CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Transmission Control Module (TCM) I/O Signal
ELECTRICAL SPECIFICATION

NOTE:
Measure after warming up.
Item | Terminal No. | Measuring condition | Measurement value | Resistance between terminal and chassis ground | Remarks |
Backup power supply | 34 | — | 10 — 13 V | — | |
Ignition power supply | 41 | — | 10 — 13 V | — | |
Main power supply | 8 | — | 10 — 13 V | — | |
Main power supply | 24 | — | 10 — 13 V | — | |
Main power supply | 40 | — | 10 — 13 V | — | |
Manual mode switch/L range switch | 20 | Manual mode switch/L range switch ON | Less than 1 V | — | |
Manual mode switch/L range switch OFF | 8 V or more | — | |||
Manual mode UP switch | 19 | Manual mode UP switch ON | Less than 1 V | — | |
Manual mode UP switch OFF | 8 V or more | — | |||
Manual mode DOWN switch | 18 | Manual mode DOWN switch ON | Less than 1 V | — | |
Manual mode DOWN switch OFF | 8 V or more | — | |||
Stop light switch | 29 | Stop light switch ON | 8 V or more | — | |
Stop light switch OFF | Less than 1 V | — | |||
P range switch | 38 | P range | Less than 1 V | — | |
Except for P range | 8 V or more | — | |||
R range switch | 37 | R range | Less than 1 V | — | |
Except for R range | 8 V or more | — | |||
N range switch | 36 | N range | Less than 1 V | — | |
Except for N range | 8 V or more | — | |||
D range switch | 35 | D range | Less than 1 V | — | |
Except for D range | 8 V or more | — | |||
ATF temperature sensor | 6 | ATF temperature at 20°C (68°F) | Approx. 2.5 V | Approx. 2.5 k? | |
ATF temperature at 80°C (176°F) | Approx. 0.7 V | Approx. 330 ? | |||
ATF temperature sensor GND | 1 | Always | Approx. 0 V | — | |
Secondary pressure sensor power supply output | 33 | Ignition switch ON | 5 V | — | |
Secondary pressure sensor | 5 | Ignition switch ON, engine OFF | Approx. 0.5 V (0 MPa) | — | Value increases with increase of engine load. (0.5 — 4.5 V) |
Ignition switch ON, engine ON | Approx. 1.0 V (1.0 MPa) | — | |||
Secondary pressure sensor GND | 2 | Always | Approx. 0 V | — | |
Primary speed sensor | 14 | While driving | 0 or 5 V | — | Refer to the waveform (sensor) |
Secondary speed sensor | 13 | While driving | 0 or 5 V | — | Refer to the waveform (sensor) |
Turbine speed sensor | 12 | Engine ON, “P” or “N” range | 0 or 5 V | — | Refer to the waveform (sensor) |
Self shut output | 25 | For three seconds after ignition switch ON and OFF | Less than 1 V | — | |
Ignition switch OFF | 8 V or more | ||||
F&R solenoid | 16 | Engine ON | Refer to the waveform (solenoid (1)) | Approx. 4 — 6 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
Secondary solenoid | 32 | Engine ON | Refer to the waveform (solenoid (2)) | Approx. 5 — 7 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
Primary UP solenoid | 47 | Engine ON, while UP shifting | Refer to the waveform (solenoid (3)) | Approx. 10 — 13.5 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
Primary DOWN solenoid | 30 | Engine ON, while DOWN shifting | Refer to the waveform (solenoid (4)) | Approx. 10 — 13.5 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
Lock-up duty solenoid | 15 | Lock-up ON | Refer to the waveform (solenoid (5)) | Approx. 10 — 13.5 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
AWD solenoid | 48 | Engine ON, “P” or “N” range | Refer to the waveform (solenoid (6)) | Approx. 2 — 4.5 ? | Resistance value at 20°C (68°F). Value is higher as the temperature increase. |
Engine ON, “D” range, brake ON | Refer to the waveform (solenoid (7)) | ||||
CAN communication line (+) | 43 | — | — | — | |
CAN communication line (−) | 44 | — | — | — | |
GND | 26 | Always | Approx. 0 V | — | |
GND | 42 | Always | Approx. 0 V | — |
WaveformVehicle Dynamics Control system
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Even when driving a Subaru Ascent equipped with the Vehicle Dynamics Control
system, always remain attentive and cautious. Relying too heavily on electronic
assistance systems can lead to dangerous situations and potentially serious accidents.
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Installation
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Fuel filler lid and cap
Locations of the fuel filler lid
Refueling
When refueling the Subaru Ascent, it is strongly recommended that the process
be handled by a single person to maintain safety and control. Keep other individuals
away from the fuel filler area while refueling is in progress.
Always follow all sa ...