Transmission Control Module (Tcm) I/O Signal - Subaru 2003 LEGACY Service Manual

TRANSMISSION CONTROL MODULE (TCM) I/O SIGNAL

AUTOMATIC TRANSMISSION (DIAGNOSTICS)
5. Transmission Control Module (TCM) I/O Signal
A: ELECTRICAL SPECIFICATION
9
18
24
Content
Back-up power supply
Ignition power supply
"P" range switch
"N" range switch
"R" range switch
Inhibitor
"D" range switch
switch
"3" range switch
"2" range switch
"1" range switch
Brake switch
VDC communication signal
+
VDC communication signal
–
to B54
8 7 6 5 4 3 2 1
17 16 15 14 13 12 11 10
22
23 21 20 19
9
18
24
Check with ignition switch ON.
Connector Terminal
No. No.
B56 1
B54 23
B54 24
B55 1
B55 14
B55 3
B55 4
B55 5
B55 6
B55 7
B55 12
B56 9
B56 18
9
18
24
to B56
8 7 6 5 4 3 2 1
17 16 15 14 13 12 11 10
22
23 21 20 19
Measuring conditions
Ignition switch OFF
Ignition switch ON (with engine OFF)
Select lever in "P" range
Select lever in any other than "P"
range (except "N" range)
Select lever in "N" range
Select lever in any other than "N"
range (except "P" range)
Select lever in "R" range
Select lever in any other than "R"
range
Select lever in "D" range
Select lever in any other than "D"
range
Select lever in "3" range
Select lever in any other than "3"
range
Select lever in "2" range
Select lever in any other than "2"
range
Select lever in "1" range
Select lever in any other than "1"
range
Brake pedal depressed.
Brake pedal released.
Ignition ON
AT-14
to B55
8 7 6 5 4 3 2 1
17 16 15 14 13 12 11 10
23 22 21 20 19
Voltage (V)
10 — 13
10 — 13
Less than 1
More than 8
Less than 1
More than 8
Less than 1
More than 8
Less than 1
More than 8
Less than 1
More than 8
Less than 1
More than 8
Less than 1
More than 8
More than 10.5
Less than 1
(+) — (–)
Pulse signal
(+) — (–)
Pulse signal
AT-00642
Resistance to
body (ohms)
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