281) No. 13 — (B116) No. 1:

Is the harness normal?

Go to step 9.

Repair or replace 
the harness 
between the body 
integrated unit and 
the “P” range 
switch.

9

CHECK HARNESS BETWEEN “P” RANGE 
SWITCH AND CHASSIS GROUND.
Measure the resistance of harness between “P” 
range switch and chassis ground.

Connector & terminal

(B116) No. 2 — Chassis ground:

Is it less than 10 

:?

Go to step 10.

Repair the harness 
between the “P” 
range switch and 
chassis ground.

10

CHECK “P” RANGE SWITCH.
Measure the resistance between “P” range 
switch connector terminals.

Terminals

No. 2 — No. 1:

Is it less than 10 

: in the “P” 

range, and 1 M

: or more in 

ranges other than “P”?

Replace the body 
integrated unit.

Replace the “P” 
range switch.

11

CHECK STOP LIGHT SWITCH INPUT SIG-
NAL.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the voltage between the body inte-
grated unit connector terminal and chassis 
ground.

Connector & terminal

(B281) No. 23 (+) — Chassis ground (–):

Is the voltage 9 V or more when 
the brake pedal is depressed, 
and less than approximately 
1.5 V when not pressed?

Replace the body 
integrated unit.

Check the stop 
light system.

12

CHECK SHIFT LOCK SOLENOID OPERA-
TION.
Connect the battery to the shift lock solenoid 
unit connector terminal, and operate the sole-
noid.

Terminals

No. 3 (+) — No. 4 (–):

Does the shift lock solenoid 
operate normally?

Check the lock 
mechanism of the 
select lever body.

Replace the shift 
lock solenoid.

Step

Check

Yes

No

CS-20

AT Shift Lock Control System

CONTROL SYSTEMS

4. KEY INTERLOCK CANNOT BE LOCKED OR RELEASED

E

E

B281

C:

B280

B:

C7

B5

1

2

C13

B116

1

2

B350

B350

3

4

1 2 3 4

B350

B116

1 2

3 4

5 6 7 8 9 10

5 6 7

8

2

1

9

4

3

10

24

22 23

25

11 12 13 14 15

26

27 28

16 17 18 19

20 21

B281

5

4

6 7

8

2

1

9

3

10

22

23

11 12 13 14 15

24 25

26 27

16 17 18

28 29

19 20

21

30

B280

C:

B:

SBF-8

No.

 7

C2

A3

E

2

2

B76

7

B75

B38

i3

i84

A:

B75

1
2

B76

1
2

B38

1 2 3 4

5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20

i84

A:

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

24 25

26 27 28 29

30 31 32 33

34 35

C1

No.

 14

CS-00981

B

A

TTER

Y

BODY INTEGRATED UNIT

P RANGE SWITCH

KEY WARNING SWITCH

DELIVERY (TEST)

MODE CONNECTOR

KEY LOCK
SOLENOID

CS-21

AT Shift Lock Control System

CONTROL SYSTEMS

Step

Check

Yes

No

1

CHECK DELIVERY (TEST) MODE CONNEC-
TOR.
Check that the delivery (test) mode connector is 
disconnected.

Is the delivery (test) mode con-
nector disconnected?

Go to step 2.

Disconnect the 
delivery (test) 
mode connector.

2

CHECK BODY INTEGRATED UNIT POWER 
SUPPLY AND GROUND CIRCUIT.
<Ref. to CS-15, BODY INTEGRATED UNIT 
POWER SUPPLY AND GROUND CIRCUIT, 
INSPECTION, AT Shift Lock Control System.>

Is there an abnormal condition? Follow the proce-

dures to inspect 
and repair.

Go to step 3.

3

CHECK CURRENT DATA.
1) Connect the Subaru Select Monitor.
2) Shift the select lever to the “P” range.
3) Turn the ignition switch to ON.
4) Display the current data display and display 
“P SW”. <Ref. to LAN(diag)-12, OPERATION, 
Subaru Select Monitor.>

Is the display “ON” in the P 
range and “OFF” in ranges 
other than P?

Go to step 4.

Go to step 7.

4

CHECK CURRENT DATA.
1) Select the current data display and display 
the “Key-lock warning SW”. <Ref. to LAN(diag)-
12, OPERATION, Subaru Select Monitor.>
2) Turn the ignition switch to OFF.

Does the display change from 
“ON” to “OFF” when the key is 
inserted and removed?

Go to step 5.

