Subaru Legacy IV (2008 year). Manual - part 700

4AT(diag)-21

Inspection Mode

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

8. Inspection Mode

A: PROCEDURE

WARNING:
Observe the traffic law during driving on roads.
1) Shift the select lever to “D” range, and then drive
the vehicle at 60 km/h (37 MPH) for at least 10 sec-
onds.
2) Drive the vehicle with manual mode.

4AT(diag)-22

Clear Memory Mode

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

9. Clear Memory Mode

A: OPERATION

Refer to “Subaru Select Monitor” for information
about how to clear a DTC.
<Ref. to 4AT(diag)-18, CLEAR MEMORY MODE,
OPERATION, Subaru Select Monitor.>

4AT(diag)-23

AT OIL TEMP Warning Light Display

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

10.AT OIL TEMP Warning Light Display

A: OPERATION

When any on-board diagnostics item is malfunctioning, the ATF temperature warning light blinks when a mal-
function is detected after starting the engine until the ignition switch is turned OFF. The malfunctioning part
or unit can be determined by a DTC during the on-board diagnostics operation. Problems which occurred
previously can also be identified through the memory function. If the ATF temperature warning light does not
show a problem (although a problem is occurring), the problem can be determined by checking the perfor-
mance characteristics of each sensor using the Subaru Select Monitor. Warning light signal patterns are
shown in the figure.

Perform the inspection when the ATF temperature warning light does not operate correctly. <Ref. to 4AT(di-
ag)-24, INSPECTION, AT OIL TEMP Warning Light Display.>

(A)

Ignition switch ON (engine OFF)

(B)

Normal (engine ON)

(C)

Faulty (engine ON)

 

 

 

 

 

 

(1)

ON

(3)

2 seconds

(5)

Blink

(2)

OFF

(4)

0.25 seconds

 

 

AT-02980

(4)

(3)

(1)

(2)

(1)

(2)

(1)

(2)

(3)

(5)

(A)

(B)

(C)

4AT(diag)-24

AT OIL TEMP Warning Light Display

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

B: INSPECTION

DIAGNOSIS:
ATF temperature warning light circuit is open or shorted.
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), the ATF temperature warning light does not illumi-
nate.
WIRING DIAGRAM:

AT-04907

MAIN  SBF

SBF-6

No.

 5

E

18

17

B54

TCM

3

21

22

i10

i84

A:

B280

B:

A26

A27

B20

B30

B365

1

*

2

*

1

*

2

*

WN

WN

ON

i107

i106

*

*

*

*

ON

WN

WN

ON

ON

B54

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

33 34

29

32

30

31

35

i10

i84

B280

2

1

3 4

6 7 8 9 10

22

21

20

19

18

17

16

15

14

13

12

11

5

8

7

6

5

4

3

2

1

22 23

21

20

19

16

15

14

13

12

11

10

9

34 35

33

32

17
30

18
31

29

28

27

26

25

24

8

7

6

5

4

3

2

1

22

23

21

20

19

16

15

14

13

12

11

10

9

17

30

18

29

28

27

26

25

24

A:

B:

i107

i106

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

1 2 3 4

B365

1

*

2

*

*

WN

ON

: WITH NAVIGATION

: WITHOUT NAVIGATION

: TERMINAL No. OPTIONAL ARRANGEMENT
  AMONG 1, 2, 3, 11, 12 AND 13

: TERMINAL No. OPTIONAL ARRANGEMENT

: TERMINAL No. OPTIONAL ARRANGEMENT
  AMONG 8, 9, 10, 18, 19 AND 20

CAN
JOINT
CONNECTOR

BODY INTEGRATED UNIT

COMBINATION
METER

IGNITION

SWITCH

CAN TRANSCEIVER  &  RECEIVER

MICRO COMPUTER

B

A

TTER

Y

CAN

JOINT

CONNECTOR

CAN
JOINT
CONNECTOR

ATF

TEMPERATURE

WARNING 

LIGHT