Subaru Legacy 2004 Service Manual page 2473

Transmission Control Module (TCM) I/O Signal
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Item
Control GND
H&LR/C oil pressure
switch input
Front vehicle speed sen-
sor input
Lateral G sensor power
supply
Lateral G sensor signal
input
Inhibitor switch 1 input
Inhibitor switch 2 input
Accessory power supply
Ignition power supply
Rear vehicle speed sen-
sor input
Fr/B oil pressure switch
input
Turbine speed sensor 1
input
Ter-
Connector min
Measuring conditions
No. al
No.
B54 19 Always
While driving at 2nd of
manual mode
B55 8
While driving at 3rd — 5th
of manual mode
While driving at 2nd and
20 km/h (12 MPH) of man-
ual mode
B55 7
While driving at 4th and 80
km/h (50 MPH) of manual
mode
B55 6 Ignition switch ON
Ignition switch ON, Engine
B55 5
ON, Flat value
Ignition switch ON, "P"
range
B55 4
Ignition switch ON, "N"
range
Ignition switch ON, "P"
range
B55 3
Ignition switch ON, "D"
range
Accessory switch ON
B55 2
Accessory switch OFF
Ignition switch ON
B55 1
Ignition switch OFF
While driving at 2nd and
20 km/h (12 MPH) of man-
ual mode
B55 18
While driving at 4th and 80
km/h (50 MPH) of manual
mode
Ignition switch ON, Engine
ON, While driving at other
than 4th
B55 17
Ignition switch ON, Engine
ON, While driving at 4th
2nd of manual mode, Tur-
bine speed sensor is
2,000 rpm (Read from
Subaru Select Monitor)
B55 16
4th of manual mode, Tur-
bine speed sensor is
2,000 rpm (Read from
Subaru Select Monitor)
5AT(diag)-14
Measure the
resistance
Voltage (V) between termi-
nal and chassis
ground.
Approx. 0 V —
Power supply
voltage
—
Approx. 0 V
Approx. 140 —
170 Hz
—
Approx. 560 —
680 Hz
4.75 — 5.25 V —
2.0 — 3.0 V —
4.0 — 5.0 V
—
1.5 V or less
4.0 — 5.0 V
—
1.5 V or less
Power supply
voltage
—
Approx. 0 V
Power supply
voltage
—
Approx. 0 V
Approx. 190 —
230 Hz
—
Approx. 760 —
920 Hz
Approx. 0 V
—
Power supply
voltage
Approx. 0 Hz
—
Approx. 1,900
— 2,100 Hz
Remarks
Use an oscillo-
scope.
Use an oscillo-
scope.