Subaru Legacy 2005 Service Manual page 2185

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