Subaru Legacy (2005 year). Manual - part 1049

 

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Subaru Legacy (2005 year). Manual - part 1049

 

 

LAN(diag)-75

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

4

CHECK CURRENT DATA.
Connect the Subaru Select Monitor and dis-
play current data of the body integrated unit 
(auto A/C fail).

Is OK displayed?

Go to step 5.

Perform auto A/C 
self-diagnosis. 
<Ref. to AC(diag)-
10, OPERATION, 
Diagnostic Chart 
for Self-Diagno-
sis.>

5

CHECK AUTO A/C ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the auto A/C ECM connector.
3) Turn the ignition switch to ON.

Does B0302 disappear?

Go to step 6.

Go to step 7.

6

CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280) and auto A/C control module 
connector (B283).
2) Check for open and short circuits between 
body integrated unit connector and auto A/C 
control module connector.

Connector & terminal

(B283) No. 1 — (B280) No. 26:
(B283) No. 11— (B280) No. 25:

Is the harness in normal condi-
tion?

Replace the auto 
A/C ECM. <Ref. to 
AC-33, REMOVAL, 
Control Unit (Auto 
A/C Model).>

Repair or replace 
the open or short 
circuit of harness.

7

CHECK CURRENT DATA.
Connect the Subaru Select Monitor and dis-
play current data of the body integrated unit 
(meter fail).

Is OK displayed?

Go to step 8.

Replace the com-
bination meter. 
<Ref. to IDI-15, 
REMOVAL, Com-
bination Meter.>

8

CHECK COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Disconnect the combination meter connec-
tor.
3) Turn the ignition switch to ON.

Is B0302 detected?

Go to step 9.

Replace the com-
bination meter. 
<Ref. to IDI-15, 
REMOVAL, Com-
bination Meter.>

9

CHECK HARNESS.
1) Disconnect the combination meter connec-
tor (i10).
2) Check for open and short circuits between 
the body integrated unit and combination 
meter connectors.

Connector & terminal

(i10) No. 21 — (i84) No. 27:
(i10) No. 22 — (i84) No. 26:

Is the harness in normal condi-
tion?

Go to step 10.

Repair or replace 
the open or short 
circuit of harness.

10

CHECK CURRENT DATA.
Check the current data of the body integrated 
unit (center display fail).

Is OK displayed?

Go to step 11.

Repair or replace 
the center display. 
<Ref. to ET-15, 
REMOVAL, Navi-
gation Display.>

11

CHECK CENTER DISPLAY.
1) Turn the ignition switch to OFF.
2) Disconnect the center display connector 
(i90 or i92).
3) Turn the ignition switch to ON.

Does B0302 disappear?

Go to step 12.

Go to step 13.

Step

Check

Yes

No

LAN(diag)-76

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

12

CHECK HARNESS.
1) Disconnect the body integrated unit con-
nector (B280) and the center display connector 
(i90 or i92).
2) Check for open and short circuits between 
the body integrated unit connector and the 
center display connector.
Connector & terminal

Model with navigation

(i90) No. 6 — (i84) No. 26:
(i90) No. 14 — (i84) No. 27:

Model without navigation

(i92) No. 2 — (i84) No. 26:
(i92) No. 4 — (i84) No. 27:

Is the harness in normal condi-
tion?

Replace the center 
display. <Ref. to 
ET-15, REMOVAL, 
Navigation Dis-
play.>

Repair or replace 
the open or short 
circuit of harness.

13

CHECK COMBINATION METER.
1) Display the current data of body integrated 
unit using Subaru Select Monitor.
2) Display the door switch in analog data.
3) Read the display of data and combination 
meter when each door is opened/closed.

Do the body integrated unit 
data indicator and combina-
tion meter indicator change 
according to operation?

Go to step 14.

Go to step 15.

14

CHECK AUTO A/C CONTROL MODULE 
HARNESS.
1) Disconnect the auto A/C control module 
connector.
2) Disconnect the body integrated unit con-
nector.
3) Measure the resistance between the body 
integrated unit and auto A/C control module 
harness.

Connector & terminal

(B280) No. 26 — (B283) No. 1:
(B280) No. 25 — (B283) No. 11:

Is the resistance less than 
10

Ω?

Go to step 15.

Repair the open 
circuit of harness 
or replace har-
ness.

