Safety Warning
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.
2017 Subaru Outback 2.5iFACTORY OEM SERVICE PROCEDURE
Keyless Access Control Module: Notes
| Terminal No. | Content | Measuring condition | Standard | ||
|---|---|---|---|---|---|
| (i75) No. 1 ββ Chassis ground | Ground | Always (1) | Less than 1 Ξ© | ||
| (i75) No. 2 ββ 1 | Immobilizer signal reception (ignition switch) | Wait for 30 seconds or more after the door was opened or closed with IG OFF and the brake pedal (except for MT model) or clutch pedal (MT model) released. | 1 V or less | ||
| Turn the ignition switch to OFF and with the access key near the push button ignition switch, press the push button ignition switch. (with the access key battery removed) | Waveform 1 | ||||
| (i75) No. 3 | - | - | - | ||
| (i75) No. 4 ββ 1 | Start switch input 1 | Push button ignition switch pressed β released(1) | Less than 1 Ξ© β 10 kΞ© or more | ||
| (i75) No. 5 ββ 1 | Indicator output (orange) | With ACC ON or IG ON, brake pedal (AT model) or clutch pedal (MT model) not depressed | 9.5 V or more | ||
| (i75) No. 6 ββ 1 | Start switch character illumination | When illumination of start switch goes off, the headlight is OFF β ON, after setting the illumination control to MAX | Less than 2 V β 9.5 V or more | ||
| (i75) No. 7 ββ Chassis ground | Engine speed | While engine idling | Waveform 2 | ||
| (i75) No. 8 ββ Chassis ground (except for MT model) | Shift P position | Except for shift positions P β Shift position P | 40 kΞ© or more β 200 Ξ© or less | ||
| (i75) No. 9 ββ Chassis ground | Steering lock power supply | Always (1) | 10 kΞ© or more | ||
| (i75) No. 10 | - | - | - | ||
| (i75) No. 11 ββ Chassis ground | IGN2 relay drive | Always (20Β°C) (1) | 74.15 - 460.88 Ξ© | ||
| (i75) No. 12 ββ Chassis ground | IGN1 relay drive | Always (20Β°C) (1) | 50.87 - 72.17 Ξ© | ||
| (i75) No. 13 ββ Chassis ground | Immobilizer amplifier ground | Always (1) | Less than 1 Ξ© | ||
| (i75) No. 14 ββ 1 | Immobilizer signal transmission (ignition switch) | Wait for 30 seconds or more after the door was opened or closed with IG OFF and the brake pedal (except for MT model) or clutch pedal (MT model) released. | 1 V or less | ||
| Turn the ignition switch to OFF and with the access key near the push button ignition switch, press the push button ignition switch. (with the access key battery removed) | Waveform 3 | ||||
| (i75) No. 15 ββ 1 | Immobilizer amplifier power supply | Wait for 30 seconds or more after the door was opened or closed with IG OFF and the brake pedal (except for MT model) or clutch pedal (MT model) released. | 1 V or less | ||
| Within 30 seconds after the push button ignition switch is pressed with IG OFF and access key not in the passenger room | Waveform 4 | ||||
| (i75) No. 16 | - | - | - | ||
| (i75) No. 17 ββ 1 | Start switch input 2 | Push button ignition switch pressed β released(1) | Less than 1 Ξ© β 10 kΞ© or more | ||
| (i75) No. 18 ββ 1 | Indicator output (green) | Depress the brake pedal (except for MT models) or clutch pedal (MT models) with the access key in the passenger room. | 9.5 V or more | ||
| (i75) No. 19 | - | - | - | ||
| (i75) No. 20 ββ Chassis ground (MT model) | Clutch switch input | Clutch pedal depressed β Released | 9.5 V or more β 1 V or less | ||
| (i75) No. 21 ββ 1 | Steering lock position input | With ignition switch OFF and shift position P, and with push button ignition switch pressed, Steering lock β Steering unlock | 9.5 V or more β 1.2 V or less | ||
| (i75) No. 22 | - | Β | Β | ||
| (i75) No. 23 ββ Chassis ground | ACC relay drive | Always (20Β°C) (1) | 152.61 - 216.5 Ξ© | ||
| (i75) No. 24 ββ 1 | +B power supply 1 (main) | Always (1) | 9.5 - 16 V | ||
| (i241) No. 1 ββ 21 | Front interior antenna - | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 2 ββ 21 | Front interior antenna + | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 3 ββ 21 | Passenger side external antenna - | Power OFF, all doors closed, all doors locked by lock operation with wireless remote control, access key not in passenger room | No pulse output β Pulse output detected | ||
| (i241) No. 4 ββ 21 | Passenger side external antenna + | Power OFF, all doors closed, all doors locked by lock operation with wireless remote control, access key not in passenger room | No pulse output β Pulse output detected | ||
| (i241) No. 5 ββ 21 | Driver side external antenna + | Power OFF, all doors closed, all doors locked by lock operation with wireless remote control, access key not in passenger room | No pulse output β Pulse output detected | ||
