Subaru Legacy (2005 year). Service manual - part 544
4AT(diag)-13
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Transmission Control Module (TCM) I/O Signal
5. Transmission Control Module (TCM) I/O Signal
A: ELECTRICAL SPECIFICATION
Check with ignition switch ON.
Item
Connector
No.
Terminal
No.
Measuring conditions
Voltage (V)
Resistance to
chassis ground
(
Ω)
Back-up power supply
B55
27
Ignition switch OFF
10 — 13
—
28
29
ACC power supply
B55
16
Ignition switch ACC
10 — 13
—
Ignition power supply
B55
21
Ignition switch ON (with
engine OFF)
10 — 13
—
31
Inhibitor
switch
“P” range
switch
B54
5
Selector lever in “P” range
Less than 1
—
Select lever in any other
than “P” range (except “N”
range)
8 or more
“N” range
switch
B54
22
Selector lever in “N” range
Less than 1
—
Selector lever in any other
than “N” range
8 or more
“R” range
switch
B54
14
Selector lever in “R” range
Less than 1
—
Selector lever in any other
than “R” range
8 or more
“D” range
switch
B54
4
Selector lever in “D” range
Less than 1
—
Selector lever in any other
than “D” range
8 or more
Accelerator pedal position
sensor
B54
19
Throttle fully closed.
0.2 or more
—
Throttle fully open.
4.6 or less
Accelerator pedal position
sensor power supply
B54
10
Ignition switch ON (with
engine OFF)
Approx. 4.6 — 5.4
—
ATF temperature sensor
B54
21
ATF temperature 20
°C
(68
°F)
3.5 — 4.3
2.3 k — 5.3 k
ATF temperature 80
°C
(176
°F)
1.0 — 2.2
300 — 800
Rear vehicle speed sensor
B54
24
Vehicle speed at least 20
km/h (12 MPH)
2 or more (AC range)
—
AT-01476
B54
B55
1
2
7
8
9
5
6
3
4
10
11
12
19
20
21
13
14
15
16
17
18
22
23
24
1
2
7
8
9
5
6
3
4
10
11
12
19
20
21
29
30
31
13
14
15
16
17
27
28
18
22
23
24
25
26
To
To