Subaru Legacy 2004 Service Manual page 2471

Transmission Control Module (TCM) I/O Signal
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
5. Transmission Control Module (TCM) I/O Signal
A: ELECTRICAL SPECIFICATION
NOTE:
The measurement should perform after warming up.
Item
P/L solenoid output
PVIGN power supply
I/C oil pressure switch
input
Power GND
CAN communication line
(+)
CAN communication line
($)
ATF temperature sensor
1 input
B54
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24
Ter-
Connector min
Measuring conditions
No. al
No.
Engine ON, "P" range,
Accelerator OFF, Brake
ON
B54 9
Manual mode 1st, Accel-
erator OFF, Brake ON
8 Ignition switch ON
B54
7 Ignition switch ON
B54 6
B54 5 Always
B54 4
B54 3
B54 2 Ignition switch ON
5AT(diag)-12
B55
1 2 3 4 5 6
10 11 12 13 14 15
19 20 21
Voltage (V)
Approx. 4.0 —
6.0 V
Approx. 2.0 —
4.0 V
Power supply
voltage
Power supply
voltage
— —
Approx. 0 V
— —
— —
2.5 — 2.9 V
(ATF tempera-
ture 20#C
(68#F))
0.8 — 1.0 V
(ATF tempera-
ture 80#C
(176#F))
7 8 9
16 17 18
22 23 24
Measure the
resistance
between termi- Remarks
nal and chassis
ground.
3 — 9 " (ATF
Driving fre-
temperature quency 750 —
20#C (68#F)) 850 Hz
—
—
The condition
of I/C oil pres-
— sure switch
cannot read by
the tester.
—
—
—
4.0 — 5.0 k"
(ATF tempera-
ture 20#C
(68#F))
0.7 — 0.9 k"
(ATF tempera-
ture 80#C
(176#F))
AT-01451