Non-Turbo Model - Subaru 2003 LEGACY Service Manual

TRANSMISSION CONTROL MODULE (TCM) I/O SIGNAL
Content
Kick-down switch
AT OIL TEMP warning light
Throttle position sensor
Throttle position sensor
power supply
ATF temperature sensor
Rear vehicle speed sensor
Front vehicle speed sensor
Torque converter turbine
speed sensor
Vehicle speed output sig-
nal
Engine speed signal
Cruise set signal
Torque control signal 1
Torque control signal 2
Torque control cut signal
Intake manifold pressure
signal

(Non-TURBO model)

Shift solenoid 1
Mass air flow signal
(TURBO model)
Shift solenoid 2
Line pressure duty sole-
noid
Lock-up duty solenoid
Transfer duty solenoid
(Without VDC system and
SPORT shift)
Check with ignition switch ON.
Connector Terminal
No. No.
B55 11
B56 10
B54 3
B54 2
B54 11
B55 24
B55 18
B55 8
B56 17
B55 17
B55 22
B56 5
B56 14
B55 10
B54 1
B54 22
B54 1
B54 5
B54 9
B54 7
B54 6
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Measuring conditions
Throttle fully opened.
Throttle fully closed.
Light ON
Light OFF
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 stopped.
Vehicle speed at least 20 km/h (12
MPH)
Vehicle stopped.
Vehicle speed at least 20 km/h (12
MPH)
Engine idling after warm-up.
(D range)
Engine idling after warm-up.
(N range)
Vehicle speed at most 10 km/h (6
MPH)
Ignition switch ON (with engine OFF)
Ignition switch ON (with engine ON)
When cruise control is set (SET lamp
ON)
When cruise control is not set (SET
lamp OFF)
Ignition switch ON (with engine ON)
Ignition switch ON (with engine ON)
Ignition switch ON
Engine idling after warm-up.
1st or 4th gear
2nd or 3rd gear
Idling condition after warm-up
1st or 2nd gear
3rd or 4th gear
Ignition switch ON (with engine OFF)
Throttle fully closed after warm-up.
Ignition switch ON (with engine OFF)
Throttle fully open after warm-up.
When lock up occurs.
When lock up is released.
Fuse on FWD switch
Fuse removed from FWD switch
(with throttle fully open and with
select lever in 1st gear).
AT-15
Resistance to
Voltage (V)
body (ohms)
Less than 1
—
More than 6.5
Less than 1
—
More than 9
0.2 — 1.0
—
4.2 — 4.7
4.8 — 5.3 —
1.6 — 2.0 2.1 k — 2.9 k
0.4 — 0.9 275 — 375
0
450 — 650
More than 1
(AC range)
0
450 — 650
More than 1
(AC range)
0
450 — 650
More than 1
(AC range)
Less than 1←
—
→More than 4
0
—
8 — 11
Less than 1
—
More than 6.5
More than 4 —
More than 4 —
8 —
0.4 — 1.6 —
More than 9
10 — 16
Less than 1
0.9 — 1.4 —
More than 9
10 — 16
Less than 1
1.5 — 4.0
2.0 — 4.5
Less than 0.5
More than 8.5
10 — 17
Less than 0.5
More than 8.5
10 — 17
Less than 0.5