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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSSUBARU2014LEGACY 2.5I, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 10 (BODY CONTROL SYSTEM (DIAGNOSTICS))CONTROL MODULE I/O SIGNALELECTRICAL SPECIFICATION
2014 Subaru Legacy 2.5i, Automatic CVT Trans
Electrical Specification
2014 Subaru Legacy 2.5i, Automatic CVT TransSECTION Electrical Specification
WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
| DESCRIPTION | Terminal No. | Signal (V or Ξ©) | Note | ||
|---|---|---|---|---|---|
| Ignition switch ON (engine OFF) | |||||
| Ignition power supply (rear wiper) | A5 ββ Chassis ground | Less than 1.5 V β 10 - 13 V | Ignition switch OFF β ON | ||
| Battery power supply (shift lock/key lock) | B6 ββ Chassis ground | 10 - 13 V | Always | ||
| Battery power supply (door lock) | D1 ββ Chassis ground | 10 - 13 V | Always | ||
| Battery power supply (control) | C6 ββ Chassis ground | 10 - 13 V | Always | ||
| Ground | A1 ββ Chassis ground | Less than 1.5 V | Always | ||
| B31 ββ Chassis ground | |||||
| C1 ββ Chassis ground | |||||
| D29 ββ Chassis ground | |||||
| Battery power supply (back-up) | B7 ββ Chassis ground | 10 - 13 V | Always | ||
| Ignition power supply | B3 ββ Chassis ground | Less than 1.5 V β 10 - 13 V | Ignition switch OFF β ON | ||
| ACC power supply | A32 ββ Chassis ground | Less than 1.5 V β 10 - 13 V | Ignition switch OFF β Accessory ON | ||
| Key-in switch | A4 ββ Chassis ground | Less than 1.5 V β 10 - 13 V | Key inserted | ||
| P range SW | B18 ββ Chassis ground | Less than 1.5 V β 8 V or more | P range to other than P range | ||
| Stop light SW | A10 ββ Chassis ground | Less than 1.5 V β 8 V | Stop light switch OFF β ON | ||
| Door SW (driver's) | C14 ββ Chassis ground | 8 V or more β less than 1.5 V | Front right door closed β open | ||
| Door SW (passenger's) | C13 ββ Chassis ground | 8 V or more β less than 1.5 V | Front left door closed β open | ||
| Door SW (rear right) | C25 ββ Chassis ground | 8 V or more β less than 1.5 V | Rear right door closed β open | ||
| Door SW (rear left) | C24 ββ Chassis ground | 8 V or more β less than 1.5 V | Rear left door closed β open | ||
| Rear gate SW/trunk SW | C33 ββ Chassis ground | 8 V or more β less than 1.5 V | Rear gate/trunk closed β open | ||
| Opener SW (trunk/rear gate) | C10 ββ Chassis ground | 8 V or more β less than 1.5 V | Rear gate/trunk opener switch ON | ||
| Manual switch (LOCK) | C9 ββ Chassis ground | 8 V or more β less than 1.5 V | Door lock switch ON | ||
| Manual switch (UNLOCK) | C20 ββ Chassis ground | 8 V or more β less than 1.5 V | Door unlock switch ON | ||
| Lighting AUTO | B16 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at AUTO position | ||
| Lighting II | A34 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at II position | ||
| B34 ββ Chassis ground | |||||
| Lighting I | B17 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at I position | ||
| Dimmer passing | B25 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at passing position | ||
| Dimmer Hi beam | B15 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at Hi beam position | ||
| Front fog light SW | B26 ββ Chassis ground | 8 V or more β less than 1.5 V | Front fog light switch ON | ||
| Illumination sensor power supply | B1 ββ A29 | Less than 1.5 V β 4.5 V or more | Ignition switch OFF β ON | ||
| Illumination sensor signal | A19 | 0.2 - 4.5 V | Ignition switch OFF β ON | ||
| Ground (illumination sensor) | A29 ββ Chassis ground | Less than 1.5 V | Always | ||
| Rear wiper SW ON | A12 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at ON position | ||
| Rear wiper SW INT | A22 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at INT position | ||
| Rear washer SW | A30 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at ON position | ||
| Illumination SW (Vi1) | D12 ββ Chassis ground | Approx. 5 V | While clearance light illuminates | ||
| Illumination SW (Vi2) | D22 ββ Chassis ground | 0.5 - 4.8 V | |||
| Illumination SW (Vi3) | D28 ββ Chassis ground | Less than 1.5 V | Always | ||
| Bright SW | C21 ββ Chassis ground | 8 V or more β less than 1.5 V | Switch at ON position | ||
| Reverse SW (MT) | B12 ββ Chassis ground | Less than 1.5 V β 8 V or more | Reverse SW ON | ||
| Impact sensor | A11 ββ Chassis ground | 8 V or more | Apply an impact | ||
| Hi-speed CAN communication circuit 1 (Hi) | B20 | Serial communication | Except for sleep status(1) | ||
