Subaru Legacy (2005 year). Service manual - part 1033

LAN(diag)-11

LAN SYSTEM (DIAGNOSTICS)

Control Module I/O Signal

Rear wiper switch (INT)

B281

C18

Less than 1 

Ω

Rear wiper switch ON

Rear washer switch

B281

C27

Less than 1 

Ω

Rear washer switch ON

Rear wiper power sup-
ply

B280

B21

10 — 13 V

Rear wiper ON output

B280

B1

10 — 13 V

Rear wiper switch ON

Rear wiper return

B280

B8

Less than 1 

Ω

B1 — B8 less than 1 

Ω

At wiper reversing

Room light output

B280

B3

Less than 1 

Ω

When LOCK, UNLOCK with key-

less entry

Key ring illumination 
output

B280

B4

Less than 1 

Ω

Ignition key removed, driver’s 

door open

Turn hazard output

B280

B12

Less than 1 

Ω

When operating keyless entry 

answer back

Immobilizer pilot light

i84

A33

Less than 1 

Ω

At ignition key removed, immobi-

lizer operating

Alarm control ECM (EK 
model)

B280

B11

Serial communication

Security horn output 
(Except for EK model)

B280

B11

Less than 1 

Ω

At security horn output

Keyless communication

i84

A9

2 — 10 V

At keyless entry signal received

High-speed CAN circuit 
(Hi)

B280

B20

Between B20 — B30

Serial communication

At communicating (sending and 

receiving)

High-speed CAN circuit 
(Lo)

B280

B30

Low-speed CAN circuit 
1 (Hi)

i84

A26

Between A25 — A26

Serial communication

At communicating (sending and 

receiving)

Low-speed CAN circuit 
1 (Lo)

i84

A25

Low-speed CAN circuit 
2 (Hi)

B280

B26

Between B25 — B27

Serial communication

At communicating (sending and 

receiving)

(Model with auto A/C)

Low-speed CAN circuit 
2 (Lo)

B280

B27

Immobilizer antenna

B281

C20 — C21

Serial communication

Immobilizer communi-
cation (Main)

B280

B18

(Back-up 

B28)

Serial communication

Subaru Select Monitor 
communication

B280

B19

Serial communication

Description

Connector 

No.

Terminal No.

Signal (V or 

Ω)

NOTE

Ignition switch ON

(engine OFF)

LAN(diag)-12

LAN SYSTEM (DIAGNOSTICS)

Control Module I/O Signal

B: WIRING DIAGRAM 

BODY

INTEGRATED

MODULE

SYSTEM CONTROL POWER SUPPLY

IGNITION POWER SUPPLY

BACKUP POWER SUPPLY

GROUND

ACC POWER SUPPLY

GROUND

GROUND

GROUND

B7

A24

B22

A1

A25

A10

C23

A2

C7

C9

C2

A21

C8

KEY WARNING  SWITCH

STOP LIGHT SWITCH

ILLUMINATION

VOLUME

FRONT FOG LIGHT INPUT

REAR FOG LIGHT INPUT

HEADLIGHT INPUT

DRIVER'S SEAT

PASSENGER'S SEAT

REAR SEAT (RIGHT SIDE)

REAR SEAT (LEFT SIDE)

TRUNK / REAR GATE

ILLUMINATION CONTROL SWITCH (CLOCK)

MANUAL SWITCH (LOCK)

MANUAL SWITCH (UNLOCK)

REAR WIPER SWITCH (ON)

REAR WIPER SWITCH (INT)

REAR WASHER  SWITCH

WIPER DEICER SWITCH

SHIFT SWITCH (ON) 

SHIFT SWITCH (UP) 

SHIFT SWITCH (DOWN) 

FUEL LEVEL SENSOR

AMBIENT SENSOR (SIG)

AMBIENT SENSOR (GND)

SEDAN / WAGON IDENTIFICATION SWITCH 

REGISTRATION MODE SWITCH 
(EXCEPT FOR EK MODEL)

KEYLESS COMMUNICATION

HIGH-SPEED CAN CIRCUIT (HI)

HIGH-SPEED CAN CIRCUIT (LO)

LOW-SPEED CAN CIRCUIT 1 (HI)

LOW-SPEED CAN CIRCUIT 2 (HI)

LOW-SPEED CAN CIRCUIT 1 (LO)

LOW-SPEED CAN CIRCUIT 2 (LO)

IMMOBILIZER ANTENNA

IMMOBILIZER COMMUNICATION (MAIN)

IMMOBILIZER COMMUNICATION (BACKUP) 