Go to step 10.

5

CHECK CURRENT DATA.
1) Turn the ignition switch to ON.
2) Select the current data display and display 
“Key locking output”. <Ref. to LAN(diag)-12, 
OPERATION, Subaru Select Monitor.>

Is the display “ON” in the P 
range and “OFF” in ranges 
other than P?

Go to step 12.

Go to step 6.

6

CHECK DTC OF BODY INTEGRATED UNIT.
1) Set the select lever to a range other than the 
“P” range.
2) Check DTC of body integrated unit.

Is B1105 (key interlock circuit 
malfunction) a current malfunc-
tion?

Follow the DTC to 
perform inspection 
and repair.

Go to step 11.

7

CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND “P” RANGE SWITCH.
1) Disconnect the connector from body inte-
grated unit.
2) Disconnect the connector of “P” range 
switch.
3) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between 
the body integrated unit and “P” range switch.

Connector & terminal

(B281) No. 13 — (B116) No. 1:

Is the harness normal?

Go to step 8.

Repair or replace 
the harness 
between the body 
integrated unit and 
the “P” range 
switch.

8

CHECK HARNESS BETWEEN “P” RANGE 
SWITCH AND CHASSIS GROUND.
Measure the resistance of harness between “P” 
range switch and chassis ground.

Connector & terminal

(B116) No. 2 — Chassis ground:

Is it less than 10 

:?

Go to step 9.

Repair the harness 
between the “P” 
range switch and 
chassis ground.

9

CHECK “P” RANGE SWITCH.
Measure the resistance between “P” range 
switch connector terminals.

Terminals

No. 2 — No. 1:

Is it less than 10 

: in the “P” 

range, and 1 M

: or more in 

ranges other than “P”?

Replace the body 
integrated unit.

Replace the “P” 
range switch.

CS-22

AT Shift Lock Control System

CONTROL SYSTEMS

10

CHECK HARNESS BETWEEN BATTERY 
AND KEY WARNING SWITCH AND BODY IN-
TEGRATED UNIT.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the voltage between body inte-
grated unit and chassis ground.

Connector & terminal

(B281) No. 7 — Chassis ground:

Is the display 9 V or more when 
the key is inserted, and less 
than 1.5 V with the key 
removed?

Replace the body 
integrated unit.

Check the follow-
ing items.
• Key  warning 
switch
• Harness/fuse
• Ignition circuit

11

CHECK DELIVERY (TEST) MODE CONNEC-
TOR HARNESS.
1) Disconnect the connector of body inte-
grated unit.
2) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between 
the body integrated unit connector and delivery 
(test) mode connector.

Connector & terminal

(i84) No. 3 — (i3) No. 7: 

Is the harness normal?

Go to step 12.

Repair or replace 
the harness 
between the body 
integrated unit and 
delivery (test) 
mode connector.

12

CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND KEY LOCK SOLENOID.
1) Disconnect the connector from body inte-
grated unit.
2) Disconnect the connector from the key lock 
solenoid.
3) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between 
the body integrated unit and key lock solenoid.

Connector & terminal

(B280) No. 5 — (B350) No. 2:

Is the harness normal?

Go to step 13.

Repair or replace 
the harness 
between the body 
integrated unit and 
the key lock sole-
noid.

13

CHECK HARNESS BETWEEN KEY LOCK 
SOLENOID AND CHASSIS GROUND.
Measure the resistance of harness between 
key lock solenoid and chassis ground.

Connector & terminal

(B350) No. 1 — Chassis ground:

Is it less than 10 

:?

Go to step 14.

Repair or replace 
the harness 
between the key 
lock solenoid and 
chassis ground.

14

CHECK KEY LOCK SOLENOID OPERATION.
Connect the battery to the key lock solenoid 
connector terminal, and operate the solenoid.

Does the key lock solenoid 
operate normally?

Go to step 15.

Replace the key 
lock solenoid.

15

CHECK OUTPUT OF BODY INTEGRATED 
UNIT.
1) Connect all connectors.
2) Insert the key.
3) Measure the voltage between body inte-
grated unit and chassis ground.

Connector & terminal

(B280) No. 5 — Chassis ground:

Is it 5 V or more in ranges other 
than “P”, and less than 1.5 V in 
the “P” range?

Check the lock 
mechanism of the 
steering lock body.

Replace the body 
integrated unit.

Step

Check

Yes

No

 

 

 

 

 

 

 

Content   ..  651  652  653  654   ..