| Hi-speed CAN communication circuit 1 (Lo) | B28 | ||||
| Hi-speed CAN communication circuit 2 (Hi) | C27 | Serial communication | Except for sleep status(1) | ||
| Hi-speed CAN communication circuit 2 (Lo) | C35 | ||||
| X mode switch | B14 ββ Chassis ground | 8 V or more β less than 1.5 V | X mode switch ON | ||
| Immobilizer antenna (B) | B22 | Serial communication | Communication with ignition in key progress | ||
| Immobilizer antenna (A) | B10 | ||||
| Immobilizer antenna amplifier GND | B30 ββ Chassis ground | Less than 1.5 V | Always | ||
| Immobilizer antenna amplifier power supply | B2 ββ B30 | 4.5 - 5.5 V | Always | ||
| Security UART | A21 | Serial communication | Always | ||
| Front wiper return | A2 ββ Chassis ground | 8 V | When front wiper is operated | ||
| Rear washer switch | A30 ββ Chassis ground | 8 V or more β less than 1.5 V | When rear washer switch is ON | ||
| Door UNLOCK (driver's seat) output | D4 ββ Chassis ground | Less than 0.5 V β 8 V or more | When driver's side door unlock is output | ||
| Door UNLOCK (passenger's seat) output | D6 ββ Chassis ground | Less than 0.5 V β 8 V or more | When passenger's side door unlock is output (with push button start) | ||
| Keyless entry communication line | D11 | Serial communication | When door lock/unlock is operated with the keyless transmitter, or when TPMS is operated | ||
| Rear defogger switch | C18 ββ Chassis ground | Less than 1.5 V β 8 V or more | When the rear defogger switch is ON | ||
| Parking brake switch | C32 ββ Chassis ground | 8 V or more β less than 1.5 V | When parking brake is ON | ||
| Shift lock solenoid | B5 ββ Chassis ground | Less than 1.5 V β 8 V or more | When shift lock is operating (AT models) | ||
| Key actuator | B4 ββ Chassis ground | Less than 1.5 V β 8 V or more | LOCK status ON (AT models) | ||
| Rear wiper ON output | A7 ββ Chassis ground | Less than 0.5 V β 8 V or more | Rear wiper operation in progress | ||
| Rear wiper return | A6 ββ Chassis ground | Less than 0.5 V β 8 V or more | Rear wiper operation in progress | ||
| Door LOCK output | D2 ββ Chassis ground | Less than 0.5 V β 8 V or more | When LOCK signal is output | ||
| Door UNLOCK output | D3 ββ Chassis ground | Less than 0.5 V β 8 V or more | When UNLOCK signal is output | ||
| Rear gate/trunk UNLOCK output | D7 ββ Chassis ground | Less than 0.5 V β 8 V or more | When UNLOCK signal is output | ||
| Lighting relay power supply | A3 ββ Chassis ground | 10 - 13 V | ACC or key-in SW ON | ||
| B19 ββ Chassis ground | 10 - 13 V | ACC or key-in SW ON | |||
| Lighting relay Hi output | A17 ββ Chassis ground | 8 V or more β less than 1.0 V | Dimmer SW at Hi position | ||
| Lighting relay Lo output | B35 ββ Chassis ground | 8 V or more β less than 1.0 V | Lighting II SW at ON position | ||
| Lighting Lo relay output 2 | A27 ββ Chassis ground | 8 V or more β less than 1.0 V | Lighting II SW at ON position | ||
| Lighting relay I output | A16 ββ Chassis ground | 8 V or more β less than 1.0 V | Lighting I SW at ON position | ||
| Front fog light output | A15 ββ Chassis ground | 8 V or more β less than 1.0 V | Front fog light SW at ON position | ||
| DRL cancel output | D10 ββ Chassis ground | 8 V or more β less than 1.0 V | Headlight switch ON or Hi beam ON, passing switch ON | ||
| Illumination output | B8 | Pulse output | Illumination ON | ||
| C16 | Pulse output | Illumination ON | |||
| Key ring illumination | A25 | Pulse output | Illumination ON | ||
| Room light output | C4 | Pulse output | Room light ON (doors interlocked) | ||
| Map light output | D8 | Pulse output | Map light ON (keyless answer-back, etc.) | ||
| Luggage/trunk light output | C3 | Pulse output | Luggage/trunk at open state | ||
| Rear defogger relay output | A26 ββ Chassis ground | 8 V or more β less than 1.0 V | Rear defogger SW ON | ||
| Wiper deicer relay output | D9 ββ Chassis ground | 8 V or more β less than 1.0 V | Wiper deicer SW ON | ||
| Turn/hazard output | D18 ββ Chassis ground | 8 V or more β less than 1.0 V | When answer-back is output | ||
| Security horn output | A24 ββ Chassis ground | 8 V or more β less than 1.0 V | When security is operating | ||
| Security light | D26 | Pulse control | When security light is illuminating | ||
| Answer-back buzzer output | A20 ββ Chassis ground | 8 V or more β less than 1.0 V | When answer-back operates | ||
| Immobilizer communication | A31 | Serial communication | Β | ||
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RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.