15

CHECK COMBINATION METER HARNESS.
1) Disconnect the combination meter connec-
tor.
2) Disconnect the body integrated unit con-
nector.
3) Measure the resistance between the body 
integrated unit and combination meter connec-
tor.

Connector & terminal

(i84) No. 27 — (i10) No. 21:
(i84) No. 26 — (i10) No. 22:

Is the resistance less than 
10

Ω?

Go to step 16.

Repair the open 
circuit of harness 
or replace har-
ness.

16

CHECK AUTO A/C CONTROL MODULE.
Perform auto A/C control module self-diagno-
sis. <Ref. to AC(diag)-13, A/C CONTROL 
SYSTEM SELF-DIAGNOSIS, OPERATION, 
Diagnostic Chart for Self-Diagnosis.>

Is the self-diagnosis OK?

Go to step 17.

Replace the auto 
A/C control mod-
ule. <Ref. to AC-
33, REMOVAL, 
Control Unit (Auto 
A/C Model).>

17

CHECK COMBINATION METER.
Perform self-diagnosis for the combination 
meter system. <Ref. to IDI-3, SELF-DIAGNO-
SIS, INSPECTION, Combination Meter Sys-
tem.>

Is the self-diagnosis OK?

Replace the body 
integrated unit. 
<Ref. to SL-44, 
REMOVAL, Body 
Integrated Mod-
ule.>

Replace the com-
bination meter. 
<Ref. to IDI-15, 
REMOVAL, Com-
bination Meter.>

Step

Check

Yes

No

LAN(diag)-77

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

U: DTC B0311 CAN-LS METER UNIT DATA ABNORMAL

DTC DETECTING CONDITION:
Combination meter error, or harness between the main harness splice and combination meter is open or
shorted, the connector is not connected securely and the terminal has poor caulking.
TROUBLE SYMPTOM:
“Er Lc” is displayed in odo/trip meter.
WIRING DIAGRAM:

Step

Check

Yes

No

1

CHECK COMBINATION METER.
Perform the self-diagnosis for combination 
meter. <Ref. to IDI-3, SELF-DIAGNOSIS, 
INSPECTION, Combination Meter System.>

Is the self-diagnosis OK?

Read the DTC 
again, and then 
perform the diag-
nosis according to 
DTC displayed on 
the top.

Replace the com-
bination meter. 
<Ref. to IDI-15, 
Combination 
Meter.>

i77

2

8

7

1

i10

21

22

i84

27

26

LAN00176

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

2 3 4 5

6 7 8 9

12 13 14 15 16 17 18 19 20 21 22

10

1

11

i84

CAN JOINT
CONNECTOR

TWISTED WIRE

i10 

COMBINATION METER

BODY INTEGRATED

MODULE

i77

1 2 3 4 5 6 7 8 9 10 11 12

LAN(diag)-78

LAN SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

V: DTC B0313 CAN-LS MONITOR DATA ABNORMAL

DTC DETECTING CONDITION:
Center display unit error, or harness between the main harness splice and center display unit is open or
shorted, the connector is not connected securely and the terminal has poor caulking.
TROUBLE SYMPTOM:
“Er LC” is displayed in odo/trip meter.
WIRING DIAGRAM:

Step

Check

Yes

No

1

CHECK CENTER DISPLAY.
1) Display the current data of body integrated 
module using Subaru Select Monitor.
2) Read the fail display of center display.

Is the center display fail OK?

Go to step 2.

Replace the center 
display.

2

CHECK NAVIGATION.
1) Display the current data of body integrated 
module using Subaru Select Monitor.
2) Read the display of NAVI fail.

Is the NAVI fail OK?

Replace the center 
display.

Repair the naviga-
tion module.

i77

2

5

8

11

14

6

i90

27

26

i84

LAN00177

i84

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

i90

5 6 7

8

2

1

4

3

11

10

12 13 14 15

8

16

CAN JOINT CONNECTOR

 MODEL WITHOUT

NAVIGATION SYSTEM

BODY 

INTEGRATED

MODULE

CENTER
DISPLAY

TWISTED WIRE

i77

1 2 3 4 5 6 7 8 9 10 11 12

4

2

i103

CENTER
DISPLAY

 MODEL WITH

NAVIGATION SYSTEM

i103

1 2
3 4

 

 

 

 

 

 

 

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