AUTOMATIC TRANSMISSION (DIAGNOSTICS)(4AT) > Transmission Control Module (TCM) I/O Signal
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Check with ignition switch ON. | ||||||
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Contents |
Measured terminal (Connector & Terminal No.) |
Measuring condition |
Voltage (V) |
Resistance (Ω) | ||
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Positive terminal |
Ground terminal | |||||
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Backup power supply |
(B54) No. 25 |
Chassis ground |
Ignition switch (engine OFF) |
10 — 13 |
— | |
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(B54) No. 26 | ||||||
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(B54) No. 27 | ||||||
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Ignition power supply |
(B54) No. 1 |
Chassis ground |
Ignition switch ON |
10 — 13 |
— | |
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(B54) No. 2 | ||||||
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Inhibitor switch |
“P” Range Switch |
(B55) No. 14 |
Chassis ground |
Select lever in “P” range |
Less than 1 |
— |
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Select lever in a range other than “P”. |
8 or more | |||||
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“R” range switch |
(B55) No. 13 |
Chassis ground |
Select lever in the “R” range |
Less than 1 |
— | |
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Select lever a range other than “R”. |
8 or more | |||||
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“N” range switch |
(B55) No. 11 |
Chassis ground |
Select lever in the “N” range |
Less than 1 |
— | |
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Select lever in a range other than “N”. |
8 or more | |||||
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“D” range switch |
(B55) No. 10 |
Chassis ground |
Select lever in the “D” range |
Less than 1 |
— | |
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Select lever in a range other than “D”. |
8 or more | |||||
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ATF temperature sensor |
(B55) No. 23 |
(B55) No. 12 |
ATF temperature 20°C (68°F) |
3.5 — 4.3 |
2.5 k — 7 k | |
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ATF temperature 80°C (176°F) |
1.0 — 2.2 |
300 — 800 | ||||
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ATF temperature sensor ground |
(B55) No. 12 |
Chassis ground |
— |
0 |
Less than 1 | |
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Rear vehicle speed sensor |
(B55) No. 26 |
(B55) No. 15 |
Vehicle stopped |
0 |
— | |
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Vehicle speed at least 20 km/h (12 MPH) |
2 or more (AC range) | |||||
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Rear vehicle speed sensor ground |
(B55) No. 15 |
Chassis ground |
— |
0 |
Less than 1 | |
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Front vehicle speed sensor |
(B55) No. 27 |
(B55) No. 16 |
Vehicle stopped |
0 |
450 — 650 | |
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Vehicle speed at least 20 km/h (12 MPH) |
1 or more (AC range) | |||||
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Front vehicle speed sensor ground |
(B55) No. 16 |
Chassis ground |
— |
— |
— | |
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Torque converter turbine speed sensor |
(B55) No. 1 |
(B55) No. 2 |
Engine idling after warm up (“D” range) |
0 |
450 — 650 | |
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Engine idling after warm up (“N” range) |
1 or more (AC range) | |||||
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Torque converter turbine speed sensor ground |
(B55) No. 2 |
Chassis ground |
— |
— |
— | |
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Line pressure linear solenoid |
(B55) No. 4 |
(B55) No. 3 |
Ignition switch ON “R” range throttle fully closed after engine warm up. |
3.7 — 7.7 |
4.0 — 6.0 | |
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Ignition switch ON “R” range throttle fully open after engine warm up. |
1.1 — 5.1 | |||||
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Line pressure linear solenoid ground |
(B55) No. 3 |
Chassis ground |
— |
Less than 1 |
Less than 1 | |
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Lock-up duty solenoid |
(B55) No. 6 |
Chassis ground |
When lock up occurs. |
10.5 or more |
2.0 — 4.5 | |
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When lock up is released. |
Less than 1 | |||||
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Transfer duty solenoid |
(B55) No. 5 |
Chassis ground |
With fuse installed to FWD switch |
Less than 1 |
2.0 — 4.5 | |
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With fuse removed from FWD switch (1st gear) |
2.0 — 3.0 | |||||
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2-4 brake duty solenoid |
(B54) No. 4 |
Chassis ground |
“P” or “N” range |
5.0 or more |
2.0 — 4.5 | |
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2nd or 4th gear |
Less than 1 | |||||
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High clutch duty solenoid |
(B54) No. 6 |
Chassis ground |
3rd or 4th gear |
Less than 1 |
2.0 — 4.5 | |
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“P” or “N” range |
5.0 or more | |||||
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Low clutch duty solenoid |
(B54) No. 7 |
Chassis ground |
1st or 2nd gear |
Less than 1 |
2.0 — 4.5 | |
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“P” or “N” range |
5.0 or more | |||||
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Low & reverse duty solenoid |
(B54) No. 5 |
Chassis ground |
Except “1” range |
5.0 or more |
2.0 — 4.5 | |
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1st Range Signal |
2.5 — 5.0 | |||||
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FWD switch |
(B54) No. 10 |
Chassis ground |
Fuse removed |
10.5 or more |
— | |
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Fuse installed |
Less than 1 | |||||
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CAN communication signal (+) |
(B55) No. 18 |
Chassis ground |
Ignition switch ON |
Pulse signal |
— | |
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CAN communication signal (−) |
(B55) No. 17 |
Chassis ground |
Pulse signal | |||
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System ground |
(B54) No. 20 |
Chassis ground |
— |
0 |
Less than 1 | |
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(B54) No. 21 |
Chassis ground | |||||
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(B54) No. 22 |
Chassis ground | |||||
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(B54) No. 23 |
Chassis ground | |||||
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Data link signal (Subaru Select Monitor) |
(B54) No. 8 |
Chassis ground |
— |
— |
— | |
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SPORT shift switch |
(B54) No. 17 |
Chassis ground |
Ignition switch ON When SPORT shift mode switch is ON |
Less than 1 |
— | |
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Ignition switch ON When SPORT shift mode switch is OFF |
8 or more |
— | ||||
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SPORT shift DOWN switch |
(B54) No. 18 |
Chassis ground |
Ignition switch ON When SPORT shift up switch is ON |
Less than 1 |
— | |
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Ignition switch ON When SPORT shift mode switch is OFF |
8 or more |
— | ||||
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SPORT shift UP switch |
(B54) No. 19 |
Chassis ground |
Ignition switch ON When SPORT shift down switch is ON |
Less than 1 |
— | |
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Ignition switch ON When SPORT shift mode switch is OFF |
8 or more |
— | ||||