SUBARU SELECT MONITOR 
COMMUNICATION

REAR DEFOGGER RELAY OUTPUT

DOOR LOCK POWER SUPPLY

ALL DOORS LOCK OUTPUT 

TRUNK / REAR GATE UNLOCK OUTPUT

ALL DOORS UNLOCK OUTPUT

KEY / SHIFT LOCK POWER SUPPLY

SHIFT LOCK OUTPUT

REAR WIPER POWER SUPPLY

REAR WIPER ON OUTPUT

REAR WIPER  RETURN

REAR DEFOGGER SWITCH

(MODEL WITH MANUAL A/C)

WIPER DEICER RELAY OUTPUT

ILLUMINATION OUTPUT

ROOM LIGHT OUTPUT

KEY RING ILLUMINATION OUTPUT

A5

C4

C17

A17

A31

A18

A32

A19

C16

B13

REAR FOG LIGHT OUTPUT

TURN HAZARD OUTPUT

B4

B3

B11

C22

B19

C28

A33

C18

C6

B28

B27

C21

C20

B18

B8

B21

B1

B12

IMMOBILIZER PILOT LIGHT

ALARM CONTROL ECM (EK MODEL)

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

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

A:

B:

C:

B281

B280

i84

A:

B:

C:

LAN00180

HEATER COCK VALVE OUTPUT

DRIVER'S SEAT DOOR LOCK 

(EXCEPT FOR EK MODEL) 

DOUBLE LOCK OUTPUT (EK MODEL)  

B14

A34

A7

B6

C1

A15

A30

A22

A29

A28

A14

B16

A8

A16

B15

A23

A35

"P" RANGE SWITCH

SEAT BELT SWITCH (DRIVER'S SEAT)

SEAT BELT SWITCH (PASSENGER'S SEAT)

SEAT BELT WARNING LIGHT
(DRIVER'S SEAT)

SEAT BELT WARNING LIGHT 
(PASSENGER'S SEAT)

C25

C26

C15

C19

C3

C10

C13

A4

A13

C22

B20

A25

C11

B30

A9

A26

B26

A20

B27

DOOR LOCK SWITCH

DOOR

SWITCH

INPUT

SECURITY HORN OUTPUT
(EXCEPT FOR EK MODEL)

B11

IMPACT SENSOR

C5

LAN(diag)-13

LAN SYSTEM (DIAGNOSTICS)

Control Module I/O Signal

C: LAN SYSTEM

(1)

Body integrated module

(8)

Audio-A/C control panel

(15)

Subaru Select Monitor communi-
cation line

(2)

ECM

(9)

Navigation system

(3)

TCM

(10)

Center display

(16)

Subaru Select Monitor

(4)

VDC/ABSCM

(11)

Combination meter

(17)

Low speed CAN (Body control)

(5)

Steering angle sensor

(12)

Clock

(18)

High speed CAN (Driving control)

(6)

Keyless entry receiver

(13)

Exclusive communication line

(7)

A/C control module

(14)

IE-Bus (AV)

LAN00109

(1)

(6)

(7)

(8)

(14)

(17)

(11)

(12)

(13)

(18)

(13)

(13)

(9)

(13)

(10)

(13)

(2)

(3)

(15)

(4)

(5)

(16)

LAN(diag)-14

LAN SYSTEM (DIAGNOSTICS)

Subaru Select Monitor

6. Subaru Select Monitor

A: OPERATION

1. READ DIAGNOSTIC TROUBLE CODE 
(DTC)

NOTE:
• DTC is displayed in the sequence of inputting.
(When inputting two DTCs or more simultaneously,
they are displayed in the sequence of priority.)
• When two DTCs or more are displayed, perform
the diagnosis of top of them.
1) Prepare the Subaru Select Monitor kit.

2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to Subaru Select Monitor.
<Ref. to LAN(diag)-6, SPECIAL TOOL, PREPARA-
TION TOOL, General Description.>

4) Connect the Subaru Select Monitor to data link
connector.
Data link connector is located in the lower portion of
instrument panel (on the driver's side).

CAUTION:
Do not connect the scan tools except Subaru 
Select Monitor.
5) Turn the ignition switch to ON (engine OFF), and
turn the Subaru Select Monitor power switch to ON.

6) On the “Main Menu” display screen, select the
{Each System Check} and press the [YES] key.
7) On the “System Selection Menu” display screen,
select the {Integ. unit mode} and press the [YES]
key.
8) On the “Integ. unit mode failure diag” display
screen, select the {Diagnostic Code(s) Display}
and press the [YES] key.

NOTE:
• For details concerning operation procedure, re-
fer to the SUBARU SELECT MONITOR OPERA-
TION MANUAL.
• For details concerning DTCs, refer to the List of
Diagnostic Trouble Code (DTC). <Ref. to LAN(di-
ag)-28, List of Diagnostic Trouble Code (DTC).>

LAN00014

EN-00039

LAN00110

(A) Power switch

LAN00017

(A)