| (i241) No. 6 ββ 21 | Driver side external antenna - | Power OFF, all doors closed, all doors locked by lock operation with wireless remote control, access key not in passenger room | No pulse output β Pulse output detected | ||
| (i241) No. 7 ββ 21 | Passenger's sensor drive power supply | Power OFF β IG ON | 9.5 V or more β less than 2 V | ||
| (i241) No. 8 | - | - | - | ||
| (i241) No. 9 ββ 21 | Driver's sensor drive power supply | Power OFF β IG ON | 9.5 V or more β less than 2 V | ||
| (i241) No. 10 ββ Chassis ground | CAN communication (Hi) | ACC ON or IGN ON or power OFF, and open/close the door | Pulse generation | ||
| (i241) No. 11 ββ Chassis ground | CAN communication (Lo) | ACC ON or IGN ON or power OFF, and open/close the door | Pulse generation | ||
| (i241) No. 12 | - | - | - | ||
| (i241) No. 13 | LIN communication | ACC ON or IGN ON or power OFF, and open/close the door | Pulse generation | ||
| (i241) No. 14 | - | - | - | ||
| (i241) No. 15 ββ 21 | Rear exterior antenna - | Power OFF, all doors closed, all doors locked, trunk or rear gate opener button OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 16 ββ 21 | Rear exterior antenna + | Power OFF, all doors closed, all doors locked, trunk or rear gate opener button OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 17 ββ 21 | Rear interior antenna - | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 18 ββ 21 | Rear interior antenna + | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 19 ββ 21 | Center interior antenna - | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 20 ββ 21 | Center interior antenna + | All doors closed, power OFF, access key not in passenger room, touch sensor (lock) OFF β ON | No pulse output β Pulse output detected | ||
| (i241) No. 21 ββ Chassis ground | Ground | Always (1) | Less than 1 Ξ© | ||
| (i241) No. 22 | - | - | - | ||
| (i241) No. 23 ββ Chassis ground | ID code box presence judgment terminal | Always (1) | With ID code box Less than 1 Ξ© | ||
| Β | Β | Β | Without ID code box 1 MΞ© or more | ||
| (i241) No. 24 ββ 21 | Request switch input | Power OFF, all doors locked, trunk or rear gate lock button OFF β ON | 9.5 V or more β less than 2 V | ||
| (i241) No. 25 ββ 21 | Passenger's lock sensor signal | Power OFF, all doors closed, all doors locked, access key carried, passenger's seat touch sensor (lock) OFF β ON | 9.5 V or more β less than 2 V (β 9.5 V or more) | ||
| (i241) No. 26 ββ 21 | Driver's lock sensor signal | Power OFF, all doors closed, all doors locked, access key carried, driver's seat touch sensor (lock) OFF β ON | 9.5 V or more β less than 2 V (β 9.5 V or more) | ||
| (i241) No. 27 | - | - | - | ||
| (i241) No. 28 ββ 21 | Passenger's unlock sensor signal | Power OFF, all doors closed, all doors locked, access key carried, passenger's seat touch sensor (unlock) OFF β ON | 9.5 V or more β less than 2 V (β 9.5 V or more) | ||
| (i241) No. 29 ββ 21 | Driver's unlock sensor signal | Power OFF, all doors closed, all doors locked, access key carried, driver's seat touch sensor (unlock) OFF β ON | 9.5 V or more β less than 2 V (β 9.5 V or more) | ||
| (i241) No. 30 | - | - | - | ||
| (i241) No. 31 ββ Chassis ground (except for MT model) | Stop light switch input | Brake pedal depressed β released | 9.5 V or more β 1 V or less | ||
| (i241) No. 32 ββ Chassis ground | Vehicle speed signal input | Always | 30 kΞ© or more | ||
| (i241) No. 33 | - | - | - | ||
| (i241) No. 34 ββ 21 (except for MT model) | Neutral switch input | Shift position N β any shift position other than P or N | Less than 2 V β 9.5 V or more | ||
| (i241) No. 35 ββ 21 | Starter drive request | Shift lever is in position P or position N and access key is in passenger compartment. While depressing the brake pedal (AT model) or clutch pedal (MT model), press the push button ignition switch (engine starts). | Less than 2 V β 9.5 V or more | ||
| (i241) No. 36 ββ 21 | ACC cutoff input | When brake pedal (AT model) or clutch pedal (MT model) depressed, push button ignition switch pressed (while cranking) β Except when cranking | Less than 2 V β 9.5 V or more | ||
| (i241) No. 37 ββ 21 | Immobilizer collation | Ignition switch ON | 7 V or more β pulse generates temporarily | ||
| (i241) No. 38 | - | - | - | ||
| (i241) No. 39 | - | - | - | ||
| (i241) No. 40 ββ Chassis ground | +B power supply 2 (DCDC backup) | Always (1) | 9.5 - 16 V | ||
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NOTE:
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Factory Service Tools
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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.
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