Subaru Legacy IV (2008 year). Service 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
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