Subaru Legacy IV (2008 year). Service manual — part 1177
LAN(diag)-42
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 31).
Is the fuse blown out?
Replace the fuse
(No. 31). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
31) and body inte-
grated unit.
Go to step 2.
2
CONTINUITY CHECK OF WIRING HAR-
NESS.
1) Disconnect the connector (i84) from body
integrated unit.
2) Turn the ignition switch to ON.
3) Measure the voltage between body inte-
grated unit connector and chassis ground.
Connector & terminal
(i84) No. 24 (+) — Chassis ground (–):
Is the voltage 9 — 15 V?
Go to step 3.
Repair the harness
for open or shorted
circuit between
body integrated
unit and fuse.
3
CHECK POOR CONTACT IN CONNECTOR.
Is there poor contact in body
integrated unit connector?
Repair the poor
contact of connec-
tor.
Go to step 4.
4
CHECK BODY INTEGRATED UNIT HAR-
NESS.
1) Connect all connectors.
2) Perform the Clear Memory Mode.
3) Read DTC.
Is DTC displayed?
Replace the body
integrated unit.
<Ref. to SL-56,
Body Integrated
Unit.>
Temporary poor
contact occurs.
LAN(diag)-43
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
F: DTC B1105 KEY INTERLOCK CIRCUIT ABNORMAL
DTC DETECTING CONDITION:
Key interlock circuit is shorted to ground.
TROUBLE SYMPTOM:
• There is no key interlock power supply.
• Key interlock does not release or does not keep lock condition.
WIRING DIAGRAM:
LAN00169
B5
FB-28
F/B FUSE
NO.31 (ACC)
FB-37
F/B FUSE
NO.12 (IG)
MB-28
M/B FUSE
NO.14 (B)
E
3
4
2
1
A24
C7
C1
A1
i84
A:
B280
B:
B281
C:
B350
B350
B280
B:
B350
1 2 3 4
B281
C:
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
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
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
TO POWER SUPPLY CIRCUIT
KEY WARNING SWITCH
BODY INTEGRATED UNIT
KEY LOCK
SOLENOID
LAN(diag)-44
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK KEY LOCK SOLENOID.
1) Disconnect the connector of key lock sole-
noid.
2) Measure the internal resistance of key lock
solenoid.
Connector & terminal
(B350) No. 1 — No. 2:
Is the resistance between 10 —
20
:?
Go to step 2.
Replace the key
lock solenoid.
2
CHECK GROUND CIRCUIT.
1) Disconnect the connector of key lock sole-
noid.
2) Measure the resistance between the key
lock solenoid connector and chassis ground.
Connector & terminal
(B350) No. 1 — Chassis ground:
Is the resistance less than 10
:? Go to step 3.
Check the key lock
solenoid ground
circuit for short cir-
cuit and confirm
the correct installa-
tion. Repair the
ground circuit if
defective.
3
CHECK HARNESS.
1) Disconnect the body integrated unit connec-
tor (B280) and key lock solenoid connector
(B350).
2) Measure the resistance between body inte-
grated unit connector and chassis ground.
Connector & terminal
(B280) No. 5 — Chassis ground:
Is the resistance 1 M
: or
more?
Replace the body
integrated unit.
<Ref. to SL-56,
Body Integrated
Unit.>
Repair the short
circuit of harness
or replace har-
ness.
LAN(diag)-45
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
G: DTC B1106 SHIFT LOCK CIRCUIT FAILURE
DTC DETECTING CONDITION:
Shift lock circuit is shorted to ground.
TROUBLE SYMPTOM:
Shift lock does not be released or remain locked.
WIRING DIAGRAM:
B6
TO POWER SUPPLY CIRCUIT
FB-28
F/B FUSE
NO.31 (ACC)
FB-37
F/B FUSE
NO.12 (IG)
MB-28
M/B FUSE
NO.34 (B)
FB-3
F/B FUSE
NO.8 (B)
E
F9
F5
3
4
A24
C23
C1
A1
i84
A:
B280
B:
B281
C:
B159
F:
BODY INTEGRATED
UNIT
B116
SHIFT LOCK
SOLENOID
JOINT FUSE
BOX
STOP LIGHT
SWITCH
3
2
B65
LAN00195
1 2
3 4
11
6 7 8 9 10
B116
1 2
3 4
9
5 6
7
8
B159
F:
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
C:
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
B:
3
4
1
2
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
A:
i84
B65
5